Sonography of polypoid cholesterolosis

Small Polypoid Lesions of the Gallbladder

“…3,4 Relatively large cholesterol polyps have an irregular surface that gives a mulberrylike appearance. However, some cholesterol polyps appear partially or completely echopenic on US, which often makes them difficult to distinguish from adenocarcinoma.…”

Ectopic hypoplastic and multiseptate gallbladder with coexisting choledochal cyst: Evaluation with sonography and magnetic resonance cholangiopancreaticography

“…17 Desquamated mucosa occurs as a complication of acute cholecystitis and involves a partially separated necrotic mucosa from the wall that has folded into the lumen. 16 A polypoid appearance of the cholesterolosis may be similar to that of multiseptate gallbladder.…”

“…However, the nonshadowing polypoid structures in this entity are more rounded and nodular, and there are no septa within the gallbladder. 17 A hydatid cyst should also be considered in the differential diagnosis of multiseptate ectopic gallbladder. In our case, the characteristic location and appearance of the cystic duct and postprandial contraction of the gallbladder helped us to rule out these 3 entities.…”

Differential diagnosis of large-sized pedunculated polypoid lesions of the gallbladder by endoscopic ultrasonography: a prospective study

“…13,14 US is effective for the detection of polypoid lesions of the gallbladder. [15][16][17] It is known that the internal echo pattern of a cholesterol polyp shown by US is an accumulation of hyperechoic spotty echoes, whereas the internal echo pattern of a neoplasm, including carcinoma, is solid. However, because large cholesterol polyps sometimes show a solid internal echo pattern, differential diagnosis based on the internal echo pattern can lead to over-diagnosis.…”