title: [Ultrasonically guided needle biopsy of small mediastinal and peripheral pulmonary nodules].
abstract: From 1983 to 1993, we performed ultrasonically guided percutaneous needle biopsies on 320 thoracic tumors. Of these, 77 tumors were smaller than 3 cm in diameter and were peripherally located adjacent to the chest wall (n = 71) or in the posterior mediastinum (n = 6). We evaluated the efficacy and safety of UGNB for diagnosing these small lesions. The mean tumor size was 2.0 +/- 0.7 cm. Nine nodules were less than 1.0 cm in diameter, 38 were between 1.1 and 2.0 cm, and 30 were between 2.1 and 3.0 cm. Biopsies were done with a 17-gauge Trucut needle; a 21-gauge needle was used to aspirate specimens for cytological study. A definitive diagnosis was made in 31 (77%) of 40 malignant lesions and in 19 (51%) of 37 benign lesions. Complications included pneumothorax (n = 5) and hemoptysis (n = 3), but no special medications were needed. Thus, real-time sonographic guidance is a safe, easy, and reliable biopsy method for small pulmonary and mediastinal nodules adjacent to the chest wall.
authors.affiliation: Department of Respiratory Diseases, Kobe City General Hospital, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Matsumoto
authors.forename: N
authors.initials: N
authors.lastname: Katakami
authors.forename: I
authors.initials: I
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Hajiro
authors.forename: T
authors.initials: T
authors.lastname: Nishimura
authors.forename: T
authors.initials: T
authors.lastname: Hasegawa
authors.forename: M
authors.initials: M
authors.lastname: Okazaki
authors.forename: K
authors.initials: K
authors.lastname: Ishihara
authors.forename: B
authors.initials: B
authors.lastname: Umeda
mesh_terms: D000328:Adult; D000368:Aged; D001707:Biopsy, Needle / Q000379:methods; D005260:Female; D006801:Humans; D008168:Lung / Q000473:pathology*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D008875:Middle Aged; D011237:Predictive Value of Tests; D014463:Ultrasonography