Bockenheimer,1 in 1907, reported a case in which there was marked diffuse enlargement of the veins of the varicose and cavernous type extending from the palm of the hand into the axillary veins. The arteries were not involved, and there was no arteriovenous communication. He considered the condition as sui generis and introduced the term "genuine diffuse phlebectasia," separating this type of venectasia from other forms, such as venous hemangioma (cirsoideum) and varicose veins. I recently had occasion to study a case in which there was enlargement of veins in the shoulder region which showed many of the characteristics of Bockenheimer's genuine phlebectasia. Dr. Steindler, from whose private files the record is taken, gave his permission to report the case here. REPORT OF CASE An 8 year old girl entered the clinic complaining of pain and swelling in the region of the right shoulder. At the age of 4