Pancreatic neuroendocrine microtumor (PNEMT) is a neuroendocrine tumor (NET) < 0.5 cm in diameter, and it is considered benign. We report a PNEMT with high-grade transformation (HGT). A man in his 60s with von Hippel-Lindau syndrome underwent surgical resection of a NET. A second sub-centimeter nodule with a nodule-in-nodule pattern was discovered. The 0.4 cm outer nodule contained clear columnar cells with round nuclei and indistinct nucleoli, while the 0.1 cm inner nodule had eosinophilic cells with an increased nuclear to cytoplasmic ratio, vesicular nuclei, and prominent nucleoli. Tumor cells in the outer and inner nodules were synaptophysin and chromogranin positive. Only the inner nodule was p53 positive, while the outer nodule was exclusively positive for carbonic anhydrase 9 and vimentin. The Ki-67 labeling indices for the outer and inner nodules were 2.1% (grade 1) and 44.3% (grade 3), respectively. This nodule was determined to be a PNEMT with HGT. Our findings suggest that a PNEMT may not always be benign and can undergo HGT.
Yi A. Liu, Phyu P. Aung, Yunyi Wang, Jing Ning, Priyadharsini Nagarajan, Jonathan L. Curry, Carlos A. Torres-Cabala, Doina Ivan, Victor G. Prieto, Qingqing Ding, Woo Cheal Cho
J Pathol Transl Med. 2024;58(2):72-80. Published online February 26, 2024
Background Although trichorhinophalangeal syndrome type 1 (TRPS1) was initially thought to be highly sensitive and specific for carcinomas and mesenchymal tumors of mammary origin, more recent data suggest its expression is not limited to breast neoplasms but also can be seen in other cutaneous neoplasms, such as extramammary Paget disease and squamous cell carcinoma (SCC) in situ.
Methods Two-hundred cases of non-melanocytic cutaneous neoplasm, including basal cell carcinomas (BCCs) (n = 41), SCCs (n = 35), Merkel cell carcinomas (MCCs) (n = 25), and adnexal neoplasms (n = 99), were tested for TRPS1 expression using a monoclonal anti- TRPS1 rabbit anti-human antibody.
Results TRPS1 expression was present in almost all cases of SCC (94%), with a median H-score of 200, while it was either absent or only focally present in most BCCs (90%), with a median H-score of 5. The difference between BCCs and SCCs in H-score was significant (p < .001). All MCCs (100%) lacked TRPS1 expression. TRPS1 expression was frequently seen in most adnexal neoplasms, benign and malignant, in variable intensity and proportion but was consistently absent in apocrine carcinomas. All endocrine mucin-producing sweat gland carcinomas (EMPSGCs) (100%, 6/6) showed diffuse and strong TRPS1 immunoreactivity, with a median H-score of 300, which was significantly different (p < .001) than that of BCCs.
Conclusions Our study shows that TRPS1 may be an effective discriminatory marker for BCCs and SCCs. It also has a role in distinguishing BCCs from EMPSGCs.
Schwannomas are benign, slow-growing peripheral nerve sheath tumors commonly occurring in the head, neck, and flexor regions of the extremities. Although most schwannomas are easily diagnosable, their variable morphology can occasionally create difficulty in diagnosis. Reporting pathologists should be aware that schwannomas can exhibit a broad spectrum of morphological patterns. Clinical and radiological examinations can show correlation and should be performed, in conjunction with ancillary tests, when appropriate. Furthermore, deferring a definitive diagnosis until excision may be necessary for small biopsy specimens and frozen sections. This report underscores these challenges through examination of two unique schwannoma cases, one predominantly cellular and the other myxoid, both of which posed significant challenges in histological interpretation.
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.
Background We aimed to study the clinicopathologic and immunohistochemical (IHC) (CD117, c-Myc, and p53) characteristics, and overall survival of primary and secondary breast angiosarcoma (BAS).
