Multimodal imaging techniques for the diagnosis of congenital left renal arteriovenous fistula: A case report

Figure 2 Ultrasonography of the left kidney. A: Two-dimensional image showing several anechoic areas in the middle and lower poles of the left kidney; B: Color doppler flow imaging image showing no blood flow signal in the largest anechoic area of the left kidney and florid blood flow signals in the smaller anechoic areas of the left kidney and near the renal hilum; C: Spectral doppler image showing a burr-like arterial blood flow spectrum characteristic of blood flow within the anechoic area of the left kidney. LRC: Left renal cyst.