Abnormal radioiodine uptake on post-therapy whole body scan and sodium/iodine symporter expression in a dermoid cyst of the ovary: report of a case and review of the literature.
Arch Endocrinol Metab
; 59(4): 351-4, 2015 Aug.
Article
em En
| MEDLINE
| ID: mdl-26331324
In patients affected by differentiated thyroid cancer, the whole-body scan (WBS) with 131-radioiodine, especially when performed after a therapeutic activity of 131I, represents a sensitive procedure for detecting thyroid remnant and/or metastatic disease. Nevertheless, a wide spectrum of potentially pitfalls has been reported. Herein we describe a 63-year-old woman affected by follicular thyroid cancer, who was accidentally found to have an abdominal mass at post-dose WBS (pWBS). pWBS showed abnormal radioiodine uptake in the upper mediastinum, consistent with lymph-node metastases, and a slight radioiodine uptake in an abdominal focal area. Computed tomography revealed an inhomogeneous mass in the pelvis, previously unrecognized. The lesion, surgically removed, was found to be a typical dermoid cyst of the ovary, without any evidence of thyroid tissue. By immunohistochemistry, a moderate expression of the sodium-iodine symporter (NIS) was demonstrated in the epithelial cells, suggesting a NIS-dependent uptake of radioiodine by the cyst.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Neoplasias Ovarianas
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Teratoma
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Neoplasias da Glândula Tireoide
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Radioisótopos do Iodo
Limite:
Female
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Humans
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Middle aged
Idioma:
En
Revista:
Arch Endocrinol Metab
Ano de publicação:
2015
Tipo de documento:
Article