Enchondroma of the phalanx causing spontaneous fracture

Skiagram of a hand showing an enchondroma of the first phalanx of the middle finger, which has led to spontaneous fracture. The pale area at the proximal end of the bone represents the site of the growth. Here the bone is enlarged and throws a shadow of diminished density. The line of fracture, marked by slight displacement, can be seen towards the distal extremity of the growth. From a gentleman aged 46 years, whose finger broke while he was killing a wounded rabbit. Presented to the Museum by Anthony Alfred Bowlby, CMG, Surgeon and Lecturer in Surgery, St Bartholomew's Hospital.