Spontaneous perforation of gallbladder with intrahepatic biloma formation: sonographic signs and correlation with computed tomography*

tion in close contact with the right liver lobe (Figure 1). Also, dilatation of intraand extrahepatic biliary ducts was observed, without determining the site of obstruction. With the diagnostic hypothesis of GB perforation in association with biloma, the patient was submitted to abdominal computed tomography (CT), which confirmed the parietal perforation of the GB and allowed the characterization of the collection as an intrahepatic subcapsular biloma, as well as the visualization of an impacted calculus in the duodenal papilla (Figure 2). The patient underwent open cholecystectomy with biloma drainage, and later retrograde endoscopic cholangiopancreatography, with removal of an impacted calculus located in the major duodenal papilla. The patient progressed favorably and was asymptomatic at discharge one week after his admission.