Multimodality Imaging of Congenital Variants in the Gallbladder: Pictorial Essay

Abstract

Abstract: Congenital variants of the gallbladder development are infre- quent and sometimes represent an asymptomatic imaging finding. In this case series, we want to present multimodality imaging findings that permit the diagnosis. Ultrasound, multidetector computed tomography, and magnetic resonance images are included. The proper recognition of these infrequent congenital benign entities avoids unnecessary complementary examinations and misdiagnosis. Although ultrasound represents the most commonly used initial diag- nostic tool, the increased use of magnetic resonance imaging and the wide use of multidetector computed tomography make it crucial to know how these entities are seen. A retrospective review of cases of congenital variants of gallbladder through different imaging modalities was performed in our com- puter archives. Representative images were selected. Agenesis, hy-poplasia, septated, duplicated, intrahepatic, and left-sided gallbladder are described. Better understanding and recognition of congenital anomalies in gall-bladder images will avoid misdiagnosis.