Journal of Pathology and Translational Medicine

Original Articles

Histopathologic classification and immunohistochemical features of papillary renal neoplasm with potential therapeutic targets: Jeong Hwan Park, Su-Jin Shin, Hyun-Jung Kim, Sohee Oh, Yong Mee Cho; J Pathol Transl Med. 2024;58(6):321-330. Published online September 12, 2024; DOI: https://doi.org/10.4132/jptm.2024.07.31

1,738 View
327 Download
1 Crossref

Background
Papillary renal cell carcinoma (pRCC) is the second most common histological subtype of renal cell carcinoma and is considered a morphologically and molecularly heterogeneous tumor. Accurate classification and assessment of the immunohistochemical features of possible therapeutic targets are needed for precise patient care. We aimed to evaluate immunohistochemical features and possible therapeutic targets of papillary renal neoplasms
Methods
We collected 140 papillary renal neoplasms from three different hospitals and conducted immunohistochemical studies on tissue microarray slides. We performed succinate dehydrogenase B, fumarate hydratase, and transcription factor E3 immunohistochemical studies for differential diagnosis and re-classified five cases (3.6%) of papillary renal neoplasms. In addition, we conducted c-MET, p16, c-Myc, Ki-67, p53, and stimulator of interferon genes (STING) immunohistochemical studies to evaluate their pathogenesis and value for therapeutic targets.
Results
We found that c-MET expression was more common in pRCC (classic) (p = .021) among papillary renal neoplasms and Ki-67 proliferation index was higher in pRCC (not otherwise specified, NOS) compared to that of pRCC (classic) and papillary neoplasm with reverse polarity (marginal significance, p = .080). Small subsets of cases with p16 block positivity (4.5%) (pRCC [NOS] only) and c-Myc expression (7.1%) (pRCC [classic] only) were found. Also, there were some cases showing STING expression and those cases were associated with increased Ki-67 proliferation index (marginal significance, p = .063).
Conclusions
Our findings suggested that there are subsets of pRCC with c-MET, p16, c-MYC, and STING expression and those cases could be potential candidates for targeted therapy.

Citations

Citations to this article as recorded by

Tissue-Based Biomarkers Important for Prognostication and Management of Genitourinary Tumors, Including Surrogate Markers of Genomic Alterations
Leonie Beauchamp, Shreeya Indulkar, Eric Erak, Mohammad Salimian, Andres Matoso
Surgical Pathology Clinics.2025; 18(1): 175. CrossRef

Loss of aquaporin-1 expression is associated with worse clinical outcomes in clear cell renal cell carcinoma: an immunohistochemical study: Seokhyeon Lee, Bohyun Kim, Minsun Jung, Kyung Chul Moon; J Pathol Transl Med. 2023;57(4):232-237. Published online July 11, 2023; DOI: https://doi.org/10.4132/jptm.2023.06.17

2,698 View
150 Download
1 Web of Science
1 Crossref

Abstract PDF

Background
Aquaporin (AQP) expression has been investigated in various malignant neoplasms, and the overexpression of AQP is related to poor prognosis in some malignancies. However, the expression of AQP protein in clear cell renal cell carcinoma (ccRCC) has not been extensively investigated by immunohistochemistry with large sample size.
Methods
We evaluated the AQP expression in 827 ccRCC with immunohistochemical staining in tissue microarray blocks and classified the cases into two categories, high and low expression.
Results
High expression of aquaporin-1 (AQP1) was found in 320 cases (38.7%), but aquaporin-3 was not expressed in ccRCC. High AQP1 expression was significantly related to younger age, low TNM stage, low World Health Organization/International Society of Urologic Pathology nuclear grade, and absence of distant metastasis. Furthermore, high AQP1 expression was also significantly associated with longer overall survival (OS; p<.001) and progression-specific survival (PFS; p<.001) and was an independent predictor of OS and PFS in ccRCC.
Conclusions
Our study revealed the prognostic significance of AQP1 protein expression in ccRCC. These findings could be applied to predict the prognosis of ccRCC.

