Depends on subtype and disease can exist along a continuum.
Acute-expect typical features such as severe abdominal pain that is out of proportion to exam findings. Rebound and guarding may occur. Time course usually over days.
Subacute- abdominal pain can be vague and symptoms may be insidious over a period of days to weeks.
Chronic- patients usually are asymptomatic and<unk>  is usually found on imaging incidentally. Some patients may have post prandial colicky abdominal pain that resolves.
Mesenteric vein thrombosis
Abdominal aortic aneurysm
Splenic infarction
Aortocaval fistula
Superior mesenteric artery syndrome
Acute gastroenteritis
Splenic artery aneurysm
Aortoenteric fisulta