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Pseudo-tumoral blood collections in haemophiliacs are uncommon but must be borne in mind because of their severity and of the need for timely and appropriate treatment. Surgical excision appears to be required as soon as the tendency towards enlargement is recognized and before the volume and complications of the tumour increase the difficulties, particularly in the iliac fossa. Other treatments, especially puncture-aspiration, seem to be ineffective and/or dangerous. A better knowledge of the pathogenic processes involved might lead to new therapeutic approaches.

Clinical and biological studies were carried out in 21 subjects one to twenty-three years after the injured spleen had been removed. Asplenia did not give rise to clinical symptoms, did not facilitate infections and had no effect on growth. Laboratory investigations revealed a decrease in IgM in 6 subjects and minor quantitative and qualitative platelet abnormalities. The absence of Jolly's bodies in 7 subjects was suggestive of spleen regeneration, which was confirmed by scintigraphy in 2 cases. The significance of these findings in discussed.