Acute Myeloid Leukemia: A "Head to Toe" Examination.

Acute myeloid leukemia (AML) is a hematologic malignancy that can affect all blood cell lineages, the presentation varies, and infection is a common complication. This case involves a patient initially presenting with a necrotic foot ulcer and leukocytosis, ultimately leading to a diagnosis of osteomyelitis. After establishing adequate source control with serial debridements and intravenous antibiotics, the patient developed some knee swelling. On repeat assessment, he was discovered to have lymphadenopathy, and workup revealed AML. As indicated by this case, though it appeared a clear-cut diagnosis of osteomyelitis, there was an underlying malignancy that would have potentially gone unnoticed due to incomplete clinical examination.