Methods This was a retrospective study of BAS cases diagnosed between 1997 and 2020 at our institution. Hematoxylin and eosin-stained slides were reviewed for tumor morphology, margin status, and lymph node metastasis. CD117, p53, D2-40, CD31, and c-Myc IHC stains were performed on 11 viable tissue blocks. Additional clinical information was obtained from the electronic medical records.
Results Seventeen patients with BAS were identified. Of these, five (29%) were primary and 12 (71%) were secondary BAS, respectively. The median age at diagnosis for primary BAS was 36 years. The median age at diagnosis for secondary BAS was 67 years. The median time to secondary BAS development following radiotherapy was 6.5 years (range, 2 to 12 years). There was no significant difference between primary and secondary BAS in several histopathologic parameters examined, including histologic grade, necrosis, mitotic count, lymph node metastasis, and positive tumor margins. There was also no difference in CD117, p53, D2-40, CD31, and c-Myc expression by IHC between primary and secondary BAS. During a median followup of 21 months, primary BAS had two (40%) reported deaths and secondary BAS had three (25%) reported deaths. However, this difference in survival between both groups was not statistically significant (hazard ratio, 0.51; 95% confidence interval, 0.09 to 3.28; p = .450).
Conclusions BAS is a rare and aggressive disease. No histologic, IHC (CD117, c-Myc, and p53), or survival differences were identified between primary and secondary BAS in this study.
Citations
Citations to this article as recorded by
Primary ovarian angiosarcoma: Two case reports and review of literature Ying Zhou, Yi-Wen Sun, Xiao-Yang Liu, Dan-Hua Shen World Journal of Clinical Cases.2023; 11(21): 5122. CrossRef
Background Next-generation sequencing (NGS) is an approved test to select patients for BRAF V600E targeted therapy in Korea. However, the high cost, long turnaround times, and the need for sophisticated equipment and skilled personnel limit the use of NGS in daily practice. Immunohistochemistry (IHC) is a rapid and relatively inexpensive assay available in most laboratories. Therefore, in this study, we evaluate the usefulness of BRAF VE1 IHC in terms of predictive value and interobserver agreement in non–small cell lung cancers (NSCLCs).
Methods A total of 30 cases with known BRAF mutation status were selected, including 20 cases of lung adenocarcinomas, six cases of colorectal adenocarcinomas, and four cases of papillary thyroid carcinomas. IHC for BRAF V600E was carried out using the VE1 antibody. Fifteen pathologists independently scored both the staining intensity and the percentage of tumor cell staining on whole slide images.
Results In the lung adenocarcinoma subset, interobserver agreement for the percentage of tumor cell staining and staining intensity was good (percentage of tumor cell staining, intraclass correlation coefficient = 0.869; staining intensity, kappa = 0.849). The interobserver agreement for the interpretation using the cutoff of 40% was almost perfect in the entire study group and the lung adenocarcinoma subset (kappa = 0.815). Sensitivity, specificity, positive predictive value, and negative predictive value of BRAF VE1 IHC were 80.0%, 90.0%, 88.9%, and 81.8%, respectively.
Conclusions BRAF VE1 IHC could be a screening test for the detection of BRAF V600E mutation in NSCLC. However, further studies are needed to optimize the protocol and to establish and validate interpretation criteria for BRAF VE1 IHC.
