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Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma
Published on: September 15, 2023
Collision thyroid tumors: a case report of coexisting papillary and follicular carcinoma
Danilo Estuardo Torselli-Valladares1,2, Víctor Argueta2, Carlos Rene Cordón1
1Universidad Francisco Marroquin, Faculty of Medicine, 6 avenue 7-55 zona 10, Guatemala 01010, Guatemala.
Abstract:
Collision tumors of the thyroid gland are defined by the coexistence of two or more histologically and morphologically distinct neoplasms, separated by normal thyroid tissue. This phenomenon is rare, with the most frequently reported combination being the coexistence of medullary carcinoma and papillary carcinoma. This case reports a 73-year-old female patient with an asymptomatic thyroid nodule. Ultrasonographic examination revealed a solid, isoechoic, well-defined nodule with a halo and peripheral vascularization, measuring 4.3 × 2.5 cm in the left lobe. Fine-needle aspiration cytology classified the nodule as Bethesda IV (follicular tumor). Following total thyroidectomy, histopathological analysis identified papillary carcinoma in the isthmus and minimally invasive follicular carcinoma in the left lobe.
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