Journal of Pathology and Translational Medicine

Jungsuk An

7 Articles

Morphometric Analysis for Pulmonary Small Cell Carcinoma Using Image Analysis.: Sun Min Jeong, Seung Yeon Ha, Jungsuk An, Hyun Yee Cho, Dong Hae Chung, Na Rae Kim, Sanghui Park; Korean J Pathol. 2011;45(1):87-91.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.87

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BACKGROUND
There are few studies of how to diagnose small cell lung cancer in cytological tests through morphometric analysis. We tried to measure and analyze characteristics of small cell carcinoma in lung by image analysis.
METHODS
We studied three types of cytologic specimens from 89 patients who were diagnosed with small cell lung cancer by immunohistochemistry. We measured area, perimeter, maximal length and maximal width of cells from small cell carcinoma using image analysis.
RESULTS
In lung aspirates, the nuclear mean area, perimeter, maximal length and maximal width of small cell lung cancer were 218.69 microm2, 55 microm, 18.48 microm and 14.65 microm. In bronchial washings, nuclear measurements were 194.66 microm2, 50.07 microm, 16.27 microm and 14.1 microm. In pleural fluid, values were 177.85 microm2, 48.09 microm, 15.7 microm and 13.37 microm.
CONCLUSIONS
Nuclear size of small cell lung carcinoma is variable and depends on the cytology method. Nuclei are spindle-shaped and larger in small cell carcinoma from lung aspirates than in bronchial washings or pleural fluid. The cytoplasms of the cells in bronchial washings and pleural fluid were swollen. Therefore, one should consider morphologic changes when trying to diagnose small cell lung cancer through cytological tests.

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Interobserver Variability in Diagnosing High-Grade Neuroendocrine Carcinoma of the Lung and Comparing It with the Morphometric Analysis
Seung Yeon Ha, Joungho Han, Wan-Seop Kim, Byung Seong Suh, Mee Sook Roh
Korean Journal of Pathology.2012; 46(1): 42. CrossRef

Cytologic Findings of Alveolar Soft Part Sarcoma Presenting with Multiple Pulmonary Masses: A Case Report with Review of Literature.: Na Rae Kim, Jae Y Ro, Eun Kyung Cho, Mi Jin Kim, Jungsuk An, Seung Yeon Ha; Korean J Pathol. 2011;45(1):119-124.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.119

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Abstract PDF

Alveolar soft part sarcoma (ASPS) is a rare malignant soft tissue tumor of uncertain origin, and it has a strong propensity for metastasis to the lungs, bones and brain. We report upon an unusual case of ASPS, presenting as multiple lung nodules with no other detectable primary site, in a 44-year-old man. A fine needle aspiration of the nodules yielded scattered, discohesive cells, each containing an eccentrically displaced nucleus and prominent nucleolus, on a granular background. Tumor cells with numerous bared nuclei, and occasional sheets of epithelioid cells were also found. Under the cytological diagnosis of an unclassified epithelioid malignant tumor, resection of the lung nodules was performed. The histologic findings were consistent with ASPS, showing positive TFE3-nuclear immunoreactivity. There is limited literature concerning cytological findings associated with pulmonary ASPS: especially in cases where the primary site is unknown. Here, we present a cytological review of pulmonary ASPS, investigating the significance of TFE3 staining in the diagnosis of ASPS.

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Alveolar soft part sarcoma: A case report with emphasis on some unusual cytological features
Neelam Sood, Minakshi Gulia
Diagnostic Cytopathology.2018; 46(2): 170. CrossRef

Diffuse Pulmonary Meningotheliomatosis: A Case Report.: Jungsuk An, Heejung Park, Joungho Han, Tae Sung Kim, Yong Soo Choi, Moon Seok Choi, Sang Won Um; Korean J Pathol. 2011;45:S32-S35.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S32

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Abstract PDF

Diffuse pulmonary meningotheliomatosis (DPM) is an extremely rare condition. We herein report a unique case of DPM in a 54-year-old woman with a previous history of hepatocellular carcinoma. A chest computed tomography showed diffuse bilateral nodular infiltration, suggesting miliary spread of metastatic hepatocellular carcinoma. The patient underwent a video-assisted thoracoscopic surgery for diagnostic purposes. The cut surface of the lung specimen showed multiple dispersed small nodules, consisting of variably sized nests or whorls of bland epithelioid cells often along the walls of alveolar septa or in a perivascular network within the alveolar interstitium. The tumor cells showed immunoreactivity for epithelial membrane antigen, vimentin, and progesterone receptor. DPM should be included in the differential diagnosis of diffuse multiple small nodules or a reticular pattern in the radiologic studies.

