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Esophagogastroduodenoscopy and bronchoscopy revealed parakeratosis\/hyperkeratosis in the esophagus and nontuberculous mycobacteria pulmonary infection, respectively. Presumed reflux as a unifying cause for his symptoms was confirmed with intra-esophageal pH monitoring, and he was successfully treated with a proton pump inhibitor and a four-drug antimicrobial regimen.<\/jats:p>","DOI":"10.1177\/2050313x251388723","type":"journal-article","created":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T11:56:42Z","timestamp":1763380602000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Esophageal hyperkeratosis in a teenager with asthma and chronic cough complicated by nontuberculous mycobacteria pulmonary infection"],"prefix":"10.1177","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-6550-7566","authenticated-orcid":false,"given":"Naoko","family":"Saito","sequence":"first","affiliation":[{"name":"Division of Pediatric Gastroenterology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA, USA"},{"name":"Department of Pediatrics and Adolescent Medicine, Tokyo Medical University, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Irina","family":"Dralyuk","sequence":"additional","affiliation":[{"name":"Division of Pediatric Pulmonology, Department of Pediatrics, Cedars-Sinai Guerin Children\u2019s, Los Angeles, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Priya R.","family":"Soni","sequence":"additional","affiliation":[{"name":"Division of Pediatric Infectious Disease, Department of Pediatrics, Cedars-Sinai Guerin Children\u2019s, Los Angeles, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shazia","family":"Lutfeali","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Allergy and Immunology, Cedars-Sinai Guerin Children\u2019s, Los Angeles, CA, USA"},{"name":"Department of Medicine, Allergy and Immunology, Cedars-Sinai Medical Center, Los Angeles, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maha","family":"Guindi","sequence":"additional","affiliation":[{"name":"Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura J.","family":"Wozniak","sequence":"additional","affiliation":[{"name":"Division of Pediatric Gastroenterology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA, USA"},{"name":"F. Widjaja Inflammatory Bowel Disease Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,11,17]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1111\/his.12195"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1136\/jcp.2005.026807"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/0016-5085(87)91027-4"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1083\/jcb.99.6.2279"},{"issue":"2","key":"e_1_3_2_6_2","article-title":"An uncommon cause of esophagitis. Answer to the clinical challenges and images in GI question: image 1: esophageal hyperkeratosis secondary to vitamin A deficiency","volume":"139","author":"Herring W","year":"2010","unstructured":"Herring W, Nowicki MJ, Jones JK. An uncommon cause of esophagitis. 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