ADENOMYOSIS - PROSPECTIVE COMPARISON OF MR-IMAGING AND TRANSVAGINAL SONOGRAPHY

PURPOSE To prospectively compare conventional spin-echo magnetic reson ance (MR) imaging and transvaginal sonography for the diagnosis of ade nomyosis. MATERIALS AND METHODS: Twenty women with clinically suspecte d adenomyosis underwent MR imaging and transvaginal sonography perform ed within 3 months of each other. Pathologic proof was obtained in all eases. RESULTS: Seventeen patients were proved to have adenomyosis. T he correct diagnosis was achieved with MR imaging in 15 of 17 cases. O ne false-positive and two false-negative diagnoses were made with MR i maging. With transvaginal sonography, nine of 17 cases of adenomyosis were correctly diagnosed. One false-positive and eight false-negative diagnoses occurred. The most frequent cause of false-negative diagnose s with transvaginal sonography was the misinterpretation of adenomyosi s as leiomyomas (seven cases). CONCLUSION: MR imaging is significantly better (P < .02) than transvaginal sonography in the diagnosis of ade nomyosis.