<prompt> Which of the following is the MOST common primary malignant tumor of spleen?AngiosarcomaHamatomaSecondariesLymphoma  <response>: Primary neoplasm of spleen is a rare entity. Most common primary neoplasm of spleen is hemangioma and most common primary malignant tumor is angiosarcoma. Remember: Most common neoplasm of spleen is lymphoma Most common primary tumor of spleen is Hemangioma Most common primary malignant tumor of spleen is Hemangiosarcoma or angiosarcoma Ref: Sabiston 17e, Page 1689; Maingots 11e, Page 1085; Bailey Love 24e, Page 1091 