[Non-vascular interventional radiology: percutaneous needle biopsy under imaging].
Recent advances in diagnostic imaging increase the opportunity to detect small lesions. Percutaneous needle biopsy (PNB) under imaging is a part of interventional radiology and very useful to diagnose such small lesions. PNB of lung tumors is performed by 21G-screw needle under CT imaging of fluoroscopy. In 78 cases, accuracy was about 80% and no major complications were observed except one (bleeding). PNB of the liver can be performed by 15-17G cutting type needle. Bleeding is easily avoided by using the trans-normal liver tissue route. PNB of the pancreas and percutaneous pancreatic ductography also can be done using trans-hepatic or trans-gastric route under US imaging without major complications. PNB by 21G needle can obtain a block material for pathological diagnosis. There is much gas in the intrapelvic space, so PNB to this area is usually performed under CT imaging. Image-guiding PNB to subcutaneous organs like thyroid gland and breast is more useful than so-called blind biopsy because of its exactitude. Calcified non-palpable breast cancer is demonstrated by only this method. Image-guiding PNB is non-invasive, exact and a safe method to diagnose small lesions, and the popularization of the method is required.
Dept. of Diagnostic Radiology, Aichi Cancer Center.
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Arai
D001707:Biopsy, Needle / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D009369:Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography