September 10, 2025Case Reports in PathologyOpen Access

Multifocal Medullary and Papillary Thyroid Carcinoma Occurring as a Collision Tumor: A Case Report

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A rare collision tumor identified as a combination of medullary thyroid carcinoma and papillary thyroid carcinoma underscores the complexity of thyroid tumors.
Fine needle aspiration cytology confirmed the diagnosis of medullary thyroid carcinoma in a 64-year-old male patient with a suspicious thyroid lesion.
Surgical intervention included total thyroidectomy and neck dissection, providing critical samples for histopathological evaluation.
Management and prognosis vary significantly, depending on the aggressiveness of the tumor type with a higher stage.

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Case report highlights collision tumors with medullary and papillary thyroid carcinoma components, suggesting unique management approaches.

Gadre et al. (2025) studied this question.

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Case report highlights collision tumors with medullary and papillary thyroid carcinoma components, suggesting unique management approaches.