title: US guidance for thoracic biopsy: a valuable alternative to CT.
abstract: OBJECTIVE
  To determine the role, accuracy, and selection criteria of ultrasonographic (US) guidance for biopsy for thoracic lesions.
  
  
  METHODS
  Imaging-guided thoracic biopsies (n = 86) were performed in 84 consecutive patients. US guidance was used for lesions abutting the chest wall; computed tomographic (CT) guidance was used for all masses surrounded by aerated lung. Mass location and size, guidance modality, histologic results, procedure time, and complications were recorded.
  
  
  RESULTS
  Thirty-four lesions (19 parenchymal, six pleural, six chest wall, three mediastinal) were amenable to US-guided biopsy. The mean mass diameter was 4.3 cm, the mean number of passes was 3.2, and the mean procedure time was 31.4 minutes. A histologic diagnosis was achieved in 31 (91%) patients, including all with small (< 2-cm) masses (n = 9). There was one case of pneumothorax. CT guidance was used in 52 (60%) of 86 cases. Lesions were parenchymal (n = 41), pleural (n = 1), and mediastinal and hilar (n = 10). The mean diameter was 2.9 cm, the mean number of passes was 2.3, and the mean procedure time was 45.2 minutes. A histologic diagnosis was achieved in 37 (71%) patients, including 18 of 27 with a small mass. Complications included pneumothorax (n = 21) and parenchymal hemorrhage (n = 2).
  
  
  CONCLUSIONS
  US is an effective and safe alternative to CT for guidance at biopsy of masses abutting the chest wall. Real-time US visualization allows accurate needle placement, shorter procedure time, and performance in debilitated and less cooperative patients.
authors: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA.
authors: S
authors: S
authors: Sheth
authors: U M
authors: UM
authors: Hamper
authors: D B
authors: DB
authors: Stanley
authors: J H
authors: JH
authors: Wheeler
authors: P A
authors: PA
authors: Smith
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000009:adverse effects / Q000379:methods*; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D008875:Middle Aged; D010995:Pleural Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D011030:Pneumothorax / Q000209:etiology; D015641:Radiography, Interventional; D013896:Thoracic Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D018084:Ultrasonography, Interventional