neoplasm polyp MESH:D011127 MONDO:0005079 polyp ICD10CM:N84 UMLS:C0032584 EFO:0000662 NCIT:C3340 A usually exophytic mass attached to the underlying tissue by a broad base or a thin stalk. Polyps can be neoplastic or non-neoplastic. Neoplastic polyps usually represent proliferations of the epithelium, and are commonly seen in the gastrointestinal tract. Polyps of the gastrointestinal tract are often called adenomas, are associated with dysplasia, and may eventually transform into carcinomas. Non-neoplastic polyps may be inflammatory, degenerative, or the result of malformations. SCTID:441456002 MEDGEN:19397 cancer or benign tumor