Can a toddler have an enlarged spleen without any other symptoms? what would be the cause? would symptoms eventually show up?

Spleen Enlargement:: Spleen lies in left upper quadrant of abdomen, under the rib cage. Normally not palpable, when palpable means-, double sized. Sometimes palpable spleen seen without any cause, resolves. Common cause: hemolytic anemia, e.g. Sickle cell, thalassemia, heriditary spherocytosis, pyruvate kinase deficiency, etc. Mono infection in children and adolescent causes enlargement. Talk to his pediatrician.