Collecting (Bellini) duct carcinoma (CDC) is a rare and very aggressive variant of renal cell carcinoma. Objectives: To describe the radiological findings of a CDC case and to determine its differential diagnosis. Basic procedures: Review the published works regarding this tumor and compare the radiological findings of our case with those of other described cases. Most important findings: CDCs are well-defined tumors with a high hemorrhagic component, limited internal enhancement and nodal metastases. In the differential diagnosis, if the lesion presents an exophytic growth it should include papillary carcinoma, mainly the sarcomatoid variant and the complex benign lesions (complex cysts or hydatids). However, if the lesion combines an infiltrating pattern, other lesions such as medullary carcinoma or lymphoma will be taken into account. Main conclusions: In the presence of solid-cystic hypovascular lesions and regional lymphadenopathy, CDC must be included in the differential diagnosis.