caa a22 4500 475842693 CHVBK 20180406123905.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1007/s101400050101 doi (NATIONALLICENCE)springer-10.1007/s101400050101 Radiographically occult ureteral calculi in an HIV-positive child undergoing indinavir therapy [Elektronische Daten] [H. L. Zinn, R. J. Orentlicher, J. O. Haller, H. L. Cohen] Helical CT has been shown to be a sensitive and specific tool for the rapid diagnosis of obstructing urinary tract calculi. AIDS patients taking the protease inhibitor indinavir, however, can develop urinary tract calculi that are invisible on CT. We present a case of a 9-year-old HIV-positive girl who developed acute ureteral obstruction while taking indinavir. Helical CT after the administration of intravenous contrast demonstrated signs of ureteral obstruction although no obstructing calculus was visualized. This case demonstrates that obstructing ureteral calculi secondary to indinavir therapy may not be visualized with helical CT, unlike nearly all other obstructing calculi. When secondary signs of obstruction are seen in these patients, the radiologist must have a high index of suspicion for urinary tract calculi even without direct visualization of a stone. American Society of Emergency Radiology, 2000 Key words Indinavir - Crixivan - Ureteral obstruction - HIV - Computed tomography nationallicence Zinn H. L. Department of Radiology, SUNY-Health Science Center at Brooklyn, 450 Clarkson Avenue, Box 1208, Brooklyn, NY 11203, USA Tel.: + 1-7 18-2 70 16 03, Fax: + 1-7 18-2 70 26 67, US aut Orentlicher R. J. Department of Radiology, SUNY-Health Science Center at Brooklyn, 450 Clarkson Avenue, Box 1208, Brooklyn, NY 11203, USA Tel.: + 1-7 18-2 70 16 03, Fax: + 1-7 18-2 70 26 67, US aut Haller J. O. Department of Radiology, Beth Israel Medical Center, New York, NY, USA, IL aut Cohen H. L. Department of Radiology, SUNY-Health Science Center at Brooklyn, 450 Clarkson Avenue, Box 1208, Brooklyn, NY 11203, USA Tel.: + 1-7 18-2 70 16 03, Fax: + 1-7 18-2 70 26 67, US aut https://doi.org/10.1007/s101400050101 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s101400050101 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zinn H. L. Department of Radiology, SUNY-Health Science Center at Brooklyn, 450 Clarkson Avenue, Box 1208, Brooklyn, NY 11203, USA Tel.: + 1-7 18-2 70 16 03, Fax: + 1-7 18-2 70 26 67, US aut NATIONALLICENCE 700 1- Orentlicher R. J. Department of Radiology, SUNY-Health Science Center at Brooklyn, 450 Clarkson Avenue, Box 1208, Brooklyn, NY 11203, USA Tel.: + 1-7 18-2 70 16 03, Fax: + 1-7 18-2 70 26 67, US aut NATIONALLICENCE 700 1- Haller J. O. Department of Radiology, Beth Israel Medical Center, New York, NY, USA, IL aut NATIONALLICENCE 700 1- Cohen H. L. Department of Radiology, SUNY-Health Science Center at Brooklyn, 450 Clarkson Avenue, Box 1208, Brooklyn, NY 11203, USA Tel.: + 1-7 18-2 70 16 03, Fax: + 1-7 18-2 70 26 67, US aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer