Journal of Pathology and Translational Medicine

Original Article

Fine Needle Aspiration Cytology of Parathyroid Lesions: Ilyeong Heo, Sunhoo Park, Chang Won Jung, Jae Soo Koh, Seung-Sook Lee, Hyesil Seol, Hee Seung Choi, Soo Youn Cho; Korean J Pathol. 2013;47(5):466-471. Published online October 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.5.466

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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.

Citations

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Case Study

Rhabdoid Colorectal Carcinomas: Reports of Two Cases: Sang Hwa Lee, Hyesil Seol, Wook Youn Kim, So Dug Lim, Wan Seop Kim, Tae Sook Hwang, Hye Seung Han; Korean J Pathol. 2013;47(4):372-377. Published online August 26, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.4.372

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Abstract PDF

Rhabdoid colorectal carcinomas are very rare and only 10 cases have been previously reported. We report two cases of rhabdoid colorectal carcinoma, one arising in the sigmoid colon of a 62-year-old man and another in the rectum of an 83-year-old woman. In both cases, the patients had advanced tumors with lymph node metastases. The tumors mostly showed a diffuse arrangement with rhabdoid features and small glandular regions were combined. Transitional areas from the adenocarcinomas to the rhabdoid tumors were also noted. Adenocarcinoma cells were positive for mixed cytokeratin (CK), CK20 and epithelial membranous antigen (EMA), but focal positive for vimentin. The rhabdoid tumor cells were positive for mixed CK, but focal positive or negative for CK20 and EMA. In addition, they were diffusely positive for vimentin, but negative for desmin. The histological and immunohistologial findings of these two cases suggest that the rhabodid tumor cells originated from dedifferentiated adenocarcinomas.

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A Rare Case of Undifferentiated Rhabdoid Carcinoma of the Colon
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Cureus.2022;[Epub] CrossRef
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Original Article

Fine-Needle Aspiration Cytology of Pleomorphic Carcinomas of the Lung: Hee Seung Choi, Hyesil Seol, Il Yeong Heo, Chang Won Jung, Soo Youn Cho, Sunhoo Park, Jae Soo Koh, Seung-Sook Lee; Korean J Pathol. 2012;46(6):576-582. Published online December 26, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.6.576

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Abstract PDF

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.

Citations

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Sarcomatoid carcinoma in cytology: Report of a rare entity presenting in pleural and pericardial fluid preparations
Atreyee Basu, Andre L. Moreira, Anthony Simms, Tamar C. Brandler
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Cytological Evaluation of Pleomorphic Carcinoma of the Lung
Kevin Kuan, Samer N. Khader, Siba El Hussein
Diagnostic Cytopathology.2019; 47(9): 961. CrossRef
Combined small cell carcinoma with giant cell carcinoma component of the lung: A case successfully diagnosed by computed tomography‑guided fine‑needle aspiration cytology
Yusuke Ebisu, Mitsuaki Ishida, Tomohito Saito, Tomohiro Murakawa, Yoshiko Uemura, Koji Tsuta
Oncology Letters.2017;[Epub] CrossRef
Pulmonary Pleomorphic Carcinoma Detected as a Result of Pneumothorax and the Subsequent Occurrence of Multiple Cystic Metastases
Hideaki Yamakawa, Masahiro Yoshida, Masami Yabe, Yuri Baba, Emiri Baba, Hiroaki Katagi, Takeo Ishikawa, Masamichi Takagi, Takeo Nakada, Tadashi Akiba, Kazuyoshi Kuwano
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PENG-FEI LI, CHENG-HSIANG LO, SHAN-HAN YANG, PING-YING CHUNG, CHING-LIANG HO
Oncology Letters.2014; 7(2): 452. CrossRef

Case Report

Invasive Cribriform Carcinoma Arising in Malignant Phyllodes Tumor of Breast: A Case Report: Yoomi Choi, Kyoung Yul Lee, Min Hye Jang, Hyesil Seol, Sung-Won Kim, So Yeon Park; Korean J Pathol. 2012;46(2):205-209. Published online April 25, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.2.205

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Abstract PDF

Phyllodes tumor is an uncommon fibroepithelial neoplasm of the breast. And it is characterized by expanded stroma with increased cellularity and elongated epithelium-lined clefts. Mammary carcinomas within phyllodes tumors have been rarely reported. To date, however, no reports have described the invasive cribriform carcinoma arising in malignant phyllodes tumor. Here, we report a 62-year-old woman who presented with a large breast mass. Microscopically, the mass was a typical malignant phyllodes tumor showing well developed leaf-like architecture and stromal overgrowth with high cellularity and nuclear pleomorphism. In a portion of the tumor, however, the epithelial component showed a cribriform pattern of proliferation in the absence of myoepithelial cells, suggestive of the invasive cribriform carcinoma. To our knowledge, this is rare and it is difficult to make a differential diagnosis of it. Here, we report our case with a review of literatures.

Citations

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High-grade ductal carcinoma in-situ detected by microcalcification within borderline phyllodes tumor: Report of a case and literature review
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Original Articles

Cancer Subtypes of Breast Carcinoma with Micropapillary and Mucinous Component Based on Immunohistochemical Profile.: Sun Young Min, Eun Jung Jung, Hyesil Seol, In Ae Park; Korean J Pathol. 2011;45(2):125-131.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.2.125

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Abstract PDF

BACKGROUND
Micropapillary carcinoma (MPC) is known to have a worse prognosis than the other subtypes of breast cancer. Occasionally, MPC is observed in association with invasive ductal carcinoma not otherwise specified (IDC NOS), as well as mucinous carcinoma.
METHODS
We examined the immunohistochemical expression of an estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 (HER2) in 127 cases of surgically resected MPC or IDC NOS with MPC. Further, we classified these cases based on their immunohistochemical profile.
RESULTS
Among the IDC NOS with MPC cases, 47 were luminal A (62.7%), 10 were luminal B (13.3%), and 9 were HER2 (12.0%). The MPC cases included 4 luminal A (50.0%), 2 luminal B (25.0%) and 1 HER2 (12.5%) subtypes. Of the mucinous carcinomas with MPC, 4 were grouped as luminal A (57.1%), 1 as luminal B (14.3%), and 2 as HER2 (28.6%) subtypes. However, among the mucinous carcinomas, 33 were categorized as luminal A (89.2%), 3 as luminal B (8.1%), and 1 as HER2 (2.7%) subtype, indicating a low incidence of HER2 subtype as compared to the other subtypes.
CONCLUSIONS
The luminal B and HER2 subtypes were prevalent in carcinomas with MPC. This result explains the poor prognosis of breast carcinomas with an MPC pattern.

Citations

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Investigation of Clinical Histopathologic Features and Metabolic Parameters of ¹⁸F-FDG PET/CT in Invasive Breast Carcinoma with a Micropapillary Component
Elife Akgün, Göksel Alçın, Esra Canan Kelten Talu, Tevfik Fikret Çermik, Tuçe Söylemez Akkurt, Ebru Şen, Esra Arslan
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Histological and Immunohistochemical Evaluation of Ductal Carcinoma In Situ Co-Existing with Triple-Negative Carcinoma of the Breast.: Hyesil Seol, Hyoungsuk Ko, In Ae Park; Korean J Pathol. 2008;42(6):373-380.

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Abstract PDF: BACKGROUND
Triple-negative breast carcinomas (TNBCs) are associated with high-grade histological tumor and a poor clinical outcome. In this study, we evaluated the histology and immunohistochemical features of DCIS co-existing with TNBC to determine the characteristics of the precursor lesions of TNBC. METHODS: Among the 1,610 cases of breast carcinoma, we selected the TNBCs with DCIS (n=196), and compared the pathological and immunohistochemical findings of the DCIS with those of the invasive carcinoma areas.
RESULTS
Among the 1,610 breast carcinomas, the TNBCs accounted for 330 cases (20.5%) and there were 196 cases with DCIS. The TN-DCIS cases exhibited high nuclear (94.5%) and histological (94.5%) grades, comedo-necrosis (68.9%) and a small extent of the DCIS-involved area. Immunohistochemically, a p53 expression was present in 48.4% of the TN-DCIS cases and a high Ki-67 index was present in 31.5%. The same TN immunohistochemical profiles as the carcinoma were detected in 109 of the 124 (87.9%) cases, but different profiles were observed in 15 of the 124 (12.1%) cases. The 15 discordant cases were associated with a low histological grade (p=0.037), low p53-positivity (p=0.006) and a low Ki-67 index (p=0.026), as compared to the invasive carcinomas. CONCLUSIONS: The results of this study suggest that TN DCIS is a highly probable, but not obligate, precursor lesion of TNBC.

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