{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T12:20:00Z","timestamp":1788438000710,"version":"build-2803163510"},"reference-count":15,"publisher":"BMJ","issue":"5","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,5,4]]},"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:p>\n                    Allergic bronchopulmonary aspergillosis (ABPA) is a T helper 2 cell-mediated hypersensitive lung disorder in response to\n                    <jats:italic>Aspergillus<\/jats:italic>\n                    that usually affects asthmatic and cystic fibrosis patients. However, it rarely presents as lung collapse.\n                  <\/jats:p>\n                  <jats:p>\n                    We report a case of an elderly male who presented in the emergency department with respiratory distress, with oxygen saturation 80% with room air (RA). On evaluation with examination and radiology, the case was revealed as left lung collapse. Fibreoptic bronchoscopy revealed a huge mucus plug (MP) obliterating the left main bronchus, causing collapse of the entire left lung. The MP could not be completely removed by suction and was extracted with a cryoprobe. Post procedure, SpO\n                    <jats:sub>2<\/jats:sub>\n                    improved to 99% RA with X-ray showing complete lung aeration restoration. A suspicion of ABPA was made.\n                    <jats:italic>Aspergillus<\/jats:italic>\n                    -specific IgE and IgG came positive, along with raised total IgE and peripheral eosinophilia. The patient was started on itraconazole and oral corticosteroids and discharged in stable condition.\n                  <\/jats:p>\n                  <jats:p>This case highlights that it is important to consider an MP with ABPA as a differential in cases of lung collapse after ruling out malignancy.<\/jats:p>","DOI":"10.1136\/bcr-2026-273000","type":"journal-article","created":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T12:30:30Z","timestamp":1779971430000},"page":"e273000","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["When allergy mimics catastrophe: allergic bronchopulmonary aspergillosis presenting as unilateral lung collapse with respiratory failure"],"prefix":"10.1136","volume":"19","author":[{"given":"Deependra Kumar","family":"Rai","sequence":"first","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences Patna, Patna, Bihar, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sreyashi","family":"Pal","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences Patna, Patna, Bihar, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1643-9109","authenticated-orcid":false,"given":"Dhruv","family":"Talwar","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences Patna, Patna, Bihar, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Niraj","family":"Singh","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences Patna, Patna, Bihar, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-7872-8479","authenticated-orcid":false,"given":"Parul","family":"Sharma","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences Patna, Patna, Bihar, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,5,27]]},"reference":[{"key":"2026090305100919000_19.5.e273000.1","doi-asserted-by":"crossref","DOI":"10.1155\/2011\/843763","article-title":"Allergic bronchopulmonary aspergillosis in asthma and cystic fibrosis","volume":"2011","author":"Knutsen","year":"2011","journal-title":"Clin Dev Immunol"},{"key":"2026090305100919000_19.5.e273000.2","first-page":"529","article-title":"Allergic bronchopulmonary aspergillosis","volume":"151","author":"Agarwal","year":"2020","journal-title":"J Med Res"},{"key":"2026090305100919000_19.5.e273000.3","doi-asserted-by":"publisher","DOI":"10.4103\/0971-3026.90680"},{"key":"2026090305100919000_19.5.e273000.4","article-title":"Allergic Bronchopulmonary Aspergillosis (ABPA) Diagnosis Missed in the Context of Asthma Exacerbation Due to Medication 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aspergillosis\/mycoses","volume":"63","author":"Agarwal","year":"2024","journal-title":"Eur Respir J"},{"key":"2026090305100919000_19.5.e273000.9","doi-asserted-by":"publisher","DOI":"10.1016\/j.chest.2018.01.005"},{"key":"2026090305100919000_19.5.e273000.10","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.285.6341.552"},{"key":"2026090305100919000_19.5.e273000.11","doi-asserted-by":"crossref","first-page":"133","DOI":"10.5005\/jp-journals-11010-1181","article-title":"Allergic Bronchopulmonary Aspergillosis Unmasked: Case Series of Varied Pulmonary Presentations","volume":"14","author":"Anand","year":"2025","journal-title":"Indian J Resp Care"},{"key":"2026090305100919000_19.5.e273000.12","doi-asserted-by":"crossref","DOI":"10.1136\/bcr-2022-252828","article-title":"Allergic bronchopulmonary aspergillosis presenting as complete lung collapse with respiratory failure","volume":"16","author":"Palaniappan","year":"2023","journal-title":"BMJ Case 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