A 64-year-old male patient was reported, surveying radiology and pathology of the adenomyomatosis. The authors emphasize the role of high resolution ultrasound and computer tomography in the diagnosis of gallbladder adenomyomatosis. Intramural cystic formation (anechoic diverticula) with echogenic foci and/or reverberation artifacts together with a full or a partial thickening of the gallbladder's wall was considered as the diagnostic criteria of the ultrasound examinations. They assist in finding the proper way among the difficulties of the different diagnosis, in the same time call the attention for the frequently misdiagnosed cases.