struma ovarii


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struma

 [stroo´mah]
Hashimoto's struma (struma lymphomato´sa) Hashimoto's disease.
struma ova´rii a teratoid ovarian tumor composed of thyroid tissue.
Riedel's struma Riedel's thyroiditis.

stru·ma o·va·ri·i

a rare ovarian tumor, regarded as teratomatous, in which thyroid tissue has surpassed the other elements; occasionally associated with hyperthyroidism.

struma ovarii

The presence of mature thyroid tissue as the predominant tissue in an ovarian teratoma, which may cause clinical hyperthyroidism; 5-10% of struma ovarii become malignant, which is indicated by metastasis

stru·ma ova·ri·i

(strū'mă ō-var'ē-ī)
A rare ovarian tumor, regarded as teratomatous, in which thyroid tissue has surpassed the other elements; occasionally associated with hyperthyroidism.
References in periodicals archive ?
Se realizo una busqueda sistematica de la literatura en Medline via PubMed de 1966 a la fecha en Imbiomed y Ebsco usando los terminos: "Struma Ovarii", "Ovario", "Estruma" y "Teratoma monodermico".
Se recuperaron 450 titulos publicados, de estos se revisaron en total 27 articulos relacionados con struma ovarii y teratomas bilaterales de ovario, y finalmente se incluyeron en la revision 11 articulos relacionados directamente con el tema; 5 de estos correspondieron a reporte de casos y 6 a revision de tema.
Se estima que la prevalencia del struma ovarii entre todos los teratomas de ovario oscila entre 2,5-2,7 % y alrededor del 0,3 % de todas las neoplasias ovaricas con una prelacion especial por la quinta y la sexta decada de vida (9, 10).
In order to qualify for struma ovarii more than 50% of the overall tissue should contain thyroid7.
Malignant struma ovarii is diagnosed on the basis of cellular atypia, mitosis and stromal invasion8.
The same is true for histologic malignancy in struma ovarii, as it does not necessarily equate with biological malignancy.
Conclusions from this study of histology plus our two other earlier analyses (1,3) indicate that struma ovarii, especially if cellular ("proliferative"), is a neoplasm of low-grade malignancy, with a low but definite propensity to recur.
The enigma of struma ovarii. Pathology 2007;39:139-46.
Thyroid-type carcinoma of struma ovarii. Arch Pathol Lab Med 2010;134:786-91.
Case Age Location Tumor No in Years Diameter[cm] 1 34 Right 5 2 23 Right 10 3 32 Left 10 4 35 Right 9 5 46 Right 7 6 37 Right 6 7 38 Left 15 8 41 Left 7 9 32 Left 10 10 40 Right 11 11 40 Right 10 12 25 Right 6 13 24 Left 7 Case Diagnosis Histologic No Grade 1 MCT * 0 2 MCT 0 3 MCT 0 4 MCT 0 5 MCTwith MC[A.sup.+] 0 6 MCT 0 7 MCT with SC[C.sup.[??]] 3 8 Struma Ovarii 0 9 MCT 0 10 MCT 0 11 MCT 0 12 MCT 0 13 MCT 0
Hyperthyroidism is rare; however, the preoperative diagnosis of struma ovarii/malignant struma ovarii may be suggested through thyroglobulin measurement or from scanning of patients affected by hyperthyroidism.
Metastasis of malignant struma ovarii has been documented.