Left renal mass with venous extension in hemi-azygous vein

Abstract

Extension of renal mass (RM) along venous drainage pathways is a well-recognized entity. All previously reported cases of RM show inferior vena cava (IVC), left renal vein and azygous vein involvement. We report a 55-year-old man who had left RM arising from the upper pole with invasion in left renal vein, IVC and hemi-azygous vein. To our knowledge, we report the first case of RM with venous extension in hemi-azygous vein. Keywords: Renal mass, Renal cell carcinoma, Venous extension, Azygous vein, Hemi-azygous vein