Rhabdomyomatous mesenchymal hamartoma associated with congenital anomalies: Report of an unusual perineal case

The ectopic occurrence of skeletal muscles in skin is an unusual condition. These lesions are named rhabdomyomatous mesenchymal hamartoma now. More accurately speaking, this entity should be called "cutaneous rhabdomyomatous choristoma" because the skeletal muscle is not a normal element in skin. We described a case occurring in perineal region associated with amniotic band syndrome, imperforate anus, and intestinal atresia. The association with gastrointestinal tract anomaly has not been reported previously. This unusual case is documented and compared to two other cases reported in this region.