Masks of kidney tuberculosis                E. Kulchavenya,                E. Brizhatyuk, D. Kholtobin                 Nov...
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Masks

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Masks

  1. 1. Masks of kidney tuberculosis E. Kulchavenya, E. Brizhatyuk, D. Kholtobin Novosibirsk, Russia, e-mail: ku_ekaterina@mail.ruIntroduction. The main reason for late diagnosis of UGTB is anatypical clinical feature of UGTB, it courses under the mask ofanother disease.Material & Methods: We analyzed 816 history cases of UGTBpatients to estimate clinical features.Results: Most common complains were flank pain (68%),dysuria (48%) and renal colic (24%); among laboratory signs -pyuria (78%) and haematuria (34%). Patients were treated byurologists or GPs with misdiagnoses of pyelonephritis (27%),cystitis (43%), cancer (8%) or urolithiasis (22%) during 5.6 yearson average. Positive smear was in 17% and positive culture ofMycobacterium tuberculosis was in 44%. 64% were diagnosed inlate complicated cavernous stage, when surgery is necessary –and 90% of operations were nephrectomy due to totalinvolvement of kidney tissue.Conclusions: Most common masks of UGTB are pyelonephritis,cystitis and urolithiasis. UGTB presents non-specific symptomsand laboratory findings, except for positive MBT culture, butonly about 44% cases are culture-positive. This is one of themain reasons for late and poor diagnosis of UGTB. Thesignificance of UGTB may be considerable when the highprevalence of overall TB and the asymptomatic nature of UGTBare taken into account.

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