Classical appearances of extra-medullary hematopoiesis,in a patient with β-thalassemia major anemia.

• Large paravertebral and intercostal soft tissue masses.
• Low T1 bone marrow signal indicating bone conversion.
• Splenomegaly.

The case was contributed by Dr Raquel Del Carpio-O'donovan, Professor of Radiology, Neurology, Neurosurgery at McGill University.