| retention polyp | A smoothly rounded mucosal hamartoma of the large bowel, which may be multiple and cause rectal bleeding, especially in the first decade of life; it is not precancerous. Synonym: retention polyp. (05 Mar 2000) |
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| choanal polyp | An antral-choanal polyp that extends into the nasopharynx; generally originates in the antrum. (05 Mar 2000) |
| metaplastic polyp | A benign small sessile polyp of the large bowel showing lengthening and cystic dilation of mucosal glands; also applied to non-neoplastic gastric mucosal polyp's. Synonym: metaplastic polyp. (05 Mar 2000) |
| colonic polyp | <gastroenterology> A pedunculated growth from the mucosal lining of the colon. most are benign but have the potential to become malignant (cancer). Can present clinically with blood in the stools. (27 Sep 1997) |
| placental polyp | A polyp developed from a piece of retained placenta. (05 Mar 2000) |
| mucous polyp | An adenomatous polyp in which conspicuous amounts of mucin are formed, a polypoid cyst that contains mucus. (05 Mar 2000) |
| polyp | 1. <pathology> Growth, usually benign, protruding from a mucous membrane. 2. <plant biology> The sessile stage of the Cnidarian life cycle, the cylindrical body is attached to the substratum at its lower end and has a mouth surrounded by tentacles bearing nematocysts at the upper end, Hydra and the feeding polyps of the colonial Obelia are examples. (14 Oct 1997) |
| myomatous polyp | A polyp that consists of benign neoplastic tissue derived from nonstriated (smooth) muscle. Synonym: fleshy polyp. (05 Mar 2000) |
| cystic polyp | A pedunculated cyst. Synonym: hydatid polyp. (05 Mar 2000) |
| pulp polyp | hyperplastic pulpitis |
| Hopmann's polyp | <otolaryngology> A papillomatous overgrowth of the nasal mucous membrane. Synonym: Hopmann's polyp. (05 Mar 2000) |
| sessile polyp | Any form of polyp that has a relatively broad base. (05 Mar 2000) |
| hydatid polyp | A pedunculated cyst. Synonym: hydatid polyp. (05 Mar 2000) |
| hyperplastic gastric polyp | <radiology> Regeneration polyp, inflammatory polyp, most common type of gastric polyp (75-90%), histology: proliferated gastric mucosa with acute and chronic inflammatory infiltrates in lamina propria, location: randomly distributed in stomach, associated with, chronic atrophic gastritis, pernicious anaemia, findings: sharply delineated polyp with smooth circular border, Mexican hat sign: stalk seen en face overlying the head of the polyp, sessile/pedunculate; usually multiple, usually less than 1 cm, no contour defect in stomach (12 Dec 1998) |
| hyperplastic polyp | A benign small sessile polyp of the large bowel showing lengthening and cystic dilation of mucosal glands; also applied to non-neoplastic gastric mucosal polyp's. Synonym: metaplastic polyp. (05 Mar 2000) |