Necrotizing fasciitis: two cases in a single family.

A large area of necrotic skin and fat was excised. This procedure was complicated by the rapid onset of septic shock necessitating admission to the intensive care unit. Further debridement was necessary on the third post-operative day and panproctocolectomy was carried out on the following day. At laparotomy there was no evidence of perforation or abscess formation. Ventilation, inotropic support and antibiotic therapy were required for two weeks. Necrotic tissue from the perineum grew Bacteroides spp.