Citations
Citations to this article as recorded by
Dedifferentiated Leiomyosarcoma of the Uterine Corpus with Heterologous Component: Clinicopathological Analysis of Five Consecutive Cases from a Single Institution and Comprehensive Literature Review Suyeon Kim, Hyunsik Bae, Hyun-Soo Kim Diagnostics.2024; 14(2): 160. CrossRef
Differentiating BRAF V600E- and RAS-like alterations in encapsulated follicular patterned tumors through histologic features: a validation study Chankyung Kim, Shipra Agarwal, Andrey Bychkov, Jen-Fan Hang, Agnes Stephanie Harahap, Mitsuyoshi Hirokawa, Kennichi Kakudo, Somboon Keelawat, Chih-Yi Liu, Zhiyan Liu, Truong Phan-Xuan Nguyen, Chanchal Rana, Huy Gia Vuong, Yun Zhu, Chan Kwon Jung Virchows Archiv.2024;[Epub] CrossRef
BRAF V600E Mutation of Non-Small Cell Lung Cancer in Korean Patients Hyo Yeong Ahn, Chang Hun Lee, Min Ki Lee, Jung Seop Eom, Yeon Joo Jeong, Yeong Dae Kim, Jeong Su Cho, Jonggeun Lee, So Jeong Lee, Dong Hoon Shin, Ahrong Kim Medicina.2023; 59(6): 1085. CrossRef
Reevaluating diagnostic categories and associated malignancy risks in thyroid core needle biopsy Chan Kwon Jung Journal of Pathology and Translational Medicine.2023; 57(4): 208. CrossRef
Background The aim of the present study was to evaluate the prognostic significance of B-cell lymphocyte kinase (BLK) expression for survival outcomes in diffuse large B-cell lymphoma (DLBCL) patients treated with R-CHOP.
Methods We retrospectively analyzed the medical records of 89 patients from two tertiary referral hospitals. The expression of BLK, SYK, and CDK1 were evaluated in a semiquantitative method using an H-score, and the proportions of BCL2 and C-MYC were evaluated.
Results A total of 89 patients received R-CHOP chemotherapy as a first-line chemotherapy. The expression rates of BLK in tumor cells was 39.2% (n = 34). BLK expression status was not significantly associated with clinical variables; however, BLK expression in tumor cells was significantly associated with the expression of both C-MYC and BCL2 (p = .003). With a median follow-up of 60.4 months, patients with BLK expression had significantly lower 5-year progression-free survival (PFS) and overall survival rates (49.8% and 60.9%, respectively) than patients without BLK expression (77.3% and 86.7%, respectively). In multivariate analysis for PFS, BLK positivity was an independent poor prognostic factor (hazard ratio, 2.208; p = .040).
Conclusions Here, we describe the clinicopathological features and survival outcome according to expression of BLK in DLBCL. Approximately 39% of DLBCL patients showed BLK positivity, which was associated as a predictive marker for poor prognosis in patients who received R-CHOP chemotherapy.
Citations
Citations to this article as recorded by
Exploring the cell-free total RNA transcriptome in diffuse large B-cell lymphoma and primary mediastinal B-cell lymphoma patients as biomarker source in blood plasma liquid biopsies Philippe Decruyenaere, Edoardo Giuili, Kimberly Verniers, Jasper Anckaert, Katrien De Grove, Malaïka Van der Linden, Dries Deeren, Jo Van Dorpe, Fritz Offner, Jo Vandesompele Frontiers in Oncology.2023;[Epub] CrossRef
Background The diagnosis of osteosarcoma (OSA) depends on clinicopathological and radiological correlation. A biopsy is considered the gold standard for OSA diagnosis. However, since OSA is a great histological mimicker, diagnostic challenges exist. Immunohistochemistry (IHC) can serve as an adjunct for the histological diagnosis of OSA. Special AT-rich sequence-binding protein 2 (SATB2) was recently described as a reliable adjunct immunohistochemical marker for the diagnosis of OSA.
Methods We investigated the IHC expression of SATB2 in 95 OSA and 100 non-osteogenic bone and soft tissue tumors using a monoclonal antibody (clone EPNCIR30A). The diagnostic utility of SATB2 and correlation with clinicopathological parameters were analyzed.
Results SATB2 IHC was positive in 88 out of 95 cases (92.6%) of OSA and 50 out of 100 cases (50.0%) of primary non-osteogenic bone and soft tissue tumors. Of the 59 bone tumors, 37 cases (62.7%) were positive for SATB2, and of the 41 soft tissue tumors, 13 cases (31.7%) were positive for SATB2. The sensitivity of SATB2 as a diagnostic test was 92.6%, specificity 50%, positive predictive value 63.8%, and negative predictive value 87.7%.
