Inflammatory pseudotumor of the spleen.

Two examples of an unusual splenic inflammatory pseudotumor are reported. Splenectomy followed detection of a mass lesion by CT scan in one case, and in the other, the pseudotumor was an unexpected and incidental pathologic finding. Despite the alarming gross appearance of these lesions, microscopic features were unequivocally inflammatory and benign. To our knowledge, this entity has not been described previously in the spleen.