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CASE REPORT article

Front. Oncol.
Sec. Thoracic Oncology
Volume 14 - 2024 | doi: 10.3389/fonc.2024.1447843

Case report: Dynamic 18 F-FDG PET/CT display of a bronchial mass as a second cancer mimicking mediastinal lymph node in apatient with gastric carcinoma survivor

Provisionally accepted
Shengyun Huang Shengyun Huang *Yarong Zhang Yarong Zhang Xieraili Wumener Xieraili Wumener Yuanyuan Lei Yuanyuan Lei Ying Liang Ying Liang
  • Cancer Hospital Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China

The final, formatted version of the article will be published soon.

    A 70-year-old woman underwent distal partial gastrectomy due to gastric adenocarcinoma in 2015. After 6 years, ago. Fthe follow-up CT revealed a suspicious mass in the right hilar of the lung mimicking mediastinal lymph nodes. The further dynamic PET/CT images showed a bronchial mass located in the right intermediate bronchus with increased FDG uptake and relatively high Ki value which may imply possibility of malignancy. However, the symmetrical mediastinal lymph nodes had intense FDG uptake but relatively low Ki value, suggesting benign lesions. The initial pathological result of bronchoscopy biopsy was considered as suspicious for metastatic gastric adenocarcinoma. Bbut then was found consistent with middlegrade mucoepidermoid carcinoma as a second primary cancer without metastatic lymph nodes confirmed by complete surgical procedure (lower bilobectomy + hilar and mediastinal lymphadenectomy) surgical resection. 18 F-FDG PET/CT has important value in follow-up of indeterminate findings for patients with history of tumor. Moreover, dynamic quantification parameters such as Ki may be additional helpful to identify malignancies in some equivocal situations.

    Keywords: Bronchial mass, Dynamic PET/CT, FDG, Mucoepidermoid carcinoma, Second cancer

    Received: 12 Jun 2024; Accepted: 02 Sep 2024.

    Copyright: © 2024 Huang, Zhang, Wumener, Lei and Liang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Shengyun Huang, Cancer Hospital Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China

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