“…The studies entailed patients affected by benign thyroid disease. Specifically, thirteen studies focused on the treatment of lingual ectopy [ 2 , 3 , 46 , 47 , 48 , 49 , 50 , 51 , 57 , 58 , 59 , 60 , 61 , 62 ]; six studies were about patients with multinodular goiter [ 52 , 53 , 54 , 55 , 62 , 70 ]; six studies were carried out on patients with Graves’ disease [ 16 , 17 , 54 , 56 , 63 , 64 , 69 ]; a study on Hashimoto’s thyroiditis [ 54 , 69 ]; two studies on nodular goiter [ 54 , 56 , 69 ]; a study on unspecified postsurgical hypothyroidism [ 15 ] and a study on patients with thyrotoxicosis [ 65 ]. The heterograft sites are known in 23 out of 25 cases.…”