The rare anomaly, multiseptate gallbladder, consists of a gallbladder divided into a variable number of chambers, each communicating through one or more orifices with other chambers, progressing from the fundus toward the cystic duct. Each chamber is lined by mucosa with an underlying muscular coat. The latter may or may not contain Rokitansky-Aschoff sinuses as well as secondary depositions of mesothelial structures. This anomaly appears to arise from a persistence of a folding mechanism during the embryonic stage in the formation of the gallbladder.
Our patient was older than those previously reported and the clinical manifestation was probably secondary to concurrent calculus formation, a combination also previously not described.