Large epidermoid cyst of the spleen causing massive splenomegaly: A case report.

Splenic cysts are uncommon and are classified as primary cysts or secondary cysts based on the presence or absence of an intact epithelial lining, respectively. Epidermoid cysts have an epithelial lining of stratified squamous epithelium and have been reported in normal and intra-pancreatic accessory spleens. An 18-year-old girl presented with a symptomatic, uncomplicated splenic cyst causing massive splenomegaly and symptoms due to mass effect. Peripheral cytopaenias and lymphoproliferative neoplasm were excluded. Preoperative computed tomography was suggestive of a large splenic cyst causing massive splenomegaly and marked loco-regional pressure effects. Open splenectomy was performed and histology confirmed an epidermoid cyst with no features of malignancy. Splenic epidermoid cysts are a rare cause of massive splenomegaly. Surgical intervention is recommended due to symptoms and the risk of complications.