Abstract
A 23-year-old woman was referred to our hospital because of suspected acute appendicitis. An enhanced CT scan revealed a solid tumor, 11 cm in diameter, without enhancement in the pelvis. Ultrasonography revealed a well-defined, homogeneous, solid tumor, 11 cm in diameter. The tumor was of equal intensity to muscle on T1-weighted MR imaging and low intensity on T2-weighted imaging.
The patient was admitted for intensive examination and treatment. On the day after admission, the abdominal pain increased, and emergency surgery was performed. The preoperative diagnosis was a tumor of the mesentery. The tumor with two twisted vascular pedicles was in the pelvis and excised. On macroscopic examination, the tumor was 14 cm × 11 cm and red inside. Microscopically, it contained congestive splenic tissue. The final diagnosis was torsion of an accessory spleen.
Torsion of an accessory spleen is rare, and this case is presented with a review of the literature.