Conclusions Although SATB2 is a useful diagnostic marker for OSA, other clinical, histological and immunohistochemical features should be considered for the interpretation of SATB2.
Citations
Citations to this article as recorded by
Favorable treatment response to high‐grade sarcoma in neurofibromatosis 1 Michelle H. Talukder, Mauli M. Patel, Tala Al‐Saghir, Ghadir K. Katato, Janet Poulik, William J. Powell, Alysia K. Kemp, Steven Miller, Danielle Bell, Jeffrey W. Taub Pediatric Blood & Cancer.2023;[Epub] CrossRef
Hepatic carcinoma expressing inhibin is a recently described neoplasm with varied architecture, including trabecular, pseudoglandular, follicular/microcystic, organoid, solid and tubular patterns of growth. We report a case of hepatic carcinoma expressing inhibin that occurred in a 47-year-old woman presenting with epigastric and back pain. The tumor was located in the left hepatic lobe and measured 12 cm in diameter. On immunohistochemical stains, the neoplastic cells were positive for inhibin, as well as cytokeratins 7, 8/18 and 19. There was mild focal expression of synaptophysin, and lack of expression of hepatocytic markers. The histogenesis of hepatic carcinoma expressing inhibin is presently uncertain. From a practical point of view, this neoplasm can potentially cause diagnostic pitfalls by simulating other primary or metastatic tumors, such as hepatocellular carcinoma, cholangiocarcinoma, neuroendocrine tumors, and follicular carcinoma of thyroid gland. Performing inhibin immunostain could assist in the differential diagnosis of liver tumors with unusual histologic features.
Background Prostate-specific membrane antigen (PSMA) expression is encountered in tumor-associated neovascularization.
Methods PSMA-antibody was applied to the paraffin blocks of 51 patients who were diagnosed with squamous cell carcinoma of the larynx and underwent laryngectomy and one who underwent lymph node dissection. The percentage of vascular expression in tumoral and extratumoral stroma and lymph nodes and intensity score in tumoral epithelium were evaluated and divided into groups according to the level of PSMA expression. Final PSMA expression was determined by multiplying intensity and percentage scores.
Results The mean age was 61±10 years. Patients with perineural invasion, cartilage invasion, and local invasion exhibited higher PSMA expression scores. Age, tumor differentiation, tumor diameter, perineural invasion, tumor localization, capsular invasion, depth of invasion, surgical margin status, local invasion, nodal metastasis, TNM classification, and stage were similar in high and low PSMA expression groups. There was no PSMA expression in extratumoral vascular stroma. Significantly higher PSMA expression was observed in the vascular endothelium of metastatic lymph nodes compared with reactive lymph nodes. Patients with advanced-stage disease exhibited higher PSMA vascular expression scores compared to those with earlier stages (p<.001). PSMA expression was not correlated with overall survival, disease-specific survival, or disease-free survival (p>.05).
Conclusions Our study suggests that higher PSMA expression is associated with cartilage invasion, local invasion, and advanced-stage of disease. PSMA expression can be utilized for detection of lymph node metastasis and has some predictive role in cases of neck metastasis.
