We describe a juvenile granulosa cell tumor expressed by an early pseudopuberty occurring in a 3-year-old black child. Clinically, an endocrine syndrome was associated with a pelvic mass and ascites. Hyperoestrogenia and serum alphafetoprotein level were biologically detected. Histological examination showed typical microscopic features of a granulosa cell tumor. The patient is well four years after surgery. Growth and mental development are normal.

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