The magnetic resonance imaging (MRI) of a patient with congenital blind meg
aureter and mullerian anomaly are presented. A retroperitoneal pelvic mass
appeared as elongated tubular cystic structure spreading from parametrium t
o the adnexa and reaching the recto-sigma. On MRI, the mass was hyperintens
e on T1 and T2-weighted images and disappeared in STIR sequences. The mass
with pseudo-intestinal structure, the retroperitoneal site, and the MRI seq
uences make the differential diagnosis. (C) Elsevier Science Inc., 1999.