| Medical Dictionary: the·co·ma |
A tumor derived from ovarian mesenchyme and consisting chiefly of spindle-shaped cells that frequently contain small droplets of fat; it may form considerable quantities of estrogens, causing development of secondary sexual features in prepubertal girls or endometrial hyperplasia in older individuals. Also called theca-cell tumor.
| Veterinary Dictionary: thecoma |
Theca cell tumor.
| Wikipedia: Thecoma |
| Thecoma | |
| Classification and external resources | |
 High magnification micrograph of a thecoma. H&E stain. |
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| ICD-9 | 220 |
|---|---|
| ICD-O: | 8600 |
| eMedicine | / |
| MeSH | [1] |
Thecomas or theca cell tumors are benign ovarian neoplasms composed only of theca cells. Histogenetically they are classified as sex cord-stromal tumours.
They are typically estrogen-producing and they occur in older women (mean age 59; 84% after menopause). (They can, however, appear before menopause.[1])
Sixty percent of patients present with abnormal uterine bleeding, and 20% have endometrial carcinoma.
Grossly, the tumour is solid and yellow.
Grossly and microscopically, it compress of the ovarian cortex.
Microscopically, the tumour cells have abundant lipid-filled cytoplasm.
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 | Luteoma |
| Compound nevus |
| Junctional nevus |
Copyrights:
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 | Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Read more |
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| Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Thecoma". Read more |
