TY - JOUR T1 - Cytological misdiagnosis of high-grade medullary thyroid carcinoma with papillary-like nuclear features: A case report AU - Mızrak, Ali Y2 - 2025 DO - 10.18621/eurj.1670211 JF - The European Research Journal JO - Eur Res J PB - Prusa Medical Publishing WT - DergiPark SN - 2149-3189 SP - 1 EP - 9 VL - 11 IS - 6 LA - en AB - Medullary thyroid carcinoma is an uncommon form of thyroid cancer that arises from the parafollicular C cells. In this case report, a high-grade medullary thyroid carcinoma is discussed, which was initially diagnosed as papillary carcinoma due to the presence of papillary-like nuclear features in the cytological evaluation. A 65-year-old female presented to the ear, nose, and throat department with a palpable neck mass. Based on the cytological features of the fine needle aspiration (FNA), a diagnosis of 'malignant, papillary carcinoma', (Bethesda category 6) was made. 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