Haemophilic pseudotumor

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Known for hemophilia A. Had a pathological right femoral fracture 6 years ago treated with an intramedullary nail fixation as well as an amputation of the left lower limb 10 years ago for intraosseous femoral cystic swelling. CT angiography of the right lower limb for vascular evaluation before amputation.

Patient Data

Age: 50 years
Gender: Male
ct

Large well-defined multiloculated expansile lytic lesion along the right femoral shaft of relatively homogeneous hypodense content with foci of calcification, displacing the adjacent muscles. Associated endosteal scalloping, trabeculations, septations, with extensive cortical breakthrough and cortical fracture.

The deep and superficial femoral arteries are patent with normal caliber.

Diffuse osteopenia with features of haemophilic arthropathy of the knee.

Case Discussion

CT features of a right haemophilic pseudotumor in a patient known for hemophilia A, with a history of left lower limb amputation 10 years ago for the same disease

Haemophilic pseudotumor is considered a rare complication of hemophilia, characterized by progressive cystic swelling of muscle and/or bone due to repeated bleeding, It occurs in less than 2% of haemophilic patients.

 

Additional contributor: ZE. Boudiaf, MD, CHU, Constantine, Algeria

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