{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T00:05:51Z","timestamp":1756339551883,"version":"3.44.0"},"reference-count":15,"publisher":"BMJ","issue":"4","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2021,4,7]]},"published-print":{"date-parts":[[2021,4]]},"abstract":"<jats:p>Crescentic glomerulonephritis is usually associated with an acute nephritic syndrome with rapidly declining renal function. Postinfectious cases usually have a higher possibility of recovery. Juvenile nasopharyngeal angiofibroma (JNA) is a rare, locally aggressive tumour affecting mostly young men. A 28-year-old man presented with recurrent JNA initially excised 2\u2009years prior. The patient was initially managed as a case of airway obstruction and pneumonia. He developed tea-coloured urine, oedema and acute kidney failure requiring dialysis while awaiting surgery. Urine and immunological studies (low C3, negative antineutrophil cytoplasmic antibody and antinucleosomal antibody and high antistreptolysin O) suggested a nephritic aetiology. Nasopharyngeal swab cultures of the mass revealed gram-negative organisms. Kidney biopsy showed diffuse proliferative glomerulonephritis compatible with a postinfectious glomerulonephritis with 77% cellular crescents. The mass was excised with histopathology consistent with JNA. The patient was eventually discharged off dialysis.<\/jats:p>","DOI":"10.1136\/bcr-2021-242785","type":"journal-article","created":{"date-parts":[[2021,4,23]],"date-time":"2021-04-23T10:44:20Z","timestamp":1619174660000},"page":"e242785","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Crescentic postinfectious glomerulonephritis in an adult patient with juvenile nasopharyngeal angiofibroma"],"prefix":"10.1136","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0812-7300","authenticated-orcid":false,"given":"Sheryll Anne","family":"Manalili","sequence":"first","affiliation":[{"name":"Division of Nephrology, Department of Medicine, University of the Philippines Manila, Manila, Philippines"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0198-916X","authenticated-orcid":false,"given":"Paolo 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