Metastatic renal cell carcinoma presenting as a gallbladder polyp

Clear cell renal cell carcinoma accounts for approximately 3% of all adult malignancies and 85% of all primary renal malignancies. Clear cell renal cell carcinoma (ccRCC) metastasis to the gallbladder is extremely rare and often presents as a metachronous metastasis following several years of tumour free disease. We report a case of a 78-year-old female with metastatic ccRCC to the gallbladder. During follow-up ultrasound imaging, a polypoid gallbladder mass was discovered incidentally. The previous medical history is significant for total nephrectomy