This population-based study evaluated the etiological factors of benign skin tumors. We found several different predisposing factors, each of which could represent part of the etiologic process for these tumors. Furthermore, our findings confirm that benign skin tumors are exceedingly common in elderly people [7].
Almost 80% of our subjects had at least one benign skin tumor, and the presence of multiple tumors varied between tumor types, but affected as many as 15.6% of cases. The most common benign skin tumor was seborrheic keratosis, followed by lentigo solaris. This echoes the results of previous studies: an Iranian study of 259 persons aged 60 and over found benign neoplasms in 68.3% of the population, with seborrheic keratosis (49.4% participants) the most frequent [1]. A German study of 223 persons aged 65 and…