Fig. 1From: Paraspinal extramedullary hematopoiesis in hereditary spherocytosis with a concurrent follicular lymphoma: case report and review of the literaturePET scan imaging before and after four weeks of Rituximab. a PET/CT scan before immunotherapy. Note a large metabolically active paravertebral mass of soft tissues adjacent to thoracic vertebral bodies T6 to T9 (arrow). A lesion in inter-aorto-caval mass is not visible at this level. b PET scan after immunotherapy; partial uptake reduction of the main thoracic paravertebral mass (arrow) and the inter-aorto-caval lesion (arrowhead)Back to article page