“…Electronmicroscopic dem onstration of nuclear virus, which belongs to the papova virus group (Melnick, 1962), ascertains th at the condition is just a particular type of verruca plana, which was generalized in a special immunologic state and/or predisposition of the patient. The fact th at generalization of verruca plana follows a severe illness in most cases (Sullivan and Ellis, 1939) also conforms to the case presented, in which congenital cyst of the left lung and epiphyseal dysplasia of the long bones are accompanied with the condition.…”