Majumder, ASen, D2020-04-102020-04-102020-03Majumder A, Sen D. Uncommon affliction of a common disease - primary tuberculosis of thyroid gland. Indian Journal of Pathology and Microbiology. 2020 Mar; 63(1): 83-850377-49290974-5130http://imsear.searo.who.int/handle/123456789/196429Tuberculosis (TB) continues to be a major public health problem in India. With an annual incidence rate of 2.8 million new cases, India accounts for a quarter of the global TB burden. Primary thyroid TB still remains a rare entity even in this era of global TB pandemic. Here we discuss a case of primary thyroid TB in a 22-year-old immunocompetent male patient presenting with a thyroid swelling followed by non-healing sinus tract after fine-needle aspiration cytology (FNAC) procedure. TB is a known common cause for development of chronic sinuses and ulcers. However, the primary involvement of thyroid gland along with formation of non-healing sinus tract post FNAC make it a most unusual case posing a diagnostic challenge to the unsuspecting physician.Fine-needle aspiration cytology (FNAC)sinus tractthyroidtuberculosisJournal ArticleIndiaDepartment of Pathology, Command Hospital, Pune, Maharashtra, IndiaDepartment of Radiodiagnosis and Imaging, Command Hospital, Pune, Maharashtra, India