Osseous bilateral pseudotumour of the thumb in severe haemophilia A – A case report

Abstract Pseudotumour is a rare complication of haemophilia, categorised as osseous or non-osseous (soft tissue) lesions based on anatomic location. The bones most frequently involved are the larger ones; pseudotumours of small bones are rare. Here we present a rare case of pseudotumours of both thumbs in a 10-year-old male with severe haemophilia A, successfully treated with factor replacement therapy. This case highlights the possibility of treating such cases conservatively, but also the need for education to enable early intervention to prevent potential complications that could be life-threatening.