Congestive splenomegaly due to cirrhotic or
non cirrhotic portal hypertension or splenic
vein obstruction
Hemolytic anemias due to extramedullary
hematopoiesis
Chronic infections especially malaria and
kala-azar in endemic areas
Malignancies
Storage disorders ,especially  Gaucher’s, and
Niemann-pick disease
Anatomical lesions like splenic cysts,
hemangiomas or hamartomas