Can Analgesic-abuse Nephropathy is a Fertile Groundfor for Rare Collecting Duct (Bellini Duct) Renal Cell Carcinoma or Merely a Coincidence?

Nonsteroid antiinflammatory drugs have been implicated as nephrotoxic drugs, causing both acute and chronic adverse effects that range from reversible ischemia to chronic kidney disease and urothelial tumors to renal cell carcinoma specially papillary subtype. We report one case of collecting duct (Bellini duct) renal cell carcinoma in patient with analgesic-abuse nephropathy. This young individual was suffering from ankylosing spondylitis since the age of 16 years and was consuming diclofenac and paracetamol (acetaminophen) combination for >15 years. He developed hypertension, secondary glomerulopathy, chronic kidney disease and collecting duct renal cell carcinoma.