RT Journal Article SR Electronic T1 Efficacy of Percutaneous Direct Puncture Biopsy of Malignant Lung Tumors Contacting to the Pleura JF In Vivo JO In Vivo FD International Institute of Anticancer Research SP 2237 OP 2243 DO 10.21873/invivo.13325 VO 37 IS 5 A1 HIROSHI KODAMA A1 HARUYUKI TAKAKI A1 JUNICHI TANIGUCHI A1 ATSUSHI OGASAWARA A1 YASUKAZU KAKO A1 KAORU KOBAYASHI A1 KOICHIRO YAMAKADO YR 2023 UL http://iv.iiarjournals.org/content/37/5/2237.abstract AB Background/Aim: This is a retrospective evaluation of whether percutaneous direct puncture biopsy of lung lesions contacting to the pleura is justified. Patients and Methods: Between August 2016 and July 2021, 163 consecutive patients (100 males, 63 females with a median age of 73 years) who had malignant lung tumors measuring 0.6-12.4 cm (median, 2.9 cm) that contacted to the pleura and underwent percutaneous lung biopsy under computed tomography fluoroscopic guidance using an 18-gauge end-cut needle were examined. The trajectory was direct puncture in 80 patients (49.1%, 80/163), and trans-lung in 83 patients (50.9%, 83/163). Diagnostic yield and major adverse event rates of direct and trans-lung puncture biopsies were compared. Results: No difference was found in diagnostic yield between direct puncture and trans-lung biopsies (93.8% vs. 98.8%, p=0.11). Major adverse events were major pneumothorax (n=13/163, 8.0%), pleural dissemination (n=18/163, 11.0%), and hemothorax requiring arterial embolization (n=1/163, 1.0%). Direct puncture caused major pneumothorax significantly less than trans-lung puncture did (0%, 0/80 vs. 15.7%, 13/83, p<0.001). No significant difference was found between the two biopsy methods regarding the incidence of pleural dissemination (11.0%, 11/80 vs. 8.4%, 7/83, p=0.32). Conclusion: Direct puncture biopsy of malignant lung tumors contacting to the pleura is justified.