UTERINE CHORIONIC CARCINOMA AFTER TERM PREGNANCY - IMAGING WITH TRANSVAGINAL COLOR DOPPLER SONOGRAPHY

A 29 year-old woman presented with continuous metrorrhagia and a posit ive pregnancy test 3 1/2 months after vaginal birth. Transvaginal sono graphy showed a 3.5 x 4 x 4 cm mostly echogenic uterine mass with diff use myometrial invasion in the Fight fundal region. Colour Doppler son ography revealed extensive low impedance flow in the periphery of the mass suggestive of a trophoblastic tumor. Histological examination of curettage specimens revealed a chorionic carcinoma. The tumor size as measured by magnetic resonance imaging correlated well with that by so nography. Trophoblastic disease after a normal pregnancy is rare. Earl y diagnosis can be facilitated by transvaginal colour Doppler sonograp hy.