Steatocystoma multiplex (SM) and eruptive vellus hair cyst (EVHC) are known as clinically similar but histologically distinct entities, first described by Jamieson in 1873 and Esterly et al. in 1977, respectively. Herein we describe a 24-year-old female patient with both lesions on the anterior chest wall. The biopsy showed portions of two cysts close together with features of SM in one part and features of EVHC in the other part. Our case gives further evidence that these two conditions are closely related. To the best of our knowledge this is the first case where such an anatomically close relationship between these two types of cysts has been described.