Primary renal carcinoid: computed tomography, ultrasound, and angiographic findings

We present a rare case of primary renal carcinoid tumor that metastasized to the liver and kidneys. The tumor and the metastases were hypovascular angiographically, did not enhance on CT, and were hyperechoic with a hypoechoic halo on ultrasound. A similar pattern has been seen in a few cases previously reported in the literature.