Busulfan associated pulmonary toxicity: A benign mimic of squamous cell carcinoma diagnosed in a bronchoalveolar lavage specimen

An uncommon case of iatrogenic cellular changes associated with busulfan therapy in a bronchoalveolar lavage of a 65-year-old woman who underwent bone marrow transplantation is presented and discussed. Chemotherapeutic changes are presented, and pitfalls discussed.