Medical condition
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.[ 1] )
60% of patients present with abnormal uterine bleeding , and 20% have endometrial carcinoma .
Pathologic features
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 .
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