| celomic metaplasia theory of endometriosis | That endometrial tissue arises directly from the peritoneal mesothelium. (05 Mar 2000) |
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| haematogenous theory of endometriosis | That endometrial tissue is carried, like metastases of a malignant tumour, through the blood stream. (05 Mar 2000) |
| implantation theory of the production of endometriosis | That, at the time of menstruation, cells of the uterine mucosa pass through the fallopian tubes and escape into the pelvic cavity where they implant themselves on the peritoneum. (05 Mar 2000) |
| endometriosis | <gynaecology> A condition in which tissue more or less perfectly resembling the uterine mucous membrane (the endometrium) and containing typical endometrial granular and stromal elements occurs aberrantly in various locations in the pelvic cavity. Synonym: adenomyosis externa, endometriosis externa. (18 Nov 1997) |
| endometriosis interna | <gynaecology> A condition where there is abnormal thickening of the endometrial lining of the uterus, extending into the fibrous and muscular layers. This condition occurs most commonly in women above 30 who have had children. Symptoms include prolonged or heavy menstrual bleeding and painful menses with cramping. Treatment generally includes pain medications and a hysterectomy in select (more severe) cases. Birth control pills may aggravate symptoms. (07 Apr 1998) |
| lymphatic dissemination theory of endometriosis | That endometrial tissue is transmitted by the lymphatic channels. (05 Mar 2000) |
| heterotopic | Synonym: ectopic. 2. Relating to heterotopia. Origin: hetero-+ topos, place, + suffix -ic, pertaining to (05 Mar 2000) |
| heterotopic bones | Bone's that do not belong to the main skeleton but that regularly develop in certain organs, e.g., the heart, penis, clitoris, and snout of some animals. (05 Mar 2000) |
| heterotopic graft | Transplantation of a tissue or organ into a position it normally does not occupy. (05 Mar 2000) |
| heterotopic gray matter | <radiology> Presence of cortical neurons in an abnormal location secondary to arrest of migrating neuroblasts from ventricular walls to brain surface between 7-24 weeks of gestational age, frequency: 3% of healthy population associated with: agenesis of corpus callosum, aqueductal stenosis, microcephaly, schisencephaly, encephalocele X-ray: single/multiple bilateral subependymal nodules along lateral ventricles Differential diagnosis: subependymal spread of neoplasm, subependymal haemorrhage, vascular malformation, tuberous sclerosis, intraventricular meningioma, neurofibromatosis (12 Dec 1998) |
| heterotopic pregnancy | A pregnancy not in the uterine cavity. (05 Mar 2000) |
| heterotopic stimulus | Any electrical activation from an abnormal locus. (05 Mar 2000) |
| ossification, heterotopic | The development of bony substance in normally soft structures. (12 Dec 1998) |
| transplantation, heterotopic | Transplantation of tissue typical of one area to a different recipient site. The tissue may be autologous, heterologous, or homologous. (12 Dec 1998) |