Pyourachus: CT manifestations.

OBJECTIVE

To assess CT findings of pyourachus.

MATERIALS AND METHODS

Computed tomography of two patients with surgically proven pyourachus was reviewed.

RESULTS

The CT characteristics of pyourachus include (a) midline location deep to the rectus abdominis muscle; (b) conical shape extending from a tip at the umbilicus to a base over the bladder dome; (c) peripheral inflammatory changes in subcutaneous tissues, rectus abdominis muscle, and mesenteric fat; and (d) intraperitoneal fluid or abscess (if perforation has occurred).

CONCLUSION

Abdominal CT demonstrates characteristic findings in pyourachus that should allow differentiation from other abdominal-pelvic masses.