Placental site trophoblastic tumor.

Placental site trophoblastic tumor is very rare. It is a gestational trophoblastic neoplasm which follows normal or molar pregnancy. It is usually confined to uterus & 15-20% behave in a malignant fashion. Clinically patients present with abnormal excessive bleeding or amenorrhoea. Though several trophoblastic lesions & tumors enter in the differential diagnosis, microscopically the diagnosis is usually straightforward in hysterectomy specimens. Hysterectomy is the treatment with or without chemotherapy. Progress after surgery should be monitored by placental lactogenic hormone.