Spontaneous biloma in an elderly patient.

A previously well 84 year old man without prior history of abdominal trauma, instrumentation or surgery presented with localized biliary peritonitis (biloma). An associated bile duct stone was detected by abdominal ultrasound and endoscopic retrograde cholangiopancreatography and was successfully treated with systemic antibiotics and percutaneous and endoscopic stenting. The case is unusual in that the presentation was spontaneous.