Citations

Citations to this article as recorded by

Serum Exosomal MiR-874 as a Potential Biomarker for Nonsmall Cell Lung Cancer Diagnosis and Prognosis
Amal F. Gharib, Saad S. Al-Shehri, Abdulraheem Almalki, Ayman Alhazmi, Mamdouh Allahyani, Ahmed Alghamdi, Amani A. Alrehaili, Maha M. Bakhuraysah, Althobaiti Naif Saad M., Weal H. Elsawy
Indian Journal of Medical and Paediatric Oncology.2024;[Epub] CrossRef

Implication of PHF2 Expression in Clear Cell Renal Cell Carcinoma: Cheol Lee, Bohyun Kim, Boram Song, Kyung Chul Moon; J Pathol Transl Med. 2017;51(4):359-364. Published online June 13, 2017; DOI: https://doi.org/10.4132/jptm.2017.03.16

7,916 View
166 Download
10 Web of Science
11 Crossref

Abstract PDF

Background
Clear cell renal cell carcinoma (CCRCC) is presumed to be associated with adipogenic differentiation. Histone modification is known to be important for adipogenesis, and the function of histone demethylase plant homeodomain finger 2 (PHF2) has been noted. In addition, PHF2 may act as a tumor suppressor via epigenetic regulation of p53 and is reported to be reduced in colon cancer and stomach cancer tissues. In this study, we examined PHF2 expression in CCRCC specimens by immunohistochemistry.
Methods
We studied 254 CCRCCs and 56 non-neoplastic renal tissues from patients who underwent radical or partial nephrectomy between 2000 and 2003 at the Seoul National University Hospital. Tissue microarray blocks were prepared, and immunohistochemical staining for PHF2 was performed.
Results
Among 254 CCRCC cases, 150 cases (59.1%) showed high expression and 104 cases (40.1%) showed low expression. High expression of PHF2 was significantly correlated with a low Fuhrman nuclear grade (p < .001), smaller tumor size (p < .001), low overall stage (p = .003), longer cancer-specific survival (p = .002), and progression-free survival (p < .001) of the patients. However, it was not an independent prognostic factor in multivariate analysis adjusted for Fuhrman nuclear grade and overall stage.
Conclusions
Our study showed that low expression of PHF2 is associated with aggressiveness and poor prognosis of CCRCC.

Citations

Citations to this article as recorded by

Phosphoproteomics identifies determinants of PAK inhibitor sensitivity in leukaemia cells
Pedro Casado, Santiago Marfa, Marym M. Hadi, Henry Gerdes, Sandra M. Martin-Guerrero, Farideh Miraki-Moud, Vinothini Rajeeve, Pedro R. Cutillas
Cell Communication and Signaling.2025;[Epub] CrossRef
The role of histone methylation in renal cell cancer: an update
Yanguang Hou, Yan Yuan, Yanze Li, Lei Wang, Juncheng Hu, Xiuheng Liu
Molecular Biology Reports.2023; 50(3): 2735. CrossRef
Phosphorylation of PHF2 by AMPK releases the repressive H3K9me2 and inhibits cancer metastasis
Ying Dong, Hao Hu, Xuan Zhang, Yunkai Zhang, Xin Sun, Hanlin Wang, Weijuan Kan, Min-jia Tan, Hong Shi, Yi Zang, Jia Li
Signal Transduction and Targeted Therapy.2023;[Epub] CrossRef
HIF-1α-mediated augmentation of miRNA-18b-5p facilitates proliferation and metastasis in osteosarcoma through attenuation PHF2
Peng Luo, Yan-dong Zhang, Feng He, Chang-jun Tong, Kai Liu, He Liu, Shi-zhuang Zhu, Jian-zhou Luo, Bing Yuan
Scientific Reports.2022;[Epub] CrossRef
Integration of meta-analysis and supervised machine learning for pattern recognition in breast cancer using epigenetic data
Reza Panahi, Esmaeil Ebrahimie, Ali Niazi, Alireza Afsharifar
Informatics in Medicine Unlocked.2021; 24: 100629. CrossRef
PHF2 regulates homology-directed DNA repair by controlling the resection of DNA double strand breaks
Ignacio Alonso-de Vega, Maria Cristina Paz-Cabrera, Magdalena B Rother, Wouter W Wiegant, Cintia Checa-Rodríguez, Juan Ramón Hernández-Fernaud, Pablo Huertas, Raimundo Freire, Haico van Attikum, Veronique A J Smits
Nucleic Acids Research.2020; 48(9): 4915. CrossRef
Emerging of lysine demethylases (KDMs): From pathophysiological insights to novel therapeutic opportunities
Sarder Arifuzzaman, Mst Reshma Khatun, Rabeya Khatun
Biomedicine & Pharmacotherapy.2020; 129: 110392. CrossRef
Biology and targeting of the Jumonji-domain histone demethylase family in childhood neoplasia: a preclinical overview
Tyler S. McCann, Lays M. Sobral, Chelsea Self, Joseph Hsieh, Marybeth Sechler, Paul Jedlicka
Expert Opinion on Therapeutic Targets.2019; 23(4): 267. CrossRef
MiR-221 Promotes Hepatocellular Carcinoma Cells Migration via Targeting PHF2
Yi Fu, Mingyan Liu, Fengxia Li, Li Qian, Ping Zhang, Fengwei Lv, Wenting Cheng, Ruixing Hou
BioMed Research International.2019; 2019: 1. CrossRef
PHF2 histone demethylase prevents DNA damage and genome instability by controlling cell cycle progression of neural progenitors
Stella Pappa, Natalia Padilla, Simona Iacobucci, Marta Vicioso, Elena Álvarez de la Campa, Claudia Navarro, Elia Marcos, Xavier de la Cruz, Marian A. Martínez-Balbás
Proceedings of the National Academy of Sciences.2019; 116(39): 19464. CrossRef
Plant homeodomain finger protein 2 as a novel IKAROS target in acute lymphoblastic leukemia
Zheng Ge, Yan Gu, Qi Han, Justin Sloane, Qinyu Ge, Goufeng Gao, Jinlong Ma, Huihui Song, Jiaojiao Hu, Baoan Chen, Sinisa Dovat, Chunhua Song
Epigenomics.2018; 10(1): 59. CrossRef

