inverted papilloma inverted transitional cell papilloma A benign papillary neoplasm composed of transitional cells and characterized by an endophytic growth pattern. DOID:4630 ICDO:8121/1 MONDO:0003064 NCIT:C4118 UMLS:C0334269 inverted transitional cell papilloma inverted transitional papilloma transitional papilloma, inverted transitional cell papilloma