A young female patient had a recurrence of severe spherocytic anemia there years after having been submitted to splenectomy. The presence of two accessory spleens with a size of 3.5 cm and 4.0 cm, was demonstrated by technetium scanning and ultrasound images. Surgical removal of these noduli resulted again in prompt recovery. The development of the spleen beings in the fifth week of intrauterine life at the dorsal mesogastrium. The lack of fusion of splenic lobuli is responsible for the occurrence of accessory spleens. A surgeon performing splenectomy for the treatment of hemolytic anemia should always search for possible existences of accessory spleens.