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Perirenal hematoma after a renal biopsy is a common complication that usually resolves spontaneously, but this rarely requires transfusions or surgical/radiological intervention. We report here on a case of a renal perforating artery that was mistaken for renal arterial bleeding in a 53-year-old woman who was complicated with perirenal hematoma after undergoing a percutaneous renal biopsy. On the color and pulsed wave Doppler ultrasonography, linear blood flow was seen in the perirenal hematoma, which extended perpendicularly from the renal parenchyma into the perirenal space, and this linear blood flow exhibited an arterial pulse wave. On CT angiography, the renal perforating artery was demonstrated as a curvilinear vessel coursing tangentially to the renal margin and we decided that it was a pseudolesion caused by the renal perforating artery. A renal perforating artery may be mistaken for renal arterial bleeding after a percutaneous renal biopsy. A renal perforating artery and arterial bleeding can be differentiated by the location and shape seen on a color Doppler examination and the pulse waves characteristics.


Perirenal hematoma after a renal biopsy is a common complication that usually resolves spontaneously, but this rarely requires transfusions or surgical/radiological intervention. We report here on a case of a renal perforating artery that was mistaken for renal arterial bleeding in a 53-year-old woman who was complicated with perirenal hematoma after undergoing a percutaneous renal biopsy. On the color and pulsed wave Doppler ultrasonography, linear blood flow was seen in the perirenal hematoma, which extended perpendicularly from the renal parenchyma into the perirenal space, and this linear blood flow exhibited an arterial pulse wave. On CT angiography, the renal perforating artery was demonstrated as a curvilinear vessel coursing tangentially to the renal margin and we decided that it was a pseudolesion caused by the renal perforating artery. A renal perforating artery may be mistaken for renal arterial bleeding after a percutaneous renal biopsy. A renal perforating artery and arterial bleeding can be differentiated by the location and shape seen on a color Doppler examination and the pulse waves characteristics.


신장주위 혈종은 경피적 신장 생검을 받은 환자에서 흔 하게 볼 수 있는 합병증으로 대부분은 경미하여 특별한 처 지가 필요 없으나 간혹 수혈, 영상의학적 중재시술, 수술이 필요한 경우가 있다. 저자들은 혈뇨를 주소로 내원한 53세 여자 환자에서, 경피적 신장 생검 후에 활성 출혈로 오인한 신장 관통 동맥을 경험하였기에 보고하고자 한다. 색도플 러 초음파 검사에서 신장 관통 동맥은, 신장주위 혈종내에 신실질과 직각을 보이는 동맥파를 지닌 선상 혈류로 보였 기에 이를 활성 출혈로 오인하고 CT 신혈관조영술을 시행 하였으나 신실질에서 신장주위 혈종으로 주행하는 가느다 란 혈관으로 보여서 최종적으로 신장 관통 동맥에 의한 가 성병변으로 진단하였다. 신장 관통동맥은 급성 출혈로 오 인할 수 있으며 색도플러 검사시 위치, 모양과 파형도플러 소견을 통해 감별 할 수 있다.