Involvement of the inferior vena cave (IVC) tumour thrombus is associated with advance stage of renal cell carcinoma (RCC) as well as other malignant neoplasms such as retroperitoneal tumours, gynaecologic tumours and hepatocellular carcinoma [1‐4]. RCC has a biological predisposition for vascular invasion resulting in vascular thrombus extending to IVC in 4 to 25% of patients [5]. We report an unusual case of small renal mass with level 4 thrombus extending up to the right atrium (Fig. 1).