“…The lesion is characteristically diffuse, and involves almost the entire spleen, but solitary cystic lesions can be found (Asch et aI., 1974;Tuttle and Minielly, 1978). The lesion is composed of single or multiple cysts of varying sizes, which are lined by endothelium and filled with proteinaceous fluid (Asch et aI., 1974;Pearl and Nassar, 1979). Simultaneous involvement of other organ systems, including skin, lungs, bones, or other viscera, is occasionally present.…”