Clear Cell Papillary Renal Cell Carcinoma: A Report of 15 Cases Including Three Cases of Concurrent Other-Type Renal Cell Carcinomas: Jeong Hwan Park, Cheol Lee, Ja Hee Suh, Kyung Chul Moon; Korean J Pathol. 2012;46(6):541-547. Published online December 26, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.6.541

8,263 View
61 Download
23 Crossref

Abstract PDF

Background

Clear cell papillary renal cell carcinoma (CCPRCC) is a recently established subtype of renal epithelial tumor. The aim of this study was to identify the diagnostic criteria of CCPRCC with an emphasis on immunohistochemical studies, and to report three cases with concurrent other-type renal cell carcinoma (RCC).

Methods

A total of 515 RCC patients that consecutively underwent surgical resection at Seoul National University Hospital from 1 January 2010 to 31 December 2011 were screened. Each case was reviewed based on the histologic features and was evaluated immunohistochemically.

Results

A total of 15 CCPRCCs were identified, which composed 2.9% of the total RCCs. The mean age was 52 years, and the average tumor size was 1.65 cm. All 15 cases showed low nuclear grade, no lymph node metastasis and no distant metastasis. The CCPRCCs showed variable architectural patterns including cystic, trabecular, papillary, and acinar. All of the cases showed moderate to intense immunoreactivity for cytokeratin 7 (CK7). CD10 was negative or showed focal weak positivity. Three cases had concurrent other-type RCC, including a clear cell RCC and an acquired cystic disease-associated RCC.

Conclusions

The strong CK7 and negative or focal weak CD10 expression will be useful for the diagnosis of CCPRCC.

