Postmenopausal bleeding resulting from placental site trophoblastic tumor of the uterus: a case report.

BACKGROUND

Placental site trophoblastic tumor (PSTT) is the least common form of gestational trophoblastic disease. Occurrence of PSTT after menopause is extremely rare.

CASE

A 53-year-old woman complained of postmenopausal bleeding 6 years after cessation of her menstrual periods. On dilatation and curettage and on hysterectomy and bilateral salpingo-oophorectomy later, PSTT was found in the uterus with myometrial invasion and no metastasis. Serum human chorionic gonadotropin levels before and after the operation were 15 and < 1 IU/mL, respectively. Hysterectomy was performed.

CONCLUSION

Because of PSTT's rarity, limited information is known about its natural history, and there is no reliable means to predict clinical outcome. Thus, patients must be evaluated on a case-by-case basis.