Transvaginal ultrasonography in the diagnosis of primary ovarian pregnancy: case report.

This case report describes the sonographic appearance of an ovarian pregnancy; at 7 weeks of gestation, transvaginal ultrasonography revealed an enlarged left ovary containing the gestational sac, yolk sac, and embryonic structures without heart activity. High-frequency transvaginal ultra-sound examination proved a useful diagnostic tool in this case of ovarian pregnancy.