Extensive congenital asymptomatic renal arteriovenous malformation

Congenital renal arteriovenous malformation presenting as severe hypertension.

Hypertensive patients presenting at the extremes of age may have a secondary cause of hypertension. Congenital arteriovenous malformation (AVM) and acquired arteriovenous fistula (AVF) are rare causes of secondary hypertension w1–10x. Acquired AVFs tend to be single linear connecting vessels and comprise 70–80% of renal arteriovenous abnormalities and usually result from trauma, biopsy, surgery...

Incidentally discovered renal arteriovenous malformation

A healthy 42-year-old woman presented proteinuria and hematuria on regular medical check-up two years ago. Her other laboratory examinations did not show any abnormal findings, including renal function, anti-neutrophil antibody, anti-neutrophil cytoplasmic antibody, C3, C4, or immunoglobulin. Her blood pressure was also normal. Because flank pain had developed, color Doppler ultrasound of the k...

Extensive congenital malformation of the skin.

Renal arteriovenous malformation presenting with massive hematuria

Renal arteriovenous malformations are abnormal communications between the intrarenal arterial and venous systems. They are a rare cause of hematuria. Color Doppler ultrasonography, multislice CT angiography, and DSA are important tools for making the diagnosis. We describe the case of a 62-year-old man with renal arteriovenous malformation who presented with gross hematuria.

Teaching NeuroImages: spontaneous asymptomatic occlusion of a cerebral arteriovenous malformation.

Adam Strzelczyk, MD Ulrich Sure, MD Felix Rosenow, MD A 34-year-old man with refractory epilepsy due to an arteriovenous malformation (AVM) of the right postcentral gyrus (figure, A) was evaluated for epilepsy surgery.1 After study of the size, location, and depth of the lesion, we decided to defer resection, radiosurgery, and embolization because of concern that intervention would result in ne...