What are epithelial cysts of spleen?

• Splenic cysts are usually solitary, seen in children and young adults. • Histogenesis in unknown. • Most epithelial cysts of spleen are large, often symptomatic, and require splenectomy. Unilocular cyst filled with serous fluid. • There are rare cases of mucinous epithelial cysts with associated pseudomyxoma peritonei. • The cyst lining may consist of columnar, cuboidal or squamous epithelium. • The lining cells may be positive for CEA and CA19-9.