GONADOBLASTOMA: A CLINICOPATHOLOGIC STUDY

Gonadoblastoma is a rare tumor found almost exclusively in patients with an underlying gonadal disorder, and accounts for two-thirds of gonadal tumors in women with abnormal gonadal development. Three cases of gonadoblastoma are reported here. One had Swyer syndrome (pure gonadal dysgenesis) with a 46-XY karyotype, the second patient had a mixed 46-XY and 46-XO karyotype, and the third patient had male pseudohermaphrodism and a 46-XY karyotype. Patients with pure gonadoblastoma have an excellent prognosis, when bilateral excision is performed. Gonadoblastoma may be overgrown by dysgerminoma, however, there is a good prognosis. Gonadoblastoma has never been detected with metastatic lesions. The prognosis for gonadoblastoma, including cases of Swyer syndrome, is good, provided early excision is performed bilaterally.