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Minute Pulmonary Meningothelial-Like Nodules Simulating Hematogenous Lung Metastasis: A Case Report
Sang Kook Lee, Gi Jeong Kim, Young Jae Kim, Ah Young Leem, Eu Dong Hwang, Se Kyu Kim, Joon Chang, Young Ae Kang, Song Yee Kim
Tuberculosis and Respiratory Diseases.2013; 75(2): 67. 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

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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.

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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

Expression of p16, Rb and FHIT Proteins in Urothelial Carcinoma of the Urinary Bladder.: Sun Hee Han, Ju Han Lee, Seo Hee Kim, Jungsuk An, Eung Seok Lee, Young Sik Kim; Korean J Pathol. 2008;42(5):294-298.

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Abstract PDF: BACKGROUND
The goal of this study was to investigate the expression of p16, retinoblastoma (Rb) and fragile histidine triad (FHIT) proteins in urothelial carcinomas of the urinary bladder, and to evaluate the relationship between clinicopathlogic parameters and each protein expression level. METHODS: The expression of p16, Rb, and FHIT proteins were studied in 176 patients with urothelial carcinoma of the urinary bladder by immunohistochemistry. RESULTS: The diffuse positive expression of the p16 protein was significantly associated with high grade and advanced tumor depth (p=0.007 and p=0.020). The loss of the Rb protein was significantly associated with old age and disease recurrence (p=0.020 and 0.037). The loss of the FHIT protein was significantly associated with advanced tumor depth (p=0.002). CONCLUSION: Our data suggest that p16 and FHIT proteins may be involved in the progression of urothelial carcinoma. In addition, p16 may be a useful prognostic marker for individual urothelial carcinoma patients.

Metastatic Medullary Carcinoma of Thyroid to Breast; A Case Initially Diagnosed as Primary Invasive Lobular Carcinoma: A Case Report.: Youngseok Lee, Jungsuk An, Chul Hwan Kim, Bom Woo Yeom, Jong Sang Choi, Yang Seok Chae; Korean J Pathol. 2007;41(6):412-415.

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Abstract PDF: Metastasis to the breast from medullary carcinoma of the thyroid is extremely rare. We report a case of metastatic medullary carcinoma of the thyroid which presented as multiple breast masses with ipsilateral axillary lymphadenopathy in a 48-year-old woman. Six years ago, she underwent total thyroidectomy and neck dissection because of palpable neck masses, with a diagnosis of medullary thyroid carcinoma. Histological features of breast masses showed single- file or linear-cord arrangements, with plasmacytoid appearance, and the initial diagnosis was invasive lobular carcinoma. She underwent modified radical mastectomy. The tumor cells were diffusely positive for E-cadherin, calcitonin and thyroid transcription factor-1 (TTF-1) and were metastatic medullary carcinoma of thyroid. In the patients with a history of medullary carcinoma of the thyroid, a careful examination is necessary for a breast mass composed of solid and cord-like clusters of small round to ovoid cells with plasmacytoid appearance. Immunohistochemical staining for E-cadherin, calcitonin and TTF-1 could be helpful for differential diagnosis.

Fine Needle Aspiration Cytology of Extranodal Marginal Zone B cell Lymphoma with Abundant Plasma Cells and Eosinophilic Histiocytes in Parotid Gland.: Youngseok Lee, Jungsuk An, Yang Seok Chae, Bom Woo Yeom, Jong Sang Choi, Chul Hwan Kim; Korean J Cytopathol. 2007;18(2):165-169.

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Abstract PDF: The authors present the fine needle aspiration cytology (FNAC) cytologic findings of a case of extranodal marginal zone B cell lymphoma (MZBCL), which featured abundant plasma cells and eosinophilic histiocytes arising in both parotid glands. A 49-year-old female presented with palpable masses in both parotid glands. She had been suffering from systemic lupus erythematosus and rheumatoid arthritis. The lesions were evaluated by FNAC and smears showed a small number of clusters of oncocytic cells with abundant eosinophilic granular cytoplasm and small nuclei, intermixed with small to medium-sized lymphoid cells containing round to lobulated nuclei, which suggested Warthin's tumor. Some of lymphoid cells had a plasmacytoid appearance, and some scattered large cells contained a large amount of eosinophilic cytoplasm. Bilateral superficial parotidectomy was performed and a histopathologic study indicated MZBCL with abundant plasma cells, intermixed with eosinophilic histiocytes. The presence of oncocytic cells and a mixture of lymphoid and plasma cells indicates Warthin's tumor, but the cytologic features of a relatively monotonous small to medium-sized lymphoid infiltrate suggest the possibility of MZBCL in the clinical setting of an FNAC study performed on a patient suffering from a connective tissue disease.

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