Journal of Pathology and Translational Medicine

Case Study

Spindle cell oncocytoma of the sella turcica with anaplastic features and rapid progression in short-term follow-up: a case report with proposal of distinctive radiologic features: Dong Ja Kim, SangHan Lee, Mee-seon Kim, Jeong-Hyun Hwang, Myong Hun Hahm; J Pathol Transl Med. 2021;55(3):225-229. Published online March 9, 2021; DOI: https://doi.org/10.4132/jptm.2021.01.27

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We present a rare case of spindle cell oncocytoma (SCO) of the sella turcica with malignant histologic features and rapid progression. A 42-year-old woman experienced bilateral blurred vision and was preoperatively misdiagnosed as having a pituitary macroadenoma on magnetic resonance imaging. After surgery, SCO was diagnosed by the histopathologic features of interlacing fascicles of spindle tumor cells with finely granular, eosinophilic cytoplasm. Focal anaplastic changes and necrosis were present. Immunohistochemically, the tumor cells were positive for vimentin, epithelial membrane antigen, S-100, galectin-3, and thyroid transcription factor 1. Four months later, the tumor had progressed, and second surgery with adjuvant radiotherapy was performed; the patients remains under observation. In this report, we proposed distinctive radiologic features for differential diagnosis between SCO and other pituitary tumors.

Citations

Citations to this article as recorded by

Treatment modalities and outcomes of granular cell tumors and spindle cell oncocytomas of the pituitary gland: an analysis of two national cancer databases
A. Yohan Alexander, Giorgos Michalopoulos, Panagiotis Kerezoudis, Jamie J. Van Gompel, Michael J. Link, Maria Peris-Celda
Acta Neurochirurgica.2024;[Epub] CrossRef
Spindle cell oncocytoma, a misdiagnosed rare entity of the pituitary – A case report with review of literature and special emphasis on the morphological differentials
Gittwa Vatsaraj Kottangal, Lilly Madhavan, Shalini Kuruvilla, Kavitha Kanjirakadu Parameswaran, Shehla Basheer Kollathodi
Indian Journal of Pathology and Oncology.2021; 8(4): 533. CrossRef

Case Report

Adrenocortical Oncocytoma: A case report.: Hee Joung Cha, Yeon Lim Suh, Jung Hyun Yang; Korean J Pathol. 1999;33(6):463-466.

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Abstract PDF: Adrenal gland is a rare location for an oncocytic neoplasm. In English literature less than 10 cases of adrenocortical oncocytoma have been reported. We have experienced a case of adrenocortical oncocytoma in a 35-year-old man which was detected incidentally during the ultra-sonographic evaluation of the abdomen for a routine physical examination. This case did not demonstrate any clinical evidence of adrenocortical abnomalities, such as virilization or hypertension. Grossly, the tumor was light to dark tan on cut surface. Light-microscopic examination revealed tumor cells with abundant lipid- sparse eosinophilic cytoplasm and occasional pleomorphic nuclei. Mitotic figures were less than 5/50 HPFs. Tumor cells were positive for vimentin but negative for pancytokeratin, CAM 5.2, chromogranin and synaptophysin. Ultrastructural examination demonstrated abundant mitochondria containing occasional intramitochondrial dense bodies or inclusions.

Original Article

Cytologic Features of Renal Cell Carcinoma: Clear Cell, Granular Cell and Oncocytoma.: Yeong Jin Choi, Youn Soo Lee, Mi Seon Kwon, Kyo Young Lee, Byung Kee Kim, Sang In Shim; Korean J Cytopathol. 1996;7(1):31-37.

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Abstract PDF: It is well known that fine needle aspiration biopsy(FNAB) is very useful and has a high accuracy rate in the diagnosis of renal neoplasms. Although there is some indecision to perform the FNAB for a rare possibility of tumor seeding along the biopsy needle tract, it tends to be used increasingly. As in the cytologic diagnosis of metastatic lesion through out the body, renal cell carcinoma should nearly always be considered in the differential diagnosis, the precise understainding of cytologic features of renal cell carcinoma with various cell types and architectural patterns is necessarily required. In this report, we present three cases of primary renal cell tumors, two of renal cell carcinomas and one of oncocytoma, preponderantly emphasizing the cytologic differential points in the FNAB specimen.

Case Report

Adrenocortical Oncocytoma: A Case Report.: Hun Soo Kim, Dae Young Kang; Korean J Pathol. 2007;41(5):329-333.

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Abstract PDF: Adrenocortical oncocytomas have rarely been reported on in the medical literature, and most of them have been nonfunctional and benign. We report here on a case of a 43-year-old man with a left abdominal mass. The patient showed no signs of hypertension or hormonal imbalance. The abdominal CT scans showed a huge mass that measured 11 cm in diameter, and it was located at the left adrenal area. Grossly, the tumor was well encapsulated and homogenous with central necrosis. Microscopically, the tumor was composed of oncocytes with abundant granular cytoplasm. Immunohistochemically, these cells were diffusely positive for cytokeratin and focally positive for synaptophysin and NSE. The ultrastructural studies showed numerous mitochondria in the cytoplasm. We will discuss the criteria that indicates malignancy as presented by Weiss et al. and we summarize the difference between conventional and oncocytic adrenocortical neoplasm. This case showed some features of malignancy based on the criteria presented by Weiss et al.

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