Citations

Citations to this article as recorded by

Vascular, adipose tissue, and/or calyceal invasion in clear cell tubulopapillary renal cell tumour: potentially problematic diagnostic scenarios
Ankur R Sangoi, Harrison Tsai, Lara Harik, Jonathan Mahlow, Maria Tretiakova, Sean R Williamson, Michelle S Hirsch
Histopathology.2024; 84(7): 1167. CrossRef
Clinical features and Surgical Outcome of Clear Cell Papillary Renal Cell Tumor: result from a prospective cohort
Si Hyun Kim, Jang Hee Han, Seung-hwan Jeong, Hyeong Dong Yuk, Ja Hyeon Ku, Cheol Kwak, Hyeon Hoe Kim, Kyung Chul Moon, Chang Wook Jeong
BMC Urology.2023;[Epub] CrossRef
Coexistence of multiple clear cell papillary renal cell carcinoma with renal oncocytoma: a case report
Amine Hermi, Ahmed Saadi, Seif Mokadem, Ahlem Blel, Marouene Chakroun, Mohamed Riadh Ben Slama
Annals of Medicine & Surgery.2023; 85(5): 2017. CrossRef
Renal Cell Carcinoma in End-Stage Renal Disease: A Review and Update
Ziad M. El-Zaatari, Luan D. Truong
Biomedicines.2022; 10(3): 657. CrossRef
The Clinicopathologic and Molecular Landscape of Clear Cell Papillary Renal Cell Carcinoma: Implications in Diagnosis and Management
Stanley Weng, Renzo G. DiNatale, Andrew Silagy, Roy Mano, Kyrollis Attalla, Mahyar Kashani, Kate Weiss, Nicole E. Benfante, Andrew G. Winer, Jonathan A. Coleman, Victor E. Reuter, Paul Russo, Ed Reznik, Satish K. Tickoo, A. Ari Hakimi
European Urology.2021; 79(4): 468. CrossRef
Clear cell papillary renal cell carcinoma: Characteristics and survival outcomes from a large single institutional series
James E. Steward, Sean Q. Kern, Liang Cheng, Ronald S. Boris, Yan Tong, Clint D. Bahler, Timothy A. Masterson, K. Clint Cary, Hristos Kaimakliotis, Thomas Gardner, Chandru P. Sundaram
Urologic Oncology: Seminars and Original Investigations.2021; 39(6): 370.e21. CrossRef
Clear cell papillary renal cell carcinoma: an update after 15 years
Sean R. Williamson
Pathology.2021; 53(1): 109. CrossRef
Clear Cell Papillary Renal Cell Carcinoma
Jianping Zhao, Eduardo Eyzaguirre
Archives of Pathology & Laboratory Medicine.2019; 143(9): 1154. CrossRef
Clear cell papillary renal cell carcinoma – An indolent subtype of renal tumor
Wei-Jen Chen, Chin-Chen Pan, Shu-Huei Shen, Hsiao-Jen Chung, Chih-Chieh Lin, Alex T.L. Lin, Yen-Hwa Chang
Journal of the Chinese Medical Association.2018; 81(10): 878. CrossRef
Clear cell papillary renal cell carcinoma: A case report and review of the literature
Sung Han Kim, Whi-An Kwon, Jae Young Joung, Ho Kyung Seo, Kang Hyun Lee, Jinsoo Chung
World Journal of Nephrology.2018; 7(8): 155. CrossRef
Clinical features and survival analysis of clear cell papillary renal cell carcinoma: A 10‑year retrospective study from two institutions
Yiqiu Wang, Ying Ding, Jian Wang, Min Gu, Zengjun Wang, Chao Qin, Conghui Han, Hongxia Li, Xia Liu, Pengfei Wu, Guangchao Li
Oncology Letters.2018;[Epub] CrossRef
A contemporary series of renal masses with emphasis on recently recognized entities and tumors of low malignant potential: A report based on 624 consecutive tumors from a single tertiary center
Maria Rosaria Raspollini, Ilaria Montagnani, Rodolfo Montironi, Liang Cheng, Guido Martignoni, Andrea Minervini, Sergio Serni, Giulio Nicita, Marco Carini, Antonio Lopez-Beltran
Pathology - Research and Practice.2017; 213(7): 804. CrossRef
Renal Neoplasms With Overlapping Features of Clear Cell Renal Cell Carcinoma and Clear Cell Papillary Renal Cell Carcinoma
Hari P. Dhakal, Jesse K. McKenney, Li Yan Khor, Jordan P. Reynolds, Cristina Magi-Galluzzi, Christopher G. Przybycin
American Journal of Surgical Pathology.2016; 40(2): 141. CrossRef
New and emerging renal tumour entities
Naoto Kuroda, Ondřej Hess, Ming Zhou
Diagnostic Histopathology.2016; 22(2): 47. CrossRef
Immunohistochemical Panel for Differentiating Renal Cell Carcinoma with Clear and Papillary Features
Hanan AlSaeid Alshenawy
Pathology & Oncology Research.2015; 21(4): 893. CrossRef
Immunohistochemical panel for differentiating renal cell carcinoma with clear and papillary features
Hanan AlSaeid Alshenawy
Journal of Microscopy and Ultrastructure.2015; 3(2): 68. CrossRef
Clear Cell-Papillary Renal Cell Carcinoma of the Kidney Not Associated With End-stage Renal Disease
Manju Aron, Elena Chang, Loren Herrera, Ondrej Hes, Michelle S. Hirsch, Eva Comperat, Philippe Camparo, Priya Rao, Maria Picken, Michal Michal, Rodolfo Montironi, Pheroze Tamboli, Federico Monzon, Mahul B. Amin
American Journal of Surgical Pathology.2015; 39(7): 873. CrossRef
Papillary or pseudopapillary tumors of the kidney
Fang-Ming Deng, Max X. Kong, Ming Zhou
Seminars in Diagnostic Pathology.2015; 32(2): 124. CrossRef
Do Clear Cell Papillary Renal Cell Carcinomas Have Malignant Potential?
Mairo L. Diolombi, Liang Cheng, Pedram Argani, Jonathan I. Epstein
American Journal of Surgical Pathology.2015; 39(12): 1621. CrossRef
Targeted next‐generation sequencing and non‐coding RNA expression analysis of clear cell papillary renal cell carcinoma suggests distinct pathological mechanisms from other renal tumour subtypes
Charles H Lawrie, Erika Larrea, Gorka Larrinaga, Ibai Goicoechea, María Arestin, Marta Fernandez‐Mercado, Ondrej Hes, Francisco Cáceres, Lorea Manterola, José I López
The Journal of Pathology.2014; 232(1): 32. CrossRef
Clear cell papillary renal cell carcinoma is the fourth most common histologic type of renal cell carcinoma in 290 consecutive nephrectomies for renal cell carcinoma
Haijun Zhou, Shaojiang Zheng, Luan D. Truong, Jae Y. Ro, Alberto G. Ayala, Steven S. Shen
Human Pathology.2014; 45(1): 59. CrossRef
Clear cell papillary renal cell carcinoma: Incidence, morphological features, immunohistochemical profile, and biologic behavior: A single institution study
Borislav A. Alexiev, Cinthia B. Drachenberg
Pathology - Research and Practice.2014; 210(4): 234. CrossRef
MRI Phenotype in Renal Cancer
Naomi Campbell, Andrew B. Rosenkrantz, Ivan Pedrosa
Topics in Magnetic Resonance Imaging.2014; 23(2): 95. CrossRef

