Monarch Disease Ontology entry MONDO_0021109 (inverted urothelial papilloma) is an endophytic lesion in the urinary tract which shares several morphologic features with urothelial papilloma. This lesion may recur after complete excision. Transitional cell carcinomas may arise within inverted urothelial papillomas. Also known as: inverted papilloma of urinary tract, urinary tract inverted papilloma, urothelium inverted papilloma.