title: New indication for preoperative marking of small peripheral pulmonary nodules in thoracoscopic surgery.
abstract: The aim of this work was to analyze parameters to determine the possibility for detection of tumor location, and clarify the indication for preoperative marking of small peripheral pulmonary nodules in thoracoscopic resection. In a series of 97 patients who underwent video-assisted thoracoscopic surgery, information on standard uptake values (SUVs) and the detectability of tumor location was assessed. In patients whose lesions were <15 mm in diameter and where the distance to the pleura was >10 mm, lesions were not detected. Multivariate analysis to determine the factors related to the possibility of detecting tumor localization revealed that the distance to the pleural surface (P=0.0001), and the ratio of solid portion (P=0.0104) were statistically significant. In the non-solid tumor group, we should perform preoperative marking for tumors located more than 3 mm in depth from the visceral pleura. In the solid tumor group, the linear function (depth=0.4×size-0.9) may be used to separate detectable and undetectable groups. However, the sensitivity was 90.3% even if this formula was applied. Here we advocate the algorithm for detection of indication for preoperative marking using the ratio of solid portion, tumor size and SUV of fluorodeoxyglucose positron emission tomography.
authors: Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Takara-machi 13-1, Kanazawa, 920-8640, Japan. masatamu2007@yahoo.ac.jp
authors: Masaya
authors: M
authors: Tamura
authors: Makoto
authors: M
authors: Oda
authors: Hideki
authors: H
authors: Fujimori
authors: Yosuke
authors: Y
authors: Shimizu
authors: Isao
authors: I
authors: Matsumoto
authors: Go
authors: G
authors: Watanabe
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D016009:Chi-Square Distribution; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D007564:Japan; D016015:Logistic Models; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010994:Pleura / Q000000981:diagnostic imaging / Q000601:surgery; D049268:Positron-Emission Tomography; D011237:Predictive Value of Tests; D011300:Preoperative Care; D019275:Radiopharmaceuticals; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D003074:Solitary Pulmonary Nodule / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery*; D020775:Thoracic Surgery, Video-Assisted; D014057:Tomography, X-Ray Computed; D055815:Young Adult
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18