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Acute osteomyelitis is a relatively rare disorder in the neonatal period, with considerable morbidity and mortality. Early diagnosis and prompt treatment are essential for a successful outcome. In this report we present a case of acute osteomyelitis of the talus due to methicillin-resistant Staphylococcus epidermidis, observed in a 30-day-old infant.

We describe the case of a previously healthy six-year-old boy with a right renal abscess due to a methicillin-resistant Staphylococcus aureus, which necessitated a radical nephrectomy. Although renal ultrasonography is often the initial tool to identify fluid collection, in our case the diagnosis was obtained only after performing an abdominal CT with intravenous contrast. It is therefore necessary to combine these different imaging techniques in all children with fever and abdominal/lumbar pain without any apparent cause in order to obtain an early diagnosis and minimise organ damage.