title: Delayed diagnosis of pseudoaneurysm formation in a patient with diaphyseal aclasis.
abstract: A 15 year old boy, with known diaphyseal aclasis, presented with a swollen left leg. The diagnosis of popliteal pseudoaneurysm, a known and well understood vascular complication, was delayed due to presentation suggestive of a chondrosarcoma. In this age group, sarcomatous change is more common and a potentially sinister complication of diaphyseal aclasis. Following a sarcoma MDT referral, the correct diagnosis was confirmed by ultrasound and CT angiogram. This case identifies one of the largest, non-ruptured popliteal pseudoaneurysms reported and illustrates an unusual complication of a rare orthopaedic genetic condition, which is potentially limb threatening.
authors.affiliation: Royal National Orthopaedic Hospital/Barnet General Hospital, UK.
authors.forename: L
authors.initials: L
authors.lastname: Grainger
authors.affiliation: Royal National Orthopaedic Hospital/Barnet General Hospital, UK.
authors.forename: J
authors.initials: J
authors.lastname: Stammers
authors.affiliation: Royal National Orthopaedic Hospital/Barnet General Hospital, UK.
authors.forename: V
authors.initials: V
authors.lastname: Ranawat
authors.affiliation: Royal National Orthopaedic Hospital/Barnet General Hospital, UK.
authors.forename: A
authors.initials: A
authors.lastname: Loh
authors.affiliation: Royal National Orthopaedic Hospital/Barnet General Hospital, UK.
authors.forename: J
authors.initials: J
authors.lastname: Skinner