Abstract: Objective To improve the understanding and diagnostic level of the gallbladder tuberculosis(GT) by analyzing its CT and MRI findings. Methods CT and MRI findings of 5 patients with GT proved by clinical pathology were collected and analyzed.CT scan was performed in 5 cases, including enhanced scan in 2 cases,and both CT scan and MRI scan were carried out in 1 cases. Results CT scan showed that the gallbladder wall was thickened,the density of the cyst was uniform or non-uniform,and the boundary of the gallbladder was clear or vague. The enhancement of the gallbladder wall was slightly enhanced,and the enhancement was seen in the capsule. As to MRI scan, ovoid abnormal signal was noticed in the gallbladder area,central lesions showed slightly short T1 and long T2 signals while surrounded lesions showed strip-like short T1 and short T2 signal,and slightly shorter T1,T2 signals with half ring shape were found in the outer sphere. The features of gallbladder tuberculosis,such as the shape,size,edge,density and signal of the lesion,and the degree of enhancement are helpful for differential diagnosis. Conclusion GT may has some specific CT and MRI characteristics,which facilitate to make a correct preoperative diagnosis,especially combined with relevant clinical data,and provide a theoretical evidence for clinical treatment and prognosis.

Key words: Gallbladder tuberculosis, Mycobacterium tuberculosis, Tomography, X-ray computed, Magnetic resonance imaging