Fumiko Kinoshita MD, Presenter: Nothing to Disclose

Takashi Kato, Abstract Co-Author: Nothing to Disclose

Kimihiko Sugiura, Abstract Co-Author: Nothing to Disclose

Masayuki Hashimoto, Abstract Co-Author: Nothing to Disclose

Toshio Kaminou MD, Abstract Co-Author: Nothing to Disclose

Toshihide Ogawa MD, Abstract Co-Author: Nothing to Disclose

We have developed a new CT guidance technique using puncture-site-down positioning during the biopsy. The goal of our study was to determine the efficacy and safety of this technique for lung lesions compared with a current technique.

Medical records of 207 patients were retrospectively evaluated, who underwent CT-guided needle biopsy for intrapulmonary lesions between April 1996 and October 2000. This study included 89 cases using a current technique and 118 cases using a puncture-site-down positioning technique. A 20 gauge automated cutting needle without coaxial technique was used in all patients. Medical records were reviewed for lesion size and location, biopsy results, and complications.

Current technique group and puncture-site-down technique group included 50 and 69 malignant lesions, and 37 and 49 benign lesions, respectively. When using current technique, sensitivity was 98.0%; specificity, 97.3%; and diagnostic accuracy, 94.4%. Thirty-seven (41.6%) cases had pneumothorax, with 16 (18.0%) requiring chest tube placement. When using a puncture-site-down positioning technique, sensitivity was 98.6%; specificity, 95.9%; and diagnostic accuracy, 97.5%. Sixteen (13.6%) cases had pneumothorax, with 3 (2.5%) requiring chest tube placement. Other complications were minimal.

CT-guided transthoracic needle biopsy using a puncture-site-down positioning technique is an effective and safe procedure with a high diagnostic accuracy and low complication rate.

Kinoshita, F, Kato, T, Sugiura, K, Hashimoto, M, Kaminou, T, Ogawa, T, A New Puncture-site-down Positioning Technique during CT-guided Transthoracic Needle Biopsy: Comparison with a Current Technique.  Radiological Society of North America 2004 Scientific Assembly and Annual Meeting, November 28 - December 3, 2004 ,Chicago IL. http://archive.rsna.org/2004/4405880.html