{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T14:09:20Z","timestamp":1790172560020,"version":"4.1.0"},"reference-count":10,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["DEN Open"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>A 73\u2010year\u2010old man visited our hospital due to hyperintestinal peristalsis and diarrhea. He had been undergoing regular annual checkups for dust lung disease. Contrast\u2010enhanced computed tomography scan showed edematous thickening of the rectal wall with contrast effect. A colonoscopy revealed a submucosal tumor\u2010like protrusion in the Rb lesion of the rectum without neoplastic epithelial changes. Forceps biopsies of the overlying mucosa were non\u2010diagnostic; however, endoscopic ultrasound\u2010guided fine needle biopsy revealed that the specimen was poorly differentiated non\u2010small cell invasive carcinoma. Then, we performed a chest computed tomography\u00a0and a newly detected mass lesion in the upper lobe of the right lung. Based on immunohistochemical analysis and image findings, the patient was diagnosed with rectal metastasis from lung cancer. Subsequently, sputum cytology confirmed the diagnosis of lung adenocarcinoma. Rectal submucosal tumor\u2010like protrusions are occasionally encountered. When a non\u2010exposed rectal tumor is identified, it is important to differentiate metastatic diseases, consider endoscopic ultrasound\u2010guided fine needle biopsy, and make a definitive diagnosis through detailed immunohistochemical evaluation and systemic imaging surveillance.<\/jats:p>","DOI":"10.1002\/deo2.70127","type":"journal-article","created":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T03:30:54Z","timestamp":1745897454000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Rectal metastasis from lung cancer diagnosed by endoscopic ultrasound\u2010guided fine needle biopsy: A case report"],"prefix":"10.1002","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-8745-3181","authenticated-orcid":false,"given":"Shinji","family":"Mukawa","sequence":"first","affiliation":[{"name":"Department of Gastroenterology Kyushu Rosai Hospital Moji Medical Center  Fukuoka Japan"},{"name":"The Third 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