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Thecoma
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Thecoma | |
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High magnification micrograph of a thecoma. H&E stain. | |
Specialty |
Oncology ![]() |
Thecomas or theca cell tumors are benign ovarian neoplasms composed only of theca cells. Histogenetically they are classified as sex cord-stromal tumours.
They are typically estrogen-producing and they occur in older women (mean age 59; 84% after menopause). (They can, however, appear before menopause.)
60% of patients present with abnormal uterine bleeding, and 20% have endometrial carcinoma.
Pathologic features
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/13/Thecoma_low_mag.jpg/220px-Thecoma_low_mag.jpg)
Low magnification micrograph of a thecoma showing compression of the ovarian cortex (right of image). H&E stain.
Grossly, the tumour is solid and yellow.
Grossly and microscopically, it consists of the ovarian cortex.
Microscopically, the tumour cells have abundant lipid-filled cytoplasm.