Clinicopathologic study of uterine endometrial carcinoma in young women aged 40 years and younger.

To clarify what constitutes the adequate management of uterine endometrial carcinoma in young women, we reviewed clinicopathologically 31 patients aged 40 years and younger between January 1991 and June 2004. As a primary treatment, 12 cases chose hormonal treatment with medroxyprogesterone acetate (MPA; 600 mg/day) due to no findings of myometrial invasion and diagnosis of a grade 1, well-differentiated adenocarcinoma. In remaining 19 cases, surgery was performed. All the 19 patients who received surgery as a primary treatment are alive, with no evidence of a recurrence of the disease. In the 12 patients who received hormonal treatment, 8 patients eventually received a hysterectomy because of recurrence or no response to MPA. Of these eight patients, myometrial invasion was recognized in three patients. One of the eight patients died of the metastasized disease to the liver and brain after hysterectomy. After hormonal treatment, 4 of the 12 patients were exempted from surgery and showed no evidence of recurrence. Two patients had viable children. Progesterone receptor was negative in one case that died. Careful consideration should be given to hormonal treatment with MPA for the conservative management of endometrial carcinoma in young women. Moreover, MPA is not always a consistent management for every patient.