Peritoneal leiomyomatosis

*Exceedingly rare benign disorder

Multiple vascular leiomyomas growing along the submesothelial tissues of the abdominopelvic peritoneum

*Strong influence of hormonal factors

Pregnancy, long-term use of oral contraceptives, and, occasionally, granulosa cell tumors of the ovary

Rarely in men in whom no excess of hormones was identifiable

In postmenopausal women

*US, CT findings

Multiple solid subcentimetric nodules like those in peritoneal carcinomatosis to large solid masses

Homogeneous or heterogeneous attenuation with a variable enhancement pattern similar to that of uterine leiomyomas

*MR findings

Signal intensity similar to that of skeletal muscle and smooth muscle on both T1- and T2-weighted images 

Homogeneous enhancement following the administration of contrast material