Journal of Pathology and Translational Medicine

Sang Yun Ha

4 Articles

Diffuse Large B-Cell Lymphoma Associated with Chronic Inflammation Manifested as a Soft Tissue Mass: Incidental Discovery on Histological Examination.: Sang Yun Ha, Yoon La Choi, Sung Joo Kim, Young Hye Ko; Korean J Pathol. 2011;45(4):417-422.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.4.417

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We report an extraordinary case of diffuse large B-cell lymphoma arising in a cystic necrotic mass in a 35-year-old man who presented with a soft tissue mass at the site of previous surgery. A benign mass was surgically removed 17 years ago, after which a cystic lesion gradually developed at the same site. The resected mass appeared as a thick-walled cyst filled with brown necrotic and hemorrhagic material. On microscopic examination, the cyst wall was primarily necrotic tissue with some aggregates of large atypical lymphoid cells. These atypical cells were diffusely positive for CD20 and showed a high proliferation index, Epstein-Barr virus positivity, and clonal rearrangement of the immunoglobulin gene. His present condition was diagnosed as Epstein-Barr virus-associated diffuse large B-cell lymphoma arising from chronic inflammation. It is important to be aware of the clinical manifestations and histological features of this rare disease in light of diagnosis and treatment.

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EBV-negative Fibrin-Associated Large B-Cell Lymphoma Arising in Thyroid Hyperplastic Nodule: Report of a Case and Literature Review
Tin Wai Ho, Wah Cheuk, John K.C. Chan
International Journal of Surgical Pathology.2023; 31(7): 1420. CrossRef
Diffuse Large B Cell Lymphoma in a Prosthetic Aortic Graft
David Bell, David Marshman
Heart, Lung and Circulation.2017; 26(2): e4. CrossRef
Fibrin-associated EBV-positive Large B-Cell Lymphoma
Daniel F. Boyer, Penelope A. McKelvie, Laurence de Leval, Kerstin L. Edlefsen, Young-Hyeh Ko, Zachary A. Aberman, Alexandra E. Kovach, Aneal Masih, Ha T. Nishino, Lawrence M. Weiss, Alan K. Meeker, Valentina Nardi, Maryknoll Palisoc, Lina Shao, Stefania P
American Journal of Surgical Pathology.2017; 41(3): 299. CrossRef
Malignant Lymphoma Mimicking an Infection After Shoulder Surgery
Jabari Ian Justin Martin, Jasmine Bauknight, Vincent Desiderio, Bahman Sadr
Journal of the American Academy of Orthopaedic Surgeons.2017; 25(4): 314. CrossRef
Current Concepts in Primary Effusion Lymphoma and Other Effusion-Based Lymphomas
Yoonjung Kim, Chan Jeong Park, Jin Roh, Jooryung Huh
Korean Journal of Pathology.2014; 48(2): 81. CrossRef

Mucoepidermoid Carcinoma of Tracheobronchial Tree: Clinicopathological Study of 31 Cases.: Sang Yun Ha, Joungho Han, Jae Jun Lee, Young Eun Kim, Yoon La Choi, Hong Kwan Kim; Korean J Pathol. 2011;45(2):175-181.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.2.175

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Abstract PDF

BACKGROUND
All aspects of mucoepidermoid carcinoma (MEC) of the lung including histologic grading, clinical behavior and its differentiation from adenosquamous cell carcinoma are still not fully understood.
METHODS
We reviewed the hematoxylin-eosin stained slides and medical records of 31 cases of MEC of the lungs. The cases were classified as low and high grade according to the quantitative grading system formulated for MEC. High grade tumors were tested for an epidermal growth factor receptor (EGFR) mutation.
RESULTS
Twenty eight cases were classified as low grade and 3 cases as high grade. Histologically, lower glandular component, cellular atypia, necrosis, mitoses >4/10 high power fields, and endolymphatic tumor emboli were typical characteristics of a high grade tumor. Although some tumors showed histologic features mimicking high grade tumors, they were classified as low grade tumors according to this quantitative grading system. Low grade tumors showed no recurrence or metastasis. However, among three patients with a high grade tumor, two had distant metastases and one died of disease. Additionally, an EGFR mutation was not detected.
CONCLUSIONS
A high grade MEC was consistently different from a low grade tumor with regard to malignant histologic features and poor prognosis. Therefore, correct histologic grading is important in predicting the prognosis to avoid unnecessary treatment.

