Papillary Carcinoma Arising From Infrahyoid Ectopic Thyroid Tissue with Hemi-agenesis of Thyroid Gland and Follicular Adenoma with Hürthle Cell Changes in Existing Thyroid Lobe: A Rare Case Report. Bangladesh J. Nuclear Med. 2018;20(1):59-62. doi:10.3329/bjnm.v20i1.36863