title: Coexistence of a pulmonary adenocarcinoma with a focal organizing pneumonia.
abstract: We report a case of a pulmonary adenocarcinoma in coexistence with an organizing pneumonia. A 73-year-old male presented with an abnormal shadow on a chest X-ray. The pathological diagnosis, made via a partial resection, was a focal organizing pneumonia with reactive proliferation of the bronchial epithelium. Three years later, two tumors adjacent to the staple line were revealed by computed tomography. A left lower lobectomy was performed and both tumors were diagnosed as an adenocarcinoma. Because the histological findings for the atypical epithelial areas of the previous tumor were similar to the two new lesions in this patient, we regarded these tumors as a marginal recurrence.
authors.affiliation: Department of Thoracic Surgery, Ina Central Hospital, Ina, Japan. tks1976@shinshu-u.ac.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Eguchi
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Takasuna
authors.forename: Masayuki
authors.initials: M
authors.lastname: Fujiwara
authors.forename: Kazuo
authors.initials: K
authors.lastname: Yoshida
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D000077192:Adenocarcinoma of Lung; D000368:Aged; D001706:Biopsy; D018549:Cryptogenic Organizing Pneumonia / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D003951:Diagnostic Errors; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008197:Lymph Node Excision; D008297:Male; D009364:Neoplasm Recurrence, Local; D011013:Pneumonectomy; D011237:Predictive Value of Tests; D012086:Reoperation; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome