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Mature cystic teratoma with high proportion of solid thyroid tissue: a controversial case with unusual imaging findings
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Resumo(s)
We describe a case of a mature cystic teratoma of the ovary with high
proportion of solid thyroid tissue (< 50% of the entire tumor) in a
childbearing woman. The patient presented with non-specific abdominal
bloating. Pelvic ultrasound and magnetic resonance imaging revealed a
complex cystic-solid tumor confined to the left ovary with an anterior fatcontaining
locus compatible with mature cystic teratoma and a posterior
predominantly solid component with low signal intensity on T2-weighted
images that was histopatologically diagnosed as benign thyroid tissue.
Thyroglobulin levels were in normal range. Although thyroid tissue is
present in up to 20% of mature cystic teratomas, with exception of struma
ovarii, it is not usually macroscopically nor radiologically identified. The
differential diagnosis should include T2-hypointense adnexal lesions
associated with mature cystic teratoma, malignant transformation of mature
teratoma, and immature teratoma.
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Citação
Rui Gil; Teresa Margarida Cunha; Inês Rolim. Mature cystic teratoma with high proportion of solid thyroid tissue: a controversial case with unusual imaging findings, Journal of Radiology Case Reports, 11, 7, 20-30, 2017.