First case of acute granulomatous interstitial nephritis with immune reconstitution inflammatory syndrome in a patient with HIV coinfected with disseminated Mycobacterium kansasii

Restoration of immune response by highly active antiretroviral therapy (HAART) effectively improved the overall prognosis of HIV infection. However, 25%–31.7% of patients experience paradoxical worsening of pre-existing infections or unmasking of subclinical infections after starting HAART therapy, which is termed as immune reconstitution inflammatory syndrome (IRIS). Acute granulomatous interstitial nephritis as a consequence of IRIS has never been reported with Mycobacteriumkansasiicoinfection. Here, we describe an HIV/AIDS patient coinfected with disseminated M. kansasii infection, who presented with acute kidney injury 4.5 months after initiation of HAART. The diagnostic workup revealed IRIS was the cause of acute kidney injury. Short-term course of prednisone (1 mg/kg/day) along with antimycobacterial and HAART regimen achieved significant improvement.

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