S H Kim1, H K Lim, W J Lee, J M Cho, H J Jang. 1. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Abstract
BACKGROUND: Needle-tract implantation is an important complication of cutting biopsy of hepatocellular carcinoma (HCC). This study was performed to evaluate the frequency of needle-tract implantation after ultrasound (US)-guided percutaneous biopsy of HCC and to describe triple-phase helical computed tomographic (CT) findings of implanted nodules. METHODS: Between April 1994 and December 1997, 205 patients underwent US-guided percutaneous biopsy for HCC. Review of medical records and the pathology database disclosed seven patients who were found to have needle-tract implantation of HCC. Among these patients, five underwent triple-phase helical CT examination. We analyzed the frequency of needle-tract implantation and triple-phase helical CT findings of implanted nodules, with particular attention to the morphology and enhancement pattern. RESULTS: Seven of 205 patients (3.4%) had tumor implantation along the needle tract at histologic examination after surgical resection. Eight implanted nodules in five patients were found on triple-phase helical CT images (one nodule in three patients, two nodules in one patient, and three nodules in one patient). All implanted nodules has well-circumscribed margins and were ovoid or lobulated in contour. On triple-phase helical CT, six (75%) implanted nodules were isodense compared with abdominal wall muscle on all triple-phase CTs, and two (25%) nodules were hyperdense on hepatic arterial and portal venous phases and isodense on equilibrium phase. CONCLUSIONS: The frequency of needle-tract implantation of HCC after percutaneous needle biopsy was higher than reported previously, and careful attention should be paid during interpretation of CT images in patients with a history of previous percutaneous biopsy.
BACKGROUND: Needle-tract implantation is an important complication of cutting biopsy of hepatocellular carcinoma (HCC). This study was performed to evaluate the frequency of needle-tract implantation after ultrasound (US)-guided percutaneous biopsy of HCC and to describe triple-phase helical computed tomographic (CT) findings of implanted nodules. METHODS: Between April 1994 and December 1997, 205 patients underwent US-guided percutaneous biopsy for HCC. Review of medical records and the pathology database disclosed seven patients who were found to have needle-tract implantation of HCC. Among these patients, five underwent triple-phase helical CT examination. We analyzed the frequency of needle-tract implantation and triple-phase helical CT findings of implanted nodules, with particular attention to the morphology and enhancement pattern. RESULTS: Seven of 205 patients (3.4%) had tumor implantation along the needle tract at histologic examination after surgical resection. Eight implanted nodules in five patients were found on triple-phase helical CT images (one nodule in three patients, two nodules in one patient, and three nodules in one patient). All implanted nodules has well-circumscribed margins and were ovoid or lobulated in contour. On triple-phase helical CT, six (75%) implanted nodules were isodense compared with abdominal wall muscle on all triple-phase CTs, and two (25%) nodules were hyperdense on hepatic arterial and portal venous phases and isodense on equilibrium phase. CONCLUSIONS: The frequency of needle-tract implantation of HCC after percutaneous needle biopsy was higher than reported previously, and careful attention should be paid during interpretation of CT images in patients with a history of previous percutaneous biopsy.
Authors: Michael Mueller; Richard Andrew Mason; Wolfgang Kratzer; Suemeyra Oeztuerk; Mark Martin Haenle Journal: J Med Ultrason (2001) Date: 2012-07-04 Impact factor: 1.314
Authors: C Matthew Hawkins; Alexander J Towbin; Derek J Roebuck; Eric J Monroe; Anne E Gill; Avnesh S Thakor; Richard B Towbin; Anne Marie Cahill; Matthew P Lungren Journal: Pediatr Radiol Date: 2018-02-02
Authors: Kriengkrai Iemsawatdikul; Charles A Gooding; Elisabeth L Twomey; Grace Eun Hye Kim; Robert E Goldsby; Inbal Cohen; Richard J O'Donnell Journal: Pediatr Radiol Date: 2005-03-09
Authors: Richard S Young; Mohammed Aldiwani; Abdul R Hakeem; Amit Nair; Ashley Guthrie; Judy Wyatt; Darren Treanor; Gareth Morris-Stiff; Rebecca L Jones; K Rajendra Prasad Journal: HPB (Oxford) Date: 2012-12-27 Impact factor: 3.647