Three cases of placental site trophoblast tumor (PSTT) are added to 74 cases in the English language literature. One case presented with an anorexic syndrome, the other two with amenorrhea and abnormal vaginal bleeding. The three patients, whose lesions were confined to the uterus, were treated by total hysterectomy and their follow-up has been uneventful. Review of the literature showed that 62 patients with PSTT were alive and 15 had died, two as a complication of treatment. The diagnosis of PSTT may be difficult on a dilatation and currettage specimen. Metastases are a powerful indicator of adverse outcome. Prognosis, as assessed on pathologic criteria, is unreliable; however, a mitotic count of more than five mitoses per 10 high power fields is significant. Surgery is the mainstay of treatment. Hysterectomy is generally indicated, but young patients who wish to remain fertile may be treated by conservative surgery. In a few cases of progressive disease, chemotherapy has achieved remission, but generally chemotherapy and radiotherapy are ineffective. Long-term follow-up is essential as PSTT may progress after years of remission. Serum human chorionic gonadotrophin (hCG) levels are the best available marker of disease, but the disease may still progress even if hCG levels are not raised.
- placental site trophoblastic tumor.
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