Author of

• 20180

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  P2.16 - Surgery (ID 717)

  • Event: WCLC 2017
  • Type: Poster Session with Presenters Present
  • Track: Surgery
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/17/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)

  • 23538

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    P2.16-007 - Two Cases of VATS Resection for Endobronchial Protruded Tumors (ID 8884)

    09:30 - 09:30  |  Presenting Author(s): Kunihiko Terauchi
    • Abstract
    • Slides

    Background:
    We report two rare cases of complete resection for endobronchial protruded tumors.
    
    Method:
    Case 1; a-46-year old man with a history of several pneumoniae consulted us because of chest X-ray abnormality. A chest-CT showed atelectasis at medial segment of the right lung with bronchial obstruction. Case 2; a-68-year-old woman was referred to our hospital for persistent couch. Enhanced CT scan showed an endobronchial tumor at basal segment of the right lung with peripheral atelectasis.
    
    Result:
    In case 1, bronchoscopic findings showed a smooth-surfaced polypoid tumor which occluded the medial bronchi of the right lung. An endobronchial biopsy was performed, and it suspected mucoepidermoid carcinoma. He underwent a right middle lobectomy with VATS. The tumor grew as an endobronchial polyp with 25mm in a diameter. On Histopathological findings, the tumor consisted of epithelial cells and myoepithelial cells with tubular or alveolar formation, and it diagnosed epithelial-myoepithelial carcinoma. In bronchoscopy in case 2, the basal segment bronchi were obstructed by a whitish endobronchial tumor, and it caused obstructive pneumonia. A biopsy from the tumor showed no evidence of malignancy. A right lower VATS lobectomy was performed. The tumor showed endobronchial growth without fibrous capsules. Spindle cells with mild atypia were scattered in the tumor. With immunohistological examinations (positive for smooth muscle actin and desmin, negative for estrogen receptor), the tumor was diagnosed as bronchial leiomyoma.
    
    Conclusion:
    Epithelial-myoepithelial carcinoma belongs to carcinomas of salivary-gland-type. Bronchial leiomyoma, arising from bronchial smooth muscle, should be distinguished from benign metastasizing leiomyoma. These tumors are usually covered with normal bronchial epithelium. Endobronchial biopsy is necessary for histological diagnosis. Bronchoscopic examination followed by surgical resection is recommended for endobronchial protruded tumors.
    
    

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