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Radiology, Vol 191, 769-772, Copyright © 1994 by Radiological Society of North America
ARTICLES |
MC Frates, DL Brown, PM Doubilet and MD Hornstein
Department of Radiology, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115.
PURPOSE: To determine whether sonography can help diagnose tubal rupture in patients with ectopic pregnancy. MATERIALS AND METHODS: The authors reviewed the transvaginal ultrasound (US) scans and medical records of 132 consecutive patients with tubal pregnancy confirmed at surgery performed within 24 hours of undergoing US. RESULTS: Adnexal masses were seen in 93 patients at US. Thirty-four patients had a tubal ring, and 59 had a complex mass. The frequency of tubal rupture was similar for both groups. The adnexal mass was significantly smaller in patients without a ruptured tube, but there was considerable overlap. Rupture was present in 21% of patients with no sign of or a trace of intraperitoneal fluid, increasing steadily to 63% in patients with a large amount of free fluid. Even though the amount of fluid was the best predictor of rupture, it was not completely reliable, as 37% of patients in whom a large amount of fluid was found had intact tubes. CONCLUSION: No finding at transvaginal US is a reliable indicator of rupture. Contrary to findings from previous studies, the appearance of the adnexal mass, if present, is not related to tubal rupture.
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