{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T07:40:04Z","timestamp":1756280404056,"version":"3.44.0"},"reference-count":11,"publisher":"BMJ","issue":"12","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,12,1]]},"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:p>Contrast-enhanced CT is the gold standard for the diagnosis of acute focal bacterial nephritis (AFBN). However, owing to radiation exposure and the possibility of contrast agent-induced side effects, contrast-enhanced CT is not always recommended for children. A paediatric patient presenting with a 1-week history of fever was admitted to our hospital. After a urine culture detected <jats:italic>Escherichia coli<\/jats:italic>, antimicrobials were administered; however, the fever had not resolved by the third day of hospitalisation. Renal diffusion-weighted MRI was performed and showed multiple wedge-shaped areas of high signal intensity in the right kidney. Additionally, the same site showed an area of low signal intensity in the apparent diffusion coefficient, and a diagnosis of AFBN with abscess was made. A chronic-phase technetium-99m-labelled dimercaptosuccinic acid renal scintigraphy was performed, but there was no renal scarring. MRI may be a more suitable tool for diagnosing AFBN given no radiation exposure.<\/jats:p>","DOI":"10.1136\/bcr-2023-257459","type":"journal-article","created":{"date-parts":[[2023,12,12]],"date-time":"2023-12-12T12:42:03Z","timestamp":1702384923000},"page":"e257459","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Utility of MRI in diagnosis and treatment of acute focal bacterial nephritis with abscess formation in a paediatric patient"],"prefix":"10.1136","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0346-0611","authenticated-orcid":false,"given":"Yuhi","family":"Takagi","sequence":"first","affiliation":[{"name":"Department of Pediatrics, Dokkyo Medical University, Tochigi, 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