“…Because they can mimic other vascular tumors such as hemangiomas or hamartomas, splenectomy is often the only method of definitive diagnosis. Immunohistochemical staining is positive for CD31, CD21 [1,6], von Willebrand factor, CD68 [6,7], and occasionally positive CD34 [9] and CD8 [7]. In about one third of cases, benign littoral cell angioma has been associated with other visceral malignancies, especially colorectal adenocarcinoma; therefore, postoperative monitoring has been advocated [6,7,10,11].…”