Anna-Stiina Meriläinen, Eero Pukkala, Tom Böhling, Virve Koljonen
DOI: 10.2340/00015555-3718

Malignant eccrine porocarcinoma is a rare skin adnexal cancer arising from the sweat glands. Little is known about the epidemiology and incidence of eccrine porocarcinoma. This registry-based study examined the epidemiology and incidence data for eccrine porocarcinoma from the Finnish Cancer Registry. The study included all persons diagnosed with eccrine porocarcinoma in 2007 to 2017. There were 69 cases in the study period; 34 (49%) male and 35 (51%) female patients. Mean age at diagnosis was 75.5 years. Incidence for men was 0.06 per 100,000 person-years and for women 0.04 per 100,000 person-years adjusted for age according to the World Standard Population. Incidence increased with age. There was one eccrine porocarcinoma-specific death among the 69 patients. The incidence of eccrine porocarcinoma in Finland is therefore low. The mean age at time of diagnosis and the location of eccrine porocarcinoma are consistent with previous reports. The survival of patients with eccrine porocarcinoma is high.

Eccrine porocarcinoma is a skin cancer arising from skin sweat glands. Not much is known about the behaviour of eccrine porocarcinoma or its rate in populations. This study analysed data from the Finnish Cancer Registry, to determine the incidence of patients with eccrine porocarcinoma in Finland during 2007 to 2017. There were a total of 69 patients during this period, of whom half were women and half were men. The patients had a mean age of over 75 years. The incidence was 0.045 per 100,000 person-years. One patient died of eccrine porocarcinoma. Eccrine porocarcinoma is very rare skin cancer and the mortality is lower than previously reported.