All are indications for splenectomy, except:

Chediak-Higashi syndrome is a condition that affects many pas of the body, paicularly the immune system. Chediak-Higashi syndrome is also characterized by a condition called oculocutaneous albinism, which causes abnormally light coloring (pigmentation) of the skin, hair, and eyes.spleenectomy is not done in this condition Ref Davidson edition23rd pg832