| ectopic decidua | Decidual cells which may be found in the cervix, appendix, or areas other than the endometrium. (05 Mar 2000) |
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| ectopic eyelash | The condition in which the eyelash's grow from the eyelid at a site other than the lid margin. Synonym: canities poliosis. (05 Mar 2000) |
| ectopic heartbeat | Any heartbeat that occurs out of the normal sinus rhythm of the heart. Examples include premature ventricular contractions and atrial premature contractions. Premature beats can be exacerbated by the use of stimulants such as caffeine, smoking, alcohol, decongestants and cocaine. (27 Sep 1997) |
| ectopic hormone | A hormone formed by tissue outside the normal endocrine site of production; e.g., adrenocorticotropic hormone produced by a bronchogenic carcinoma. Synonym: inappropriate hormone. (05 Mar 2000) |
| ectopic impulse | An electrical impulse from an area of the heart other than the sinus node. (05 Mar 2000) |
| ectopic pacemaker | Any pacemaker other than the sinus node. (05 Mar 2000) |
| ectopic pairing | Pairing of heterochromatin randomly, without regard to whether they are homologous. (09 Oct 1997) |
| ectopic pancreas | <radiology> Site: stomach (most common), small bowel, Meckel diverticulum, gallbladder, spleen prevalence: 10% at autopsy, 1:500 at operation (12 Dec 1998) |
| ectopic pinealoma | <tumour> An obsolete term for an undifferentiated neoplasm resembling a pinealoma, usually found near the pituitary gland; believed by some to be an undifferentiated teratoma. (05 Mar 2000) |
| ectopic pregnancy | A gestation elsewhere than in the uterus. Often occurring in the fallopian tube. Presents with abdominal pain, fainting, and/or vaginal bleeding. (27 Sep 1997) |
| ectopic pregnancy, symptoms of | Symptoms of an ectopic pregnancy can often be vague and include vaginal bleeding, abdominal or pelvic pain (usually stronger on one side),shoulder pain, weakness, or dizziness. Weakness, dizziness, and a sense of passing out upon standing can represent serious internal bleeding, requiring immediate medical attention. (12 Dec 1998) |
| ectopic rhythm | Any cardiac rhythm arising from a centre other than the normal pacemaker, the sinus node. (05 Mar 2000) |
| ectopic schistosomiasis | A clinical form of schistosomiasis that occurs outside of the normal site of parasitism (mesenteric vein or hepatic portals); may result from accidental blood-borne transport of schistosome eggs or, rarely, adult worms, to various unusual sites such as the skin, brain, or spinal cord. (05 Mar 2000) |
| ectopic tachycardia | A tachycardia originating in a focus other than the sinus node, e.g., atrial, A-V junctional, or ventricular tachycardia. (05 Mar 2000) |
| ectopic teratosis | A teratosis in which the organs or other parts are misplaced. (05 Mar 2000) |