Pelvic extramedullary haematopoiesis associated with hereditary spherocytosis

: Extramedullary haematopoiesis (EMH) is a rare disorder and is characterised by the appearance of haemopoietic tissue outside of the bone marrow. The most common of the previously recognised sites of EMH are the spleen and the liver. This case‐report describes a unique case of pelvic EMH secondary to herditary spherocytosis with regression of the lesion following splenectomy. Current principles of managing EMH are also discussed.