Treatment of hematuria caused by renal arteriovenous malformation in pregnant patients.

This study is to investigate hematuria in pregnant patients caused by renal arteriovenous malformation and to evaluate the efficacy of superselective renal angiography and embolization used for treatment of renal arteriovenous malformation. Two cases of hematuria in pregnant patients caused by renal arteriovenous malformation were enrolled. Case 1 was a 28-year-old woman with repeatedly intermittent hematuria at week 7 during gestation. Case 2 was a 30-year-old woman with repeatedly intermittent hematuria at week 8 during gestation. B ultrasound and CT were performed to detect hydronephrosis. Renal arteriovenous malformation was diagnosed by selective angiography. Both the patients were treated with embolization. The 2 cases were successfully embolized with different materials including gelfoam and coils. Both of the 2 patients were recovered well and discharged successful after the operation. In conclusion, superselective renal angiography and embolization are effective methods for diagnosis and treatment of renal arteriovenous malformation in pregnant patients.