Primary malignant tumor of the fallopian tube : CT and MR features

To determine the radiologic features of primary malignant tumors of the fallopian tube. By observing six computed tomograms and one MR image, we determined the radiologic features of seven pathologically proven primary malignant tumors of the fallopian tube. The location, size, internal appearances (cystic/mixed/solid) of the tumor were analysed, and the presence or absence of ipsilateral ovary, hydrosalpinx, intrauterine fluid collection, pelvic ascites and lymphadenopathy were determined. All seven tumors were located in unilateral adnexa. Their mean diameter was 3.5 (range, 1.5-6) cm, and their morphological appearance was solid in five cases and mixed in two. In no case were ipsilateral ovaries identified. Hydrosalpinx was noted in four cases (57%) and intrauterine fluid collection in five (71%). Pelvic ascites and lymphadenopathy were each observed in one case (14%). Although it is difficult to differentiate between primary malignant tumors of the fallopian tube and other adnexal tumors, a pelvic mass with hydrosalpinx and intrauterine fluid collection suggests a primary malignant tumor of the fallopian tube