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Thyroid isthmus agenesis associated with solitary nodule: A case report
Alberto Schanaider1, Paschoal Josias de Oliveira
1Experimental Surgical Center, CCS, Bloco J, 2nd floor, Universitary City, UFRJ, Ilha do Fundão, Rio de Janeiro, Postal code/CEP: 21944-970, Brazil. albertoscha@gmail.com.
Background:
Agenesis of the isthmus associated with nontoxic solitary nodular goiter is a rare congenital anomaly. Imaging data exceptionally has been previously reported in the English language literature.
Case Presentation:
Preoperative assessment of a 22-year-old white man patient showed an asymptomatic nodule of the thyroid at the left lobe, measuring 2.3 x 1.5 cm in diameter without regional lymphadenopathy. At surgical exploration it was seen an absence of the thyroid isthmus.
Conclusion:
Thyroid isthmus agenesis does not cause clinical symptoms by itself and most of the times the diagnosis is incidental due to the existence of other thyroid pathology.
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