Citations
Citations to this article as recorded by
A Practical Guide to the Pearls and Pitfalls of PSMA PET Imaging Andrew F. Voter, Rudolf A. Werner, Hatice Savas, Andrei Gafita, Ashley E. Ross, Michael A. Gorin, Lilja B. Solnes, Martin G. Pomper, Steven P. Rowe, Sara Sheikhbahaei Seminars in Nuclear Medicine.2024; 54(1): 119. CrossRef
p53 and PTEN expression evaluation with molecular evident recent criteria in laryngeal carcinoma Ayca Tan, Gorkem Eskiizmir, Ugur Kamiloglu, Sulen Sarioglu Medicine.2023; 102(19): e33676. CrossRef
Diagnostic, Prognostic, and Therapeutic Role for Angiogenesis Markers in Head and Neck Squamous Cell Carcinoma: A Narrative Review Lara Alessandrini, Laura Astolfi, Antonio Daloiso, Marta Sbaraglia, Tiziana Mondello, Elisabetta Zanoletti, Leonardo Franz, Gino Marioni International Journal of Molecular Sciences.2023; 24(13): 10733. CrossRef
Hemangioblastoma (HB) is a rare benign tumor that most commonly occurs in the cerebellum. HB is composed of neoplastic stromal cells and abundant small vessels. However, the exact origin of stromal cells is controversial. Extraneural HBs have been reported in a small series, and peripheral HBs arising in the adrenal gland are extremely rare. Herein, we report a case of sporadic adrenal HB in a 54-year-old woman. The tumor was a well-circumscribed, yellow mass measuring 4.2 cm in diameter. Histologically, the tumor was composed of small blood vessels and vacuolated stromal cells with clear cytoplasm. On immunohistochemical stain, the stromal cells were positive for S-100 protein, neuron-specific enolase, and synaptophysin. The tumor did not reveal mutation of VHL alleles. We herein present a case of HB of the adrenal gland and review of the literature.
Solitary fibrous tumor (SFT) is a rare type of mesenchymal neoplasm that first was discovered in the pleura but can also affect the peritoneum, lungs, mediastinum, and skin. Cutaneous malignant SFT is an extremely rare tumor that resembles dermatofibrosacoma protuberance (DFSP) histologically and immunohistochemically. Herein, we describe a case of malignant SFT that presented as a recurrent mass on the scalp. The first lesion was totally excised one year before recurrence and was diagnosed as a DFSP based on the histopathology and cluster of differentiation 34 immunostaining positivity. Re-examination of the previously examined specimen was considered. Activator of transcription 6 positivity was also detected in the tissue, confirming the diagnosis of a recurrent malignant SFT rather than DFSP. There was no evidence of recurrence, locoregional, or distant metastases at six months after lesion removal with a safety margin.
Citations
Citations to this article as recorded by
Prolonged generalized osteomalacia associated with a sinonasal cavity phosphaturic mesenchymal tumor: A case report Mehdi Montazer, Naser Tayyebi Meibodi, Elmira Teymouri, Zohreh Mousavi, Sedigheh Reisian, Motahare Ebrahimnejad Clinical Case Reports.2024;[Epub] CrossRef
Giant Cell Tumor of Soft Tissue on the Forearm Skin: Case Report and Literature Review Abdulkarim Hasan, Khalid Nafie, Mohamed Adwi, Ayman Abdelmaksoud, Mohammed S. Abdelwahed, Abdulhadi Samman, Mohammad A. Alghamdi, Hasan S. Al-Ghamdi, Hind Ali Hendi, S. K. A. Horsu Open Access Macedonian Journal of Medical Sciences.2023; 11(C): 71. CrossRef
Primary sclerosing liposarcoma of the ovary: Case report and a review of the literature Thyagaraja Dhanurjaya, Turnbull Hilary, Jasenka Mazibrada International Journal of Surgery Case Reports.2023; 109: 108513. CrossRef
Favorable outcome of a histiocytic sarcoma patient treated with immune checkpoint inhibitor: a case report Long Thanh Nguyen, Giang Hoang Pham, Phuong Thi Vu, Hyeon Gyu Yi Annals of Medicine & Surgery.2023; 85(12): 6274. CrossRef
Adrenal Solitary Fibrous Tumor: A Case Report Elena Casademunt-Gras, Isabel Salinas, Pau Moreno Santabarbara, Gustavo Tapia Melendo, Jordi L Reverter Cureus.2023;[Epub] CrossRef
A Rare Case of Malignant Solitary Fibrous Tumor on the Scalp Kwang-Ryeol Kim, Ki Hong Kim Keimyung Medical Journal.2023; 42(2): 107. CrossRef
Background Triple-negative breast cancer (TNBC) has a relatively poor prognosis. Research has identified potential metabolic targets, including fatty acid metabolism, in TNBC. The absence of effective target therapies for TNBC led to exploration of the role of fatty acid synthetase (FASN) as a potential target for TNBC therapy. Here, we analyzed the expression of FASN, a representative lipid metabolism–related protein, and investigated the association between FASN expression and Ki-67 and the programmed death ligand 1 (PD-L1) biomarkers in TNBC.
