| stalked hydatid | A small fluid-filled cyst attached by a slender stalk to the fimbriated end of the uterine tube; a vestigial remnant of the embryonic mesonephric duct. Synonym: appendix vesiculosa, Morgagni's hydatid, morgagnian cyst, stalked hydatid, vesicular appendage. (05 Mar 2000) |
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| nonpedunculated hydatid | A vesicular nonpedunculated structure attached to the cephalic pole of the testis; a vestige of the cephalic end of the paramesonephric (mullerian) duct. Synonym: appendix testis, appendix of the testis, nonpedunculated hydatid, ovarium masculinum, sessile hydatid. (05 Mar 2000) |
| osseous hydatid cyst | A morphological form of hydatid cyst caused by Echinococcus granulosus, and found in the long bones or the pelvic arch of humans if the embryo is filtered out in bony tissue; in this site no limiting membrane forms and the cyst grows in an uncontrolled fashion, producing cancellous structures and inducing fracture, followed by spread to new sites. (05 Mar 2000) |
| unilocular hydatid cyst | The commonest form of hydatid cyst in man, caused by Echinococcus granulosus and found in the liver, lungs, or any other site where the hexacanth embryo may settle if it passes the hepatic or pulmonary capillary filters; characterised by large balloon-like forms lined internally with a germinative membrane, enclosed externally in a laminated membrane within a host-parasite capsule, and filled with fluid (hydatid fluid) and infectious scoleces of the young tapeworms (hydatid sand). (05 Mar 2000) |
| adenomatous polyp | A polyp that consists of benign neoplastic tissue derived from glandular epithelium. Synonym: cellular polyp, polypoid adenoma. (05 Mar 2000) |
| aural polyp | <otolaryngology> A benign polyp in the external ear canal that can be attached to the tympanic membrane. (27 Sep 1997) |
| bladder polyp | A pedunculated tumour that arises from the mucosal surface of the bladder. most are benign, but some may become malignant. (27 Sep 1997) |
| bleeding polyp | Synonym: vascular polyp. (05 Mar 2000) |
| bronchial polyp | A polyp growing from the bronchial mucosa. (05 Mar 2000) |
| cardiac polyp | Usually a rounded thrombus attached to the endocardium. (05 Mar 2000) |
| vascular polyp | A bulging or protruding angioma of the nasal mucous membrane. Synonym: bleeding polyp. (05 Mar 2000) |
| gelatinous polyp | A polyp that consists of delicate, loose, edematous connective tissue, a polypoid myxoma. (05 Mar 2000) |
| regenerative polyp | A hyperplastic polyp of the gastric mucosa. (05 Mar 2000) |
| cellular polyp | A polyp that consists of benign neoplastic tissue derived from glandular epithelium. Synonym: cellular polyp, polypoid adenoma. (05 Mar 2000) |
| pedunculated polyp | Any form of polyp that is attached to the base tissue by means of a slender stalk. (05 Mar 2000) |