Cirsoid Renal Arteriovenous Malformation
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Renal arteriovenous malformations (AVM) are rare lesions that can be congenital or acquired. Acquired AVMs are more common, accounting for approximately 70% of cases, and typically are a result of previous biopsy, trauma, infection, malignancy, or renal surgery. Congenital AVMs accounts for the other 20%. Although the exact cause of congenital AVMs is unknown, it is thought to be associated with a defect in the elastic component of the vessel. There are two variants of congenital AVMs. “Cirsoid” variant are described as having a tortuous knotted appearance of multiple arterial vessels with interconnecting fistula.A 57-year-old Caucasian female presents with recurrent urinary tract infections and hematuria.....

http://appliedradiology.com/articles/cirsoid-renal-arteriovenous-malformation
Dr. V●●●k S●●●●●●●●a PT and 1 others like this
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