Methods Immunohistochemical expression of FASN was analyzed in 166 patients with TNBC. For analytical purposes, patients with 0–1+ FASN staining were grouped as low-grade FASN and patients with 2–3+ FASN staining as high-grade FASN.
Results FASN expression was observed in 47.1% of TNBC patients. Low and high expression of FASN was identified in 75.9% and 24.1%, respectively, and no statistically significant difference was found in T category, N category, American Joint Committee on Cancer stage, or recurrence rate between the low and high-FASN expression groups. Ki-67 proliferation level was significantly different between the low and high-FASN expression groups. FASN expression was significantly related to Ki-67 as the level increased. There was no significant difference in PD-L1 positivity between the low- and high-FASN expression groups.
Conclusions We identified FASN expression in 166 TNBC patients. The Ki-67 proliferation index was positively correlated with FASN level, indicating higher proliferation activity as FASN increases. However, there was no statistical association with PD-L1 SP142, the currently FDA-approved assay, or FASN expression level.
Citations
Citations to this article as recorded by
NFYA promotes malignant behavior of triple-negative breast cancer in mice through the regulation of lipid metabolism Nobuhiro Okada, Chihiro Ueki, Masahiro Shimazaki, Goki Tsujimoto, Susumu Kohno, Hayato Muranaka, Kiyotsugu Yoshikawa, Chiaki Takahashi Communications Biology.2023;[Epub] CrossRef
Role of EGFR and FASN in breast cancer progression Suchi Chaturvedi, Mainak Biswas, Sushabhan Sadhukhan, Avinash Sonawane Journal of Cell Communication and Signaling.2023; 17(4): 1249. CrossRef
Bioinformatics Method Was Used to Analyze the Highly Expressed Gene FAM83A of Breast Cancer in Young Women Yongzhe Tang, Hao Wang, Qi He, Yuanyuan Chen, Jie Wang, Fahd Abd Algalil Applied Bionics and Biomechanics.2022; 2022: 1. CrossRef
NCAPH promotes proliferation as well as motility of breast cancer cells by activating the PI3K/AKT pathway Ting Zhang, Peng Li, Wanying Guo, Qipeng Liu, Weiqiang Qiao, Miao Deng Physiology International.2022;[Epub] CrossRef
Follicular lymphoma (FL) is the most common indolent B-cell lymphoma and originates from germinal center B-cells (centrocytes and centroblasts) of the lymphoid follicle. Tumorigenesis is believed to initiate early in precursor B-cells in the bone marrow (BM) that acquire the t(14;18)(q32;q21). These cells later migrate to lymph nodes to continue their maturation through the germinal center reaction, at which time they acquire additional genetic and epigeneticabnormalities that promote lymphomagenesis. FLs are heterogeneous in terms of their clinicopathologic features. Most FLs are indolent and clinically characterized by peripheral lymphadenopathy with involvement of the spleen, BM, and peripheral blood in a substantial subset of patients, sometimes accompanied by constitutional symptoms and laboratory abnormalities. Diagnosis is established by the histopathologic identification of a B-cell proliferation usually distributed in an at least partially follicular pattern, typically, but not always, in a lymph node biopsy. The B-cell proliferation is biologically of germinal center cell origin, thus shows an expression of germinal center-associated antigens as detected by immunophenotyping. Although many cases of FLs are typical and histopathologic features are straightforward, the biologic and histopathologic variability of FL is wide, and an accurate diagnosis of FL over this disease spectrum requires knowledge of morphologic variants that can mimic other lymphomas, and rarely non-hematologic malignancies, clinically unique variants, and pitfalls in the interpretation of ancillary studies. The overall survival for most patients is prolonged, but relapses are frequent. The treatment landscape in FL now includes the application of immunotherapy and targeted therapy in addition to chemotherapy.
Citations
Citations to this article as recorded by
The follicular lymphoma tumor microenvironment at single-cell and spatial resolution Andrea J. Radtke, Mark Roschewski Blood.2024; 143(12): 1069. CrossRef
Transformation of low-grade follicular lymphoma to a high-grade follicular lymphoma with the histopathological diagnosis from oral biopsy: a case report Gabriela Silveira de Araujo, Leandro Dorigan de Macedo, Alfredo Ribeiro-Silva, Hilton Marcos Alves Ricz, Lara Maria Alencar Ramos Innocentini Hematology, Transfusion and Cell Therapy.2023;[Epub] CrossRef
Clinical features and prognostic factors in 49 patients with follicular lymphoma at a single center: A retrospective analysis Hao Wu, Hui-Cong Sun, Gui-Fang Ouyang World Journal of Clinical Cases.2023; 11(14): 3176. CrossRef
A rare case of follicular lymphoma of the bladder Matthew DeSanto, Robert Strait, Jared Zopp, Kevin Brown, Samuel Deem Urology Case Reports.2023; 51: 102542. CrossRef
Analysis of immunophenotypic features in hyaline vascular type Castleman disease Yu Chang, Yu Ma, Chen Chang, Wensheng Li Diagnostic Pathology.2023;[Epub] CrossRef
A review of the totality of evidence in the development of ABP 798, a rituximab biosimilar Patrick Cobb, Dietger Niederwieser, Stanley Cohen, Caroline Hamm, Gerd Burmester, Neungseon Seo, Sonya G Lehto, Vladimir Hanes Immunotherapy.2022; 14(9): 727. CrossRef
Background Acute kidney injury (AKI) is a common cause of morbidity and mortality. It mainly targets the renal tubular epithelium with pathological changes, referred to as acute tubular injury. The latter is followed by a regenerative response that is difficult to visualize on routine hematoxylin and eosin (H&E) stains. In this study, we examined the regenerative capacity of renal tubules by correlating vimentin (VIM) immunohistochemical (IHC) expression and pathological findings of AKI and renal tubular regeneration (RTR) on H&E.
Methods We reviewed 23 autopsies performed in the clinical setting of AKI and RTR. VIM expression was scored in the renal cortical tubular epithelium using a statistical cutoff ≥ 3% for high expression and < 3% for low expression.
Results Of the 23 kidney tissues examined, seven (30.4%) had low VIM expression, and 16 (69.6%) had high VIM expression. Kidney tissues with evidence of AKI and RTR had significantly higher VIM expression. Renal peritubular microenvironment features showing regenerative changes on H&E were associated with high VIM expression. In the univariate model, kidney tissues with RTR were 18-fold more likely to have high VIM expression.
Conclusions In conclusion, our findings suggest that VIM could serve as an IHC marker for RTR following AKI. However, correlation with H&E findings remains critical to excluding chronic tubular damage. Collectively, our preliminary results pave the way for future studies including a larger sample size to validate the use of VIM as a reliable biomarker for RTR.
Citations
Citations to this article as recorded by
Characterization of macrophages in ischemia–reperfusion injury-induced acute kidney injury based on single-cell RNA-Seq and bulk RNA-Seq analysis Qin Wang, Yuxing Liu, Yan Zhang, Siyuan Zhang, Meifang Zhao, Zhangzhe Peng, Hui Xu, Hao Huang International Immunopharmacology.2024; 130: 111754. CrossRef