The sharp increase in the proportion of HPV-positive OPC over the last decade has occurred at a faster rate in Europe compared with that in North America. In contrast, the relatively low prevalence of HPV in non-OPC remains unchanged.

The complication of cholecystocutaneous fistula secondary to calculus cholelithiasis is an extremely rare occurrence. The incidence has further decreased with the advent of broad-spectrum antibiotics, ultrasonography, and safe and early surgical treatment of biliary tract disease. We are reporting a rare cholecystocutaneous fistula presenting in the right-side gluteal region below the iliac crest.

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