Nodular lesions in renal tuberculosis.
We retrospectively studied the CT findings of renal tuberculosis in 27 cases (32 kidneys). As a characteristic CT finding, nodular lesions were recognized in 20 kidneys. Low density nodules were found in three kidneys, isodensity nodules in seven, and high density nodules in 10. In a case examined by follow-up five years later, the low and isodensity nodules changed to high density nodules with decreasing volume. Ultrasound demonstrated the high density nodules as low-echo mass lesions. These nodular lesions corresponded with the localized foci in the renal parencyma and/or pyocalyx. We consider that the density differences in nodular lesions reflect the process of water absorption from the caseous necrotizing materials of tuberculosis.
Mizunuma
K
K
Department of Radiology, Jikei University School of Medicine, Japan.
Toyoda
K
K
Tada
S
S
Kaneko
K
K
Yamaguchi
M
M
D000042:Absorption; D000328:Adult; D000368:Aged; D001834:Body Water / Q000378:metabolism; D002114:Calcinosis / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000378:metabolism; D007670:Kidney Calices / Q000000981:diagnostic imaging; D007682:Kidney Pelvis / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014398:Tuberculosis, Renal / Q000000981:diagnostic imaging* / Q000378:metabolism; D014463:Ultrasonography; D014515:Ureteral Diseases / Q000000981:diagnostic imaging / Q000382:microbiology