The EGFR Protein Expression and the Gene Copy Number Changes in Renal Cell Carcinomas.: Sangho Lee, Jungsuk An, Aeree Kim, Young Sik Kim, Insun Kim; Korean J Pathol. 2009;43(5):413-419.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.5.413

3,753 View
20 Download
1 Crossref

Abstract PDF

BACKGROUND
The epidermal growth factor receptor (EGFR) is known to be involved in many tumor promoting activities. EGFR inhibition has been tried as a therapeutic modality in many human malignancies.
METHODS
The expression of EGFR protein and the gene copy number changes were studied in 135 clear cell carcinomas and 16 papillary renal cell carcinomas (RCCs), and these tumors were diagnosed between 1995 and 1997.
RESULTS
An EGFR protein expression (2+ and 3+) was found in 54.1% of the clear cell RCCs and in 43.8% of the papillary RCCs. In the clear cell RCCs, its expression was associated with male gender, the tumor size (> or =4 cm) and high T stages (T2 and T3), with statistical significance. Trisomy and polysomy of the EGFR gene were found in 27 (25.7%) and 40 (38.1%) of 105 clear cell RCCs, respectively. Trisomy and polysomy were correlated with an EGFR protein expression and a high clinical T stage, with statistical significance. Among 15 papillary RCCs, 13 tumors showed trisomy (86.7%) and one showed polysomy (6.7%). Amplification was not found in both the clear cell and papillary type RCCs.
CONCLUSIONS
A considerable numbers of RCCs showed an overexpression of EGFR protein and increased EGFR gene copy numbers, yet the clinical significance of conducting a FISH study in RCC patients seems to be limited.

