PMC3892058_01
Plain abdominal computed tomography and magnetic resource imaging. Plain abdominal computed tomography revealed dilated left renal pelvis with retention of high-density contents (A: axial view, B: coronal view). T2-weighted abdominal magnetic resonance imaging revealed dilated left renal pelvis with retention of low-intensity fluid, which suggested the presence of blood (C).
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Plain abdominal computed tomography (CT) revealed dilated left renal pelvis with high-density contents and hematoma was suspected (Figure 1A, B). No cancer in the renal pelvis or ureter was detected (Figure 1C).
Contrast-enhanced abdominal computed tomography. Contrast-enhanced abdominal computed tomography revealed expansion of hematoma in the pelvis and small aneurysms (arrow) in the segmental arteries of the left kidney (A: axial view, B: threedimensional construction).
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Contrast-enhanced abdominal CT confirmed marked expansion of hematoma in the left renal pelvis and identified microaneurysms in the segmental arteries of the left kidney (Figure 2A, B).
Selective renal angiography. Selective renal angiography revealed renal arteriovenous fistula with microaneurysms (arrows) in the left segmental arteries (A). Catheter embolization using metallic coils was successfully performed (B).
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Selective renal angiography that was simultaneously performed revealed renal arteriovenous malformation with microaneurysms in the left segmental arteries (Figure 3A). Catheter embolization using metallic coils was then successfully performed (Figure 3); thus, hematuria ceased.
Plain abdominal computed tomography revealed resolution of hematoma in the left renal pelvis and presence of metallic coils (A). Abdominal radiography revealed a well-positioned double-J stent (B).
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Subsequent plain abdominal CT confirmed the absence of hematoma in the left renal pelvis (Figure 4A). Abdominal radiography revealed a well-positioned double-J stent (Figure 4B).