Vascular Invasion of Papillary Thyroid Carcinoma into Neck Veins and Superior Vena Cava: A Case Report

Abstract

Papillary thyroid cancer is the most common thyroid malignancy in women which spreads through lymphatic. Even though microscopic vascular invasion has been published in the recent past, direct venous extension is rare. This case report is about a rare presentation of a Fine Needle Aspiration Cytology (FNAC) proven papillary thyroid carcinoma in a 45-year-old female patient, who presented with a swelling in the neck. The Contrast Enhanced Computed Tomography (CECT) of the neck showed multiple nodular lesions of both lobes of thyroid extending to the retrosternal region and direct tumour thrombus extension to thyroid veins, External Jugular Vein (EJV), Superior Vena Cava (SVC) and subcutaneous veins of neck with lung metastases.