NCIt definition : A slow-growing sex cord-stromal tumor characterized by the presence of granulosa-like
cells and Call-Exner bodies. It is almost always found in the ovary and rarely in
the testis. There are two types of granulosa cell tumors: the adult and the juvenile.;
Alternative definition : NCI-GLOSS: A type of slow-growing, malignant tumor that usually affects the ovary.; NICHD: A slow-growing, malignant tumor that is characterized by the presence of granulosa-like
cells, and which is almost always found in the ovary. In rare cases, it has also been
found in the testicle.;