In order to study the prevalence and the clinical features of renal tu
berculosis associated with AIDS, we studied the renal tissue of the ne
cropsies made in 46 AIDS patients under light microscopy. We found ren
al tuberculous granuloma in 11 (23%) patients (in 3 without previous d
iagnosis of renal or extrarenal tuberculosis) and only 4 of them prese
nted moderate hematuria or pyuria sterile. As subclinical renal tuberc
ulosis was frequent in this group of AIDS patients, the urine culture
for Mycobacterium tuberculosis may be useful for diagnosing tuberculos
is in AIDS patients.