CT diagnosis of renal tuberculosis

Objective:To evaluate CT features and differential diagnosis in renal tuberculosis. Methods: CT findings of 26 cases with renal tuberculosis were confirmed by operation and pathology or other auxiliary checking methods and follow-up were analyzed retrospectively. Results: 26 cases of renal tuberculosis are all belong to clinical type. The study suggested the renal tuberculosis could show different CT fingings with different manifestations of pathology. The characteristic CT features of renal tuberculosis were the multiple cystoid low density area gathering in “flower petals” shape around the pelvis.The other CT features of renal tuberculosis were:the renal corfex became thinner in local area or fiffuse; Thickening of the wall of the renal pelvis or ureter with stricture or dilatation of lumina; there were solid mass or calcification in kidney; enlargement or atrophy of the kidney and functional damage of kidney et al. The late-stage characteristic findings were nonfunctioning kidney and “autonephrectomized”kidney. Conclusion: CT has important value in the diagnosis of renal tuberculosis and it is the best imaging methods for diagnosing the renal tuberculosis.when CT features were uncharacteristic,the key of diagnosis is closely combining with the clinical information and the results of other auxiliary checking.