Fig. 1From: Lost bones: differential diagnosis of acro-osteolysis seen by the pediatric rheumatologistFrontal (a) and oblique (b) radiographs of the hands in a 14 year old male patient with primary hypertrophic osteoarthropathy demonstrate bilateral and symmetric tuft resorption and remodeling. Smooth periostitis involves the proximal phalangeal shafts (arrows). Frontal radiograph of the feet (c) shows smooth tapering of the distal tuftsBack to article page