An elderly woman with a mediastinal granulosa cell tumour: a rare presentation

Background Granulosa cell tumors (GCTs) are uncommon sex cord-stromal ovarian neoplasms. We report a case of GCT presenting in the chest, 18 years after oophorectomy for ovarian cystadenocarcinoma. Case presentation A 63-year-old female was admitted to our hospital for evaluation of a right hilar lesion. Subsequent abdominal and pelvic computed tomography and brain magnetic resonance imaging were unremarkable. Eighteen years earlier, the patient had undergone total abdominal hysterectomy with bilateral salpingo-oophorectomy at another institution for a uterine myoma, with the pathological findings indicating a uterine myoma, dermoid cyst of the right ovary, and serous cystadenocarcinoma and endometrioid adenoacanthofibroma around hemorrhagic cyst of the left ovary. No indication of a granulosa cell tumor (GCT) was present in either ovary. As such, diagnostic video-assisted thoracoscopic surgery was performed, revealing a well encapsulated tumor located next to the inferior pulmonary vein and small, disseminated lesions on the chest wall and diaphragm. Thereafter, we performed resection of the main tumor in its entirety and the disseminated lesions to the extent possible. Pathological examination of the resected specimens revealed a neoplasm characterized by sheets and islands of closely packed tumor cells exhibiting small follicles (Call-Exner bodies) surrounded by cells with pale, uniform nuclei, typically observed in the microfollicular pattern of adult GCT. Although the etiology of occurrence of intrathoracic granulosa cell tumor is unknown, we assumed that the neoplasm oriented from radiologically undetectable peritoneal seeding at the time of her previous surgery, with subsequent migration through the diaphragm. Over the next 10 years, she received chemotherapy with cyclophosphamide, adriamycin, and cisplatin; other combination chemotherapy; single-agent chemotherapy; and palliative radiotherapy. She died from malignant pleuritis and peritonitis 10 years after thoracoscopic surgery. Conclusions We have reported a case of a 63-year-old female with a history of ovarian cystadenocarcinoma who underwent resection of a pleural neoplasm, which turned out to be a granulosa cell tumor. This possibility resulted from dissemination of a previous abdominal lesion.

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A case of adult granulosa cell tumor presenting as thoracic lesions

Suzuki

Kitami

Okada

et al. 2023

Gen Thorac Cardiovasc Surg Cases

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An elderly woman with a mediastinal granulosa cell tumour: a rare presentation

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A case of adult granulosa cell tumor presenting as thoracic lesions

A case of adult granulosa cell tumor presenting as thoracic lesions

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