[Spontaneous external biliary fistula].

Spontaneous biliary cutaneous fistula is a rare complication of inflammatory perforation of the gallbladder. We describe a 70-year-old woman who developed a fistula between the gallbladder and the skin following drainage of an abdominal wall abscess. In such cases primary drainage of the abscess alone is advisable. Only after the active infection has subsided should definitive cholecystectomy and excision of the fistulous tract be carried out.