“…Nevertheless, having analyzed medical literature as far back as the last hundred and ten years, I have identified in total 58 cases of papillary (PTC) and follicular (FTC) thyroid cancer metastases to skeletal muscles: 45 cases in the considered time range 2006 through 2016, and 13 cases from 1907 to 2005 (doi: 10.3892/ol.2018.8216). Still, considering only the cases of papillary thyroid cancers (PTC) during this period (2006–2016), a total of 34 skeletal muscle metastases were described in 27 patients: 12 females (44%) and 15 males (56%) [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. The mean age was 54.7 years (95% CI: 47.6–61.8; range: 25–89).…”