Suspected ifosfamide-induced neurotoxicity.

Ifosfamide is an antineoplastic agent that requires hepatic activation to the cytotoxic active metabolite ifosforamide mustard. During metabolism, the byproduct, chloroacetaldehyde, which is structurally similar to both chloral hydrate and acetaldehyde, is produced. Secondary to its ability to cross the blood-brain barrier, this metabolite may be responsible for the neurotoxicity observed with ifosfamide. Any case of suspected ifosfamide-induced neurotoxicity, together with a decision to treat, must be determined on an individual patient basis. The differential diagnosis should include infection, laboratory abnormalities, and concomitant drugs. At this time, literature to support treatment modalities such as intravenous albumin and methylene blue is minimal.