The purpose of the study was to establish the features of the girth body sizes in Ukrainian men with benign nevi. According to Bunak's scheme in men (aged 22-35 years) patients with benign nevi (melanocyte simple – 34, melanocyte dysplastic – 27, melanocyte congenital – 14 and non-melanocyte benign – 17) determined the girth body sizes. The control group consisted of the girth size of 82 practically healthy men of similar age from the data bank of the Research Center of National Pirogov Memorial Medical University, Vinnytsya. Statistical processing of the results was performed in the license package "Statistica 5.5" using non-parametric evaluation methods. In practically healthy Ukrainian men found significantly lower than in patients with melanocyte benign simple, dysplastic, congenital and non-melanocyte nevi, the circumference of the thigh, neck, waist and chest is found on the breath and at rest; significantly lower than in patients with melanocyte benign simple and congenital and non-melanocyte nevi shoulder girth in the stressed and unstressed state and thighs; significantly smaller than in patients with melanocyte benign simple and non-melanocyte nevi girth of the shin and chest on exhalation; significantly lower than in patients with melanocyte benign simple nevi circumference of the forearms and legs in the upper part and hands; as well as significantly greater or a tendency to greater values than in patients with melanocyte benign dysplastic nevi of the forearm circumference in the upper and lower part and the foot. Patients with melanocyte simple nevi have significantly greater or a tendency to greater values than patients with melanocyte dysplastic nevi of the shoulder girth in the stressed and unstressed state, forearms in the upper and lower part, hands, both thighs, legs in the upper part and shin, feet and legs. and waist; as well as a tendency to greater values than in patients with melanocyte congenital nevi of the forearm and upper arms. Patients with melanocyte dysplastic nevi have significantly lower or tendency to lower values than patients with melanocytic congenital nevi of the tense shoulder girth, forearm in the lower part, forearm in the lower part, both thighs and feet; as well as significantly lower or a tendency to lower values than in patients with non-melanocyte benign nevi of the shoulder girth in a tense state, forearm in the upper and lower part, thighs, both thighs and neck. The established differences in body size between healthy and benign nevi in Ukrainian men, as well as differences between sick men in combination with other anthropometric indicators will identify risk groups for constitutional factors of benign nevi.