<prompt> Busulfan toxicity does not include -HyperpigmentationToxic carditisHyperuricemiaPulmonary fibrosis  <response>: Ans. is b i.e., Toxic carditis o Adverse effects of busulfan -- Myelosuppression, hyperuricemia, pulmonary fibrosis, sterility, impotence, amenorrhea, addisons disease like syndrome asthenia and hypotension. o High dose causes veno-occlusive disease of liver, seizures, hemorrhagic cystitis, alopecia, cataract. About option a - In addisons disease there is hyperpigmentation Busulfan causes addisons disease like syndrome. 