Case Report: The complete radiological resolution of diffuse cholangitis in a HIV-positive patient with cryptosporidium infection after anti-retroviral therapy.

We present a case of an HIV-positive patient with AIDS cholangiopathy secondary to Cryptosporidium infection. Imaging examination showed intrahepatic and extrahepatic cholangitis without papillary stenosis and extrahepatic bile duct strictures, indicating mild bile duct disease. However, it failed to obtain positive results in fecal microscopy examinations. Alternatively, metagenomic next-generation sequencing (mNGS) of a blood sample identified Cryptosporidium infection. The diagnostic power of mNGS is highly sensitive and can simultaneously identify various pathogens. To avoid irreversible damage to the biliary system, the rapid initiation of anti-HIV therapy restored the function of the immune system and led to the clinical resolution of cryptosporidiosis.