| hydatid cyst of morgagni | <radiology> Paraovarian cyst near fimbria or broad ligament, serous fluid, no clinical significance, wolffian duct remnant (probably) (12 Dec 1998) |
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| hydatid disease | <infectious disease> A tissue infection by the larval stage of the Echinococcus granulosus worm. This disease is common in South America, the Middle East, Asia and Africa. Sporadic cases have been reported in the us. Infection occurs after ingestion of eggs in infected dog faeces. The infection is carried to the liver where cysts form. Cysts may also form in the lungs, bone, brain, kidney, muscles and spleen. Symptoms include abdominal pain, itching, cough, haemoptysis, chest pain and fever. Treatment includes the surgical removal of cysts from the tissue. (27 Sep 1997) |
| hydatid fremitus | The peculiar trembling or vibratory sensation felt on palpation of a hydatid cyst. Synonym: Blatin's syndrome, hydatid fremitus. (05 Mar 2000) |
| hydatid polyp | A pedunculated cyst. Synonym: hydatid polyp. (05 Mar 2000) |
| hydatid pregnancy | The presence of a hydiform mole in the pregnant uterus. (05 Mar 2000) |
| hydatid rash | A toxic eruption occasionally following the rupture of a hydatid cyst. (05 Mar 2000) |
| hydatid resonance | A peculiar vibratile resonance heard on auscultatory percussion over a hydatid cyst. (05 Mar 2000) |
| hydatid thrill | The peculiar trembling or vibratory sensation felt on palpation of a hydatid cyst. Synonym: Blatin's syndrome, hydatid fremitus. (05 Mar 2000) |
| 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) |
| 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) |