Isolated superior mesenteric venous thrombophlebitis with acute appendicitis.

Introduction: Isolated superior mesentericveinous thrmbophlebitis is a rarely recognised condition associated with a high morbidity. It usually develops secondary to infection in the drainage area of the portal venous system, like appendix.

Presentation Of Case: We report a case of neglected perforated acute appendicitis complicated by superior mesenteric venous pyelephlebitis patiant represented with a vague pain to right of umlicus, which is atypical this why cat scan was done and showed obstructed superiormesentric vein, portal vein was free with acute appendicitis.