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Medicina (Buenos Aires)

versão impressa ISSN 0025-7680versão On-line ISSN 1669-9106

Resumo

MONTEROS ALVI, Marcelo et al. Risk markers of follicular neoplasms in thyroid nodules. Medicina (B. Aires) [online]. 2009, vol.69, n.5, pp.497-501. ISSN 0025-7680.

Thyroid nodules of follicular origin include neoplastic and non neoplastic processes. No methods of diagnosis or cytological features (obtained by fine-needle aspiration, FNA) may differentiate both types, and therefore differential diagnosis still constitutes a dilemma.We analyzed the existing association between clinical variables and methods of diagnosis in thyroid nodules of follicular type with the aim of defining risk of neoplasm. Ninety two patients with nodular goiters, of follicular origin by cytology, previously submitted to surgical treatment were analyzed. The studied variables were: sex, age, size of the nodule, ultrasound characteristics, cytological diagnosis, TSH level and results of the scintigraphy. Of 92 cases, 74 were neoplastic nodules (56 adenomas and 18 differentiated thyroid cancer) and 18 were non neoplastic nodules. Markers, that were related to high risk of follicular neoplasm corresponded to the cytological diagnosis of proliferation of high follicular degree, in iso or hypoechoic, and hypofunctioning nodules with I131. The carcinomas presented cytology of follicular proliferation of high degree, in hipoechoic nodules, of irregular edges with microcalcifications and hypofunctioning, in male patients or patients younger than 20 years. The presence of macrocalcifications and hypercaptation would be in favor of nodules of benign origin.The correlation of diagnostic methods and clinical variables in thyroid nodules of follicular type would allow us to differentiate the risk of neoplasm or carcinoma, and plan surgical selective treatments.

Palavras-chave : Follicular neoplasms; Thyroid nodules; Fine-needle aspiration.

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