{
  "abstract": "Background: To our knowledge, this is one of the first case reports describing hematochezia and acute colitis as a consequence of refeeding in the setting of severe malnutrition. The differential diagnosis was broad and included ischemic (for example, possible reperfusion-like injury following refeeding), infectious, and autoimmune/inflammatory (for example, inflammatory bowel disease) etiologies. This presentation is rare, particularly in early adolescents and boys.\n\nCase presentation: This case report describes an 11-year-old boy who intentionally restricted his food intake for six months, resulting in a 17.1-kg weight loss (from 50.9 kg to 33.8 kg), and who presented after 72 h without oral intake. Shortly after initiating enteral nutrition via nasogastric tube, the patient developed significant hematochezia associated with a fever, tachycardia, and a marked elevation in C-reactive protein and fecal calprotectin. A computed tomography of the abdomen was concerning for diffuse ischemic colitis of unclear etiology, leading to a diagnostic laparoscopy, which demonstrated an edematous, acutely inflamed colon with no areas of ischemia.\n\nConclusions: The present case highlights an unusual gastrointestinal complication of severe malnutrition and the refeeding process.",
  "abstract_shown": true,
  "affiliations": [
    "Division of Adolescent and Young Adult Medicine, Department of Pediatrics, University of California, San Francisco, Box 0110, 550 16th St, San Francisco, CA 94143 USA",
    "Center for AIDS Prevention Studies, Division of Prevention Science, Department of Medicine, University of California, San Francisco, 550 16th St, Box 0110, San Francisco, CA 94143 USA"
  ],
  "article_type": "case report",
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Colbey Ricklefs",
      "orcid": "0009-0009-6214-8557"
    },
    {
      "affs": [
        0
      ],
      "name": "Elizaveta Ignatova"
    },
    {
      "affs": [
        0
      ],
      "name": "Sara M. Buckelew"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/04vjt1mtr52z4.bib",
  "cited_by": 0,
  "doi": "10.1186/s40337-026-01737-0",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13741701/",
  "id": "04vjt1mtr52z4",
  "issns": [
    "2050-2974"
  ],
  "landing_url": "https://doi.org/10.1186/s40337-026-01737-0",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Case Report"
    ],
    [
      "openalex",
      "3203|Eating Disorders and Behaviors"
    ]
  ],
  "openalex": "W7202079895",
  "pdf_url": null,
  "pmcid": "PMC13741701",
  "pmid": "42989405",
  "published": "2026-08-10",
  "publisher": "BMC",
  "ris": "https://research.draconitic.com/paper/04vjt1mtr52z4.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T12:22:42Z",
      "native_id": "PMC13741701",
      "source": "pmc",
      "url": "https://doi.org/10.1186/s40337-026-01737-0"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:3203|Eating Disorders and Behaviors",
      "subfield": "psychiatry"
    }
  ],
  "title": "Hematochezia and colitis in a new diagnosis of anorexia nervosa in an 11-year-old boy: a case report",
  "title_text": "Hematochezia and colitis in a new diagnosis of anorexia nervosa in an 11-year-old boy: a case report",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T12:22:42Z",
  "url": "https://research.draconitic.com/paper/04vjt1mtr52z4",
  "venue": "Journal of Eating Disorders",
  "versions": []
}