Among the most prevalent diseases in the population arethyroid nodules (TNs), the incidence of which is risingalong in parallel with technological progress in treatmentsand diagnosis, lifestyle changes and environmental pollution. Many reports have stated that between 4 and 7% ofTNs are diagnosed by palpation and 19 and 67% are foundusing high-resolution ultrasound [1]; between 8 and 16% ofthese TNs were diagnosed as cancer [2]. Delimitation ofrisk factors related to TNs is considered an important aim.The association between TNs and adiposity have beeninvestigated by many studies [1, 3–5]. The measurementof adiposity in these studies was primarily body massindex (BMI) and waist circumference. BMI is used to assess the severity of obesity; however, fat distribution, inparticular the proportion between subcutaneous and visceral fat, is not determined by BMI [6]. Waist circumference reflects not only pre-peritoneal and visceral but alsosubcutaneous fat accumulation and is related to intere