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T. Oyaidu
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P2.02 - Poster Session/ Treatment of Localized Disease – NSCLC (ID 210)
- Event: WCLC 2015
- Type: Poster
- Track: Treatment of Localized Disease - NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/08/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P2.02-020 - Determining the Location of Early-Stage Lung Cancer Using an Endoscopic Ultrasound Device during VATS Procedure (ID 1185)
09:30 - 09:30 | Author(s): T. Oyaidu
- Abstract
Background:
Recently, it is possible to detect early-stage lung adenocarcinoma by using computed tomography. However, during video-assisted thoracic surgery (VATS), it is difficult to determine the location of early-stage lung adenocarcinoma without pleural indentation. In this study, we used an endoscopic ultrasound device to identify the location of early stage lung adenocarcinoma during VATS.
Methods:
We enrolled patients with a pure ground-glass-opacity (GGO) lesion (considered adenocarcinoma in situ) of less than 2 cm, which was considered undetectable during VATS because it was located inside the lungs, and was not adjacent to the visceral pleura. After single lung ventilation, we inserted the endoscopic ultrasound device (UST-5536-7.5, Hitachi Aloka Medical, Tokyo, Japan) through a 12-mm thoracoport .
Results:
Three patients (age range: 49–69 years) were enrolled. The diameter of the three lesions was 7 mm, 10 mm, and 12 mm, respectively. These lesions could not be observed through the visceral pleura and could not be palpated. The endoscopic ultrasound device detected each lesions as an area with high-signal intensity. The location of each lesion was determined on the basis of the intersection of the device when inserted from two different thoracoports;,the tumors were then resected. Pathological examination revealed adenocarcinomas in situ in 2 patients and an atypical adenomatous hyperplasia in 1. Local recurrence after surgery was not observed in any of the patients.
Conclusion:
Detecting a GGO lesion by using an endoscopic ultrasound device is an easy and effective method during the VATS procedure to determine the location of early-stage lung adenocarcinoma.
