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Objective To evaluate the clinical value of CT-guided percutaneous biopsy for bone lesions.Methods Forty-Eight patients with different sited bone lesions had received the procedure of CT-guided percutaneous biopsy from July 2003 to January 2005,including 34 cases only with complete clinical records.The procedure was carried out with patient lied on CT table and followed by localization scanning to demonstrate the best sites for puncture and biopsy route.11-14 G bone puncture needle or 18 G trigger type biopsy needle was undertaken to penetrate into the lesion for obtaining specimens under local anesthesia and CT monitoring and in turn for fixation with 10% formalin to have pathologic examination.Results The whole procedure finished within 20-40 minutes with adequate samples obtained for pathologic examination of all cases.Confirmed diagnosis was made in 30 cases with an accuracy of 91.2% and no correlative complications were found.Conclusions The CT-guided percutaneous biopsy is safe and efficient for diagnosis of bone lesions,deserving to be extensively used.(J Intervent Radiol,2006,15: 603-606)
RESUMO
Paraganglioma is an extraadrenal pheochromocytoma originating from chromaffin ceIls distributed in sympathetic nervous systems. This tumor often can produce catecholamines and induce sustained or paroxysmal hypertension, with or without the typical symptams of headache, palpitation and sweating. Paraganglioma without the usual clinical manifestations is not easy to suspect and diagnose. Herein, we report a case of atypical retroperitoneal paraganglioma which was thought to be the pancreas tail mass and result in a paroxysmal adrenergic crisis and fatal dilated cardiomyopathy after the sonographically guided percutaneous biopsy. This rare case warns against the usual practice of percutaneous biopsy for the preoperative diagnosis of intraabdominal or retmperitoneal tumors.