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A rare case of endobronchial mucoepidermoid carcinoma of the lung presenting as non-resolving pneumonia
Toolsie Omesh, Ranjan Gupta, Anjali Saqi, Joshua Burack, Misbahuddin Khaja
Respiratory Medicine Case Reports.2018; 25: 154. CrossRef
Cutaneous Involvement by Nasal Mucoepidermoid Carcinoma: The Tip of the Iceberg Phenomenon
Ge Zhao, Oliver Chang, John Streidl, Amit Bhrany, Kyle Garton, Timothy H. McCalmont, Paul E. Swanson, Zsolt Argenyi, Michi M. Shinohara
Journal of Cutaneous Pathology.2017; 44(2): 113. CrossRef
Surgical outcomes of pulmonary mucoepidermoid carcinoma: A review of 41 cases
Chih-Cheng Hsieh, Yung-Han Sun, Shih-Wei Lin, Yi-Chen Yeh, Mei-Lin Chan, Pei-Yi Chu
PLOS ONE.2017; 12(5): e0176918. CrossRef
Clinicopathologic characteristics of EGFR, KRAS, and ALK alterations in 6,595 lung cancers
Boram Lee, Taebum Lee, Se-Hoon Lee, Yoon-La Choi, Joungho Han
Oncotarget.2016; 7(17): 23874. CrossRef
Metastatic Pulmonary Mucoepidermoid Carcinoma with Fulminant Clinical Course
Yong Won Park, Seon Bin Yoon, Mi Ju Cheon, Young Min Koh, Hyeon Sik Oh, Se Joong Kim, Seung Hyeun Lee
The Ewha Medical Journal.2015; 38(2): 85. CrossRef
Lung cancer in never-smoker Asian females is driven by oncogenic mutations, most often involving EGFR
Sang Yun Ha, So-Jung Choi, Jong Ho Cho, Hye Joo Choi, Jinseon Lee, Kyungsoo Jung, Darry Irwin, Xiao Liu, Maruja E. Lira, Mao Mao, Hong Kwan Kim, Yong Soo Choi, Young Mog Shim, Woong Yang Park, Yoon-La Choi, Jhingook Kim
Oncotarget.2015; 6(7): 5465. CrossRef
Bronchoscopic Resection of an Exophytic Endoluminal Tracheal Mass
Russell J. Miller, Septimiu D. Murgu
Annals of the American Thoracic Society.2013; 10(6): 697. CrossRef
EGFR mutations and mucoepidermoid carcinoma: Putative significance in differing populations
Iain D. O’Neill
Lung Cancer.2012; 78(1): 125. CrossRef

Localized Primary Thymic Amyloidosis Presenting as a Mediastinal Mass: A Case Report.: Sang Yun Ha, Jae Jun Lee, Heejung Park, Joungho Han, Hong Kwan Kim, Kyung Soo Lee; Korean J Pathol. 2011;45:S41-S44.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S41

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Abstract PDF

We herein describe a case of a 55-year-old healthy woman with localized primary thymic amyloidosis presented as a mediastinal mass, found incidentally by chest radiography. Computed tomography revealed a 4.1 cm soft tissue lesion with nodular calcification in the left anterior mediastinum. The resected specimen was a well-defined lobulating mass with calcification. Microscopically, the mass was consisted of amorphous eosinophilc hyalinized substances involving the thymus and intrathymic lymph nodes. These eosinophilic substances showed apple-green bi-refringence under polarized light after staining with Congo red. In immunohistochemical study, they were positive for kappa and lambda light chains and negative for amyloid A. There was no evidence of systemic amyloidosis in clinical investigations. A final diagnosis of localized primary thymic amyloidosis was made.

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EBUS-TBNA diagnosis of localised amyloidosis presenting as mediastinal lymphadenopathy
Avnee Kumar, Barathi Sivasailam, Ellen Marciniak, Janaki Deepak
BMJ Case Reports.2018; 11(1): e226619. CrossRef
Ocular Myasthenia Gravis Associated With Thymic Amyloidosis
Kristin O. Chapman, Debra M. Beneck, Marc J. Dinkin
Journal of Neuro-Ophthalmology.2016; 36(1): 50. CrossRef
Localized Thymic Amyloidosis Presenting with Myasthenia Gravis: Case Report
Seung-Myoung Son, Yong-Moon Lee, Si Wook Kim, Ok-Jun Lee
Journal of Korean Medical Science.2014; 29(1): 145. CrossRef

Prognostic Significance of Methylation Profiles in Urothelial Carcinomas of the Bladder.: Hee Jung Park, Eui Jin Lee, Sang Yun Ha, Ghee Young Kwon, Young Lyun Oh, Kyoung Mee Kim, Dae Shick Kim, Seongil Seo, Hyun Moo Lee, Han Yong Choi; Korean J Pathol. 2010;44(6):623-630.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.6.623

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Abstract PDF

BACKGROUND
Study on epigenetics of urothelial carcinomas has expanded and allowed better understanding of their correlation with clinicopathologic features. The aim of this study was to determine reliable predictive epigenetic markers for patients with urothelial carcinoma of urinary bladder.
METHODS
In 64 urothelial carcinomas of the urinary bladder, methylationspecific polymerase chain reaction with RAS association domain family 1A (RASSF1A), adenomatous polyposis coli (APC), death-associated protein-kinase (DAPK), runt-related transcription factor 3 (RUNX3), p14, p16 and MGMT was performed and correlated the results with p53 mutations, DNA ploidy, clinicopathologic parameters and recurrences.
RESULTS
Hypermethyation of RASSF1A, APC, DAPK, RUNX3, p14, p16 and MGMT promoters was observed in 35 (54.7%), 29 (45.3%), 18 (28.1%), 18 (28.1%), 9 (14.1%), 2 (3.1%), and 6 (9.4%) cases, respectively. Hypermethylation of RUNX3 and APC was significantly associated with high histologic grades and aneuploidy. Methylation of DAPK was significantly associated with muscle invasion. Methylation of DAPK and RUNX3 genes was significantly associated with recurrence. In survival analyses, methylation of RUNX3 gene and methylation-high (methylation at two or more loci) phenotype was significantly associated with poor recurrence-free survival.
CONCLUSIONS
Methylation of RUNX3 gene and methylation-high phenotype are significant indicator of recurrence.

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DAPK Promoter Methylation and Bladder Cancer Risk: A Systematic Review and Meta-Analysis
Lihe Dai, Chong Ma, Zhensheng Zhang, Shuxiong Zeng, Anwei Liu, Shijie Tang, Qian Ren, Yinghao Sun, Chuanliang Xu, Shengtao Zhou
PLOS ONE.2016; 11(12): e0167228. CrossRef

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