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Fine Needle Aspiration Cytology of Parathyroid Lesions
허일영,조수연,박선후,정창원,고재수,이승숙,설혜실,최희승 대한병리학회 2013 Journal of Pathology and Translational Medicine Vol.47 No.5
Background: There has been an increase in the use of fine needle aspiration cytology (FNAC) for the diagnosis of parathyroid lesions (PLs). Differentiation between a thyroid lesion and a PL is not easy because of their similar features. We reviewed parathyroid aspirates in our institution and aimed to uncover trends in diagnostic criteria. Methods: We selected 25 parathyroid aspirates (from 6 men and 19 women) confirmed surgically or immunohistochemically from 2006 to 2011. Results: Major architectural findings of PLs include scattered naked nuclei, loose clusters, a papillary pattern with a fibrovascular core, tight clusters, and a follicular pattern. These architectures were commonly admixed with one another. Cytological features included anisokaryosis, stippled chromatin, a well-defined cell border, and oxyphilic cytoplasm. Eighteen of the 25 patients were diagnosed with PL using FNAC. Seven patients had been misdiagnosed with atypical cells (n=2), benign follicular cells (n=2), adenomatous goiter (n=2) and metastatic carcinoma (n=1) in FNAC. Using clinicoradiologic data, the sensitivity of the cytological diagnosis was 86.7%. The cytological sensitivity decreased to 50% without this information. Conclusions: FNAC of PL is easily confused with thyroid lesions. A combination of cytological parameters and clinical data will be required to improve the diagnostic sensitivity of PLs.
조수연,조수연,허일영,고재수,진성호,강혜진 대한병리학회 2012 Journal of Pathology and Translational Medicine Vol.46 No.2
Synovial sarcoma arises in the para-articular tissues, and it can also occur in various unexpected sites. We report a rare case of primary monophasic synovial sarcoma (MSS) arising in the mesentery. A 59-year-old man presented with a palpable abdominal mass. On microscopic examination, the entire tumor comprised a dense proliferation of the spindle cells without epithelial components. The tumor cells were positive for transducin-like enhancer of split 1, bcl-2, epithelial membrane antigen and CD99 but negative for CD34, CD117, alpha-smooth muscle actin, cytokeratin, and calretinin on immunohistochemistry. The reverse transcriptase-polymerase chain reaction revealed a single 151-bp fragment representing the SYT-SSX2 fusion transcript. Because mesenteric MSS is extremely rare and many cases display histologic findings that overlap with those of more frequently involved tumors such as hemangiopericytoma and gastrointestinal stromal tumor, there is a chance of making an incorrect diagnosis that can result in an inappropriate treatment.
Fine-Needle Aspiration Cytology of Pleomorphic Carcinomas of the Lung
최희승,설혜실,허일영,정창원,조수연,박선후,고재수,이승숙 대한병리학회 2012 Journal of Pathology and Translational Medicine Vol.46 No.6
Background: Pleomorphic carcinoma (PC) is a rare pulmonary malignancy. Because of its rarity and histological heterogeneity, cytopathologists might suspect PC only rarely on the basis of its cytological specimen. In addition, cytological findings from fine needle aspiration (FNA) specimens have rarely been described. Hence, we investigated the cytological features of FNA in the cases of PC. Methods: We reviewed 7 FNA specimens of PC. The patients had undergone surgical resection at the Korea Cancer Center Hospital between 2007 and 2011. The cytological features of PC were assessed and compared with the histopathological features of the corresponding surgical specimen. Immunocytochemical analysis with cytokeratin and vimentin was performed on the cell blocks. Results: The tumor cells were either dispersed or arranged in loose aggregates, and generally lacked any glandular or squamous differentiation. Pleomorphic or spindle shape tumor cells were observed, and mono-, bi-, or multi-nucleated giant cells were frequently observed. The background showed necrosis and contained numerous lymphocytes and neutrophils. Immunocytochemically, the tumor cells were positive for cytokeratin and vimentin. Conclusions: PC displays characteristic cytological features. It might therefore be possible to make an accurate diagnosis of PC by assessing the degree of nuclear atypia.
신명순,김정순,하화정,송우택,허일영,최희승,설혜실,조수연,박선후,이승숙,고재수 대한임상병리사협회 2011 조직세포검사학회 발표자료집 Vol.2011 No.-
Background: Sputum cytology using liquid-based cytology (LBC) method is a non-invasive test for evaluating lung cancer. Despite its convenience of screening, its sensitivity is lower than "pick and smear" method in our experience Methods: We compared 210 sputum specimens that were prepared by both usual LBC (UL) and combined "pick and LBC (PL)" preparation Results: The cytologic rates of UL were 2.0% unsatisfactory, 73% normal, 11% atypical, 2.4% suspicious, and 11% malignancy. The rates of PL were 2.0% unsatisfactory, 68% normal, 12% atypical, 4.8% suspicious, and 13% malignancy. The diagnostic sensitivity, relative to the histologic and other available data for 114 primary lung cancer cases, were 25% (UL) and 33% (PL) Conclusion: Sputum cytology using the combination of "pick and LBC" method improves the diagnostic sensitivity for evaluating lung cancer by reducing the false-negative cases