| 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) |
| sarcoma, endometrial stromal | A highly malignant neoplasm of the endometrium, arising from the endometrial stroma. It represents one type of stromal tumour, the other being endolymphatic stromal myosis. They are differentiated on the basis of the number of mitoses per 10 high power fields: endometrial stromal sarcoma has 10 or more mitoses, endolymphatic stromal myosis fewer. Stroma sarcoma is seen most often between the ages of 45 and 50. (devita jr et al., cancer: principles & practice of oncology, 3d ed, p1146) (12 Dec 1998) |
| sex cord-stromal tumour | A malignant neoplasm of the ovary or testis. These tumours differentiate toward sex cords (in embryonic gonads) in the form of female (i.e., granulosa and theca) cells, male (i.e., sertoli and leydig) cells, or indifferent elements. In the ovary, sex cord-stromal tumours comprise 5% of all ovarian neoplasms. In the testes, leydig and sertoli cell tumours comprise about 5% of all testicular neoplasms, 10% of which behave in a malignant fashion. (12 Dec 1998) |
| stromal | Stromatic; relating to the stroma of an organ or other structure. Synonym: stromic. (05 Mar 2000) |
| stromal cells | Connective tissue cells of an organ found in the loose connective tissue. These are most often associated with the uterine mucosa and the ovary as well as the haematopoietic system and elsewhere. (12 Dec 1998) |
| stromal hyperthecosis | Condition in which luteinised cells are present in ovarian stroma at a distance from follicular structures. (05 Mar 2000) |
| stromal processing peptidase | <enzyme> Involved in processing chloroplast stromal proteins Registry number: EC 3.4.24.- (26 Jun 1999) |
| ovarian stromal tumours | <radiology> Age 20 - 50 yrs, 20% of all ovarian tumours, fibroma / fibrosarcoma, granulosa-theca cell tumour, with or without oestrogens most likely to be precocious puberty, endometrial hyperplasia/carcinoma, fibrocystic breast disease, Sertoli-Leydig cell tumour, aka: arrhenoblastoma, with or without androgens most likely to be masculinization, may be mixed type (12 Dec 1998) |
| endometrial stromal sarcoma | <tumour> A term sometimes used for a relatively rare sarcoma believed to be a form of endometriosis in which the lesions form multiple foci in the myometrium and in vascular spaces in other sites, and which consist of histologic and cytologic elements that resemble those of the endometrial stroma. Synonym: stromatosis. (05 Mar 2000) |