MedGen

A neoplasm arising in the ovary or testis. It is composed of granulosa cells, Leydig cells, Sertoli cells, and fibroblasts. Each of these cell types may constitute the only cellular component that is present in the neoplasm or it may be mixed with other cell types in various combinations. The prognosis can not always be predicted on histologic grounds alone. Approximately, 10% of these tumors may metastasize. Representative examples include granulosa cell tumor, Leydig cell tumor, Sertoli cell tumor, and tumors of the thecoma-fibroma group. [from NCI]

A tumor (abnormal growth of tissue) of the uterus. [from HPO]

A neoplasm that arises from the uterine corpus or cervix and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential. Representative examples include leiomyoma, adenomyoma, and endocervical polyp. [from NCI]