AN UNUSUAL PRESENTATION OF THYROID GLAND CARCINOMA: A CASE REPORT

Abstract

Thyroid disorder is a common clinical presentation in our day to day Otolaryngology and Head and Neck Surgery (ENT and HNS) practice. Papillary thyroid carcinoma (PTC) and medullary thyroid carcinoma (MTC) have always been considered different from each other; in their incidence, their cell origin and their histopathological features. The simultaneous occurrence of  PTC and  MTC in the same thyroid gland is rather rare. We are presenting  a case of a 75 year old gentleman from Sinhupalchowk who came with history of swelling in front of neck for 20 years. Computer Tomography (CT) scan of the neck showed features consistent with huge colloid goiter without local invasion. Fine needle aspiration cytology (FNAC) showed features of mixed papillary and medullary carcinoma. Near total thyroidectomy was performed. Post operative histopathological examination (HPE) showed poorly differentiated carcinoma with features of papillary and medullary carcinoma.

Keywords: Collision tumor, Medullary carcinoma, Papillary carcinoma