Citations

Citations to this article as recorded by

EGFR protein overexpression correlates with chromosome 7 polysomy and poor prognostic parameters in clear cell renal cell carcinoma
Gordana Đorđević, Koviljka Matušan Ilijaš, Ita Hadžisejdić, Anton Maričić, Blaženka Grahovac, Nives Jonjić
Journal of Biomedical Science.2012;[Epub] CrossRef

The Relationship between Prognostic Factors and the Expression Pattern of Fascin and E-cadherin in Renal Cell Carcinoma.: Sung Hee Kang, Seoung Wan Chae, Kyoung Bun Lee, Dong Hoon Kim, Min Kyoung Kim, Jin Hee Sohn; Korean J Pathol. 2009;43(2):139-144.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.2.139

3,077 View
18 Download

Abstract PDF: BACKGROUND
Fascin is associated with motility in various transformed cells. Overexpression of fascin is known to aid in the progression of some cancers and is associated with a poor prognosis. E-cadherin is a major protein of epithelial cells and its expression is involved in the regulation of cell proliferation and differentiation. The aim of this study was to determine the expression pattern for fascin and E-cadherin and how it is related to the prognostic factors for renal cell carcinoma (RCC).
METHODS
The expression of fascin and E-cadherin was evaluated in 208 RCCs including 175 clear cell, 20 papillary, and 9 chromophobe types using tissue array analysis.
RESULTS
The expression of fascin increased as the tumor stage (p=0.00) and Fuhrman grade (p=0.00) increased. A high positive rate of expression for fascin was observed in cases with sarcomatoid changes (p=0.27). E-cadherin expression was seen in the distal tubules and collecting ducts of normal kidneys with a membranous pattern. The positive rate of expression for E-cadherin increased as the Fuhrman grade increased (1, 0%; 2, 23.2%; 3, 34.9%; and 4, 53.8%, p=0.00). An inverse correlation in RCCs was observed in the expression of fascin and E-cadherin (p=0.026, r=-0.158).
CONCLUSIONS
In patients with RCC, the increased expression of fascin and E-cadherin was positively correlated to poor prognostic factors such as a higher Fuhrman nuclear grade and advanced pTNM stage.

Case Report

A Case Report of Renal Cell Carcinoma in a Polycystic Kidney: A case report.: Kyoung Chan Choi, Joon Hyuk Choi, Won Hee Choi; Korean J Pathol. 1996;30(1):57-60.

1,760 View
18 Download

Abstract PDF: A forty-nine-year-old woman with polycystic disease had a right nephrectomy for what was preoperatively thought to be a polycystic disease, but at surgery turned out to be a tumor based on frozen section. Microscopic examination revealed papillary type, renal cell carcinoma with classical features of adult polycystic kidneys. Radiologic findings revealed multiple cysts in the liver. The clinical recognition of a carcinoma developing in polycystic kidneys is often difficult because of the presence of preexisting large renal masses and occasional hematuria. Renal cell carcinoma should be thought of when confronted with abdominal pain or back pain, severe hematuria, sudden dysuria or a new renal mass occurring in a patient with polycystic kidneys.

Original Articles

Correlation between Nuclear Grades and the Numbers of AgNORs and PCNA Labeling Indices in Renal Cell Carcinoma.: Hye Jin Lee, Young Im Han, Kang Suek Suh, Sun Kyung Lee; Korean J Pathol. 1996;30(2):132-139.

1,560 View
12 Download

Abstract PDF: The author examined the number of AgNORs and PCNA labeling indices by histochemical and immunohistochemical studies in 20 cases of renal cell carcinoma, composed of 5 cases according to the nuclear grades. The results obtained are summarized as follows; 1) Mean number of AgNORs according to the nuclear grades of renal cell carcinoma were 1.38+/-0.40 (mean+/-standard deviation) for Grade I, 2.53+/-0.33 for Grade II, 5.43+/-0.66 for Grade III, and 7.88+/-0.72 for Grade IV. The mean numbers of AgNORs according to the nuclear grades were significantly increased(p=0.0005). 2) PCNA labeling indices (positive nuclear ratio) according to the nuclear grades of renal cell carcinoma were 5.90+/-2.36 for Grade I, 19.30+/-6.71 for Grade II, 45.73+/-8.62 for Grade III, and 61.83+/-6.34 for Grade IV. Also, the PCNA labeling indices according to the nuclear grades were significantly increased(p=0.0008). 3) The mean numbers of AgNORs directly correlated with the PCNA labeling indices (r=0.9861, p<0.001). On the basis of the above results, it was considered that the numbers of AgNORs and PCNA labeling indices as markers of proliferative activity of tumor cells correlate well with the nuclear grades of renal cell carcinoma.

A Study on the Expression of p53 Oncogene Products, PCNA Index and DNA Ploidy in Renal Cell Carcinoma.: Jong Jae Jung, Ji Shin Lee, Chan Choi; Korean J Pathol. 1997;31(7):672-682.

1,671 View
19 Download

Abstract PDF: Mutant p53 is associated with the advanced stages of some human tumor but there is a wide variation in the reported incidence of p53 mutation in renal cell carcinoma and its prognostic significances. We designed this study to assess the expression of p53 in renal cell carcinomas and to compare with the established prognostic factors. Immunoreactivity for p53 protein and proliferating cell nuclear antigen (PCNA) were assessed in 44 cases of primary renal cell carcinoma, and flow cytometric analysis of DNA ploidy was perfon-ned in 37 of those cases. p53 protein was over-expressed in 16/44 (36.4%) renal cell carcinomas and 5 rumors had more than 10 immunoreactive tumor cells. The expression of p53 protein was positively related to nuclear grade (p=0.007) and PCNA index (p=0.002), but was independent of stage and DNA ploidy. In univariate survival analysis, stage (p<0.001), nuclear grade (p=0.017), DNA ploidy (p=0.045) and PCNA index (p<0.001) were significantly associated with patient survival. However, considering the stage, all of the last three factors had no prognostic influence. Cases showing strong positivity of p53 expression had worse prognosis than those with no or weak p53 expression, especially in early lesions (stage I,II) (p<0.001).

Case Report

Multilocular Cystic Renal Cell Carcinoma.: Myoung Jin Ju, Kee Tac Jang, Je Geun Chi; Korean J Pathol. 1997;31(11):1240-1243.

1,665 View
10 Download

Abstract: Multilocular cystic renal cell carcinoma is a distinct subtype of renal cell carcinoma with its pathological characteristics and good prognosis. Multilocular renal cysts and renal cell carcinoma with cystic change are important differential diagnoses. We report a case of multilocular cystic renal cell carcinoma in a 37-year-old woman who came to the hospital because of the right renal mass. The removed right kidney showed a 6x4 cm well defined cystic mass in the lower pole. On cut section there were multiple cavities in the mass, filled with serosanguineous fluid and focal yellowish solid area. Microscopically, these cysts were lined by a single layer of flat or cuboidal cells consisted of clear cytoplasm with small central nuclei. In some portions of the tumor, the clear neoplastic cells formed sheets within the septa or walls of the cysts.

Original Articles

Sarcomatoid Renal Cell Carcinoma; Special Reference to its Distinction from Carcinosarcoma.: Kee Taek Jang, Yeon Mee Kim, Je Geun Chi; Korean J Pathol. 1998;32(5):378-381.

1,579 View
10 Download

Abstract: Sarcomatoid renal cell carcinoma is an uncommon tumor that has to be distinguished from renal carcinosarcoma. We have described three cases of sarcomatoid renal cell carcinoma showing different clinical and light microscopic features. An ultrastructural study of the tumor cells from the sarcomatoid area revealed frequent desmosomal junction, confirming the epithelial nature of the neoplasm. All three cases showed an aggressive clinical course and tended to invade adjacent organs or tissues. We believe that an histological and immunohistochemical examination in conjunction with an electron microscopic examination are necessary to diagnose sarcomatoid renal cell carcinoma.

Loss of Heterozygosity at VHL, FHIT, and p16 Loci in Nonpapillary Renal Cell Carcinoma.: Won Sang Park, Seung Myung Dong, Yong Hyun Cho, Tae Gon Hwang, Su Young Kim, Min Sun Shin, Jae Ho Pi, Suk Hyung Lee, Nam Jin Yoo, Jung Young Lee; Korean J Pathol. 1999;33(1):8-14.

1,714 View
21 Download

Abstract PDF: The objectives of this study were to characterize the alterations of 3p and 9p in sporadic renal cell carcinomas (RCC) and to assess the relationship between the clinical stages or tumor size and the alteration of these chromosomes. Thirty eight archival, paraffin embedded tissue sections from 38 patients with RCC were analyzed for loss of heterozygosity (LOH) at 3p and 9p with 11 microsatellite markers. LOH was detected in 81.6% (31/38) and 37.8% (14/37) at 3p and 9p, respectively. The frequencies of LOH at VHL and FHIT locus were 75.6% and 72.2%, respectively. Twelve cases out of 38 showed LOH at both 9p21 and 3p. The loss of 3p in the samples tested was not related to clinical stages and tumor size, but that of 9p21 was significantly associated with advanced stage and larger tumor size. These results support that 3p deletion, including VHL and FHIT gene, play a critical role in the tumorigenesis of sporadic RCC, especially at early stage, and that 9p21 may contribute to the progression of sporadic RCC.

Case Report

Chromophobe Renal Cell Carcinoma.: Yeong Jin Choi, Tae Kon Hwang, Youn Soo Lee, Eun Jung Lee, Seok Jin Kang, Byung Kee Kim, Sang In Shim; Korean J Pathol. 1999;33(4):259-266.

1,859 View
26 Download

Abstract PDF: We report 13 chromophobe renal cell carcinomas (10.8%) observed among 120 renal cell carcinomas in adults. The average age was 53 (range: 34-72) years old, and 6 were males and 7 females. The mean tumor size was 10 (range: 5-17) cm, mean nuclear grade 2.4, and mean Robson's stage was 1.9. There were two distinct histologic variants; typical variant (n=9) and eosinophilic variant (n=4). Both of them showed typical light microscopic features and positive reaction with Hale's colloidal iron and carbonic anhydrase II, a marker protein of intercalated cells of renal collecting ducts. A strong positive immunoreactivity for epithelial membrane antigen was noted in the cytoplasm in 12 of 13 tumors. Numerous microvesicles, 180~440 nm in diameter, were identified ultrastructurally. DNA aneuploidy was found in 3 out of 10 cases. Neither local recurrence nor metastasis have been identified during the following period of 4~144 (mean 48) months.

Original Articles

Tumor Angiogenesis in Renal Cell Carcinoma.: Ji Shin Lee, Jong Jae Jung, Chang Soo Park; Korean J Pathol. 1999;33(11):1055-1060.

1,627 View
19 Download

Abstract PDF: Angiogenesis is essential for the growth of solid tumors. Microvessel counts, which represent a measure of tumor angiogenesis, have been correlated with the overall survival of patients with a variety of malignancies. However, the significance of angiogenesis in renal cell carcinoma remains controversial. To determine whether angiogenesis correlates with prognosis of patients with renal cell carcinoma, we counted the microvessels within the primary tumors and compared their numbers with patients' prognosis. Tumor specimens from 42 patients were investigated. Microvessels were stained with anti-CD34 and anti-factor VIII-related antigen monoclonal antibodies. Significant correlation between microvessel counts for two antibodies was observed (r=0.875, p<0.01), although microvessel counts for CD34 were approximately two times higher. Microvessel counts were higher in clear cell than in non-clear cell carcinoma (p<0.05). These results suggest that immunostaining with anti-CD34 antibody may provide a more sensitive and accurate measure of tumor angiogenesis. There was no correlation between microvessel counts and nuclear grade, or TNM stage. In univariate analyses, nuclear grade and TNM stage were significantly associated with patient survival (p<0.01). But further studies on tumor angiogenesis of renal cell carcinoma are needed before it can be adopted as a prognostic marker.

Correlation of Clinical Stage and Presumptive Prognostic Factors in Renal Cell Carcinoma.: Jin Ye Yoo, Hye Jae Cho; Korean J Pathol. 1999;33(11):1061-1066.

1,705 View
16 Download

Abstract PDF: Renal cell carcinoma is the most common primary cancer of the kidney. The tumor stage is a reliable prognostic marker in renal cell carcinoma which is significantly associated with patient survival. But assessment of other prognostic factors has produced varying and often conflicting results. We reevaluated the significance of varied prognostic parameters in 33 cases of renal cell carcinoma; clinical stage, cell type, histologic pattern, DNA ploidy, Ki-67 labeling index, and bcl-2 oncoprotein expression. We could not statistically prove that DNA ploidy and bcl-2 expression were related to any examined parameters. Cell type was not related to clinical stage nor nuclear grade but there was a significant correlation (p=0.002) between cell type and histologic pattern. Nuclear grade (p=0.007) and Ki-67 labeling index (p=0.036) were significantly related to clinical stage, suggesting their value as complementary prognostic markers for renal cell carcinoma.

First
Prev
Page of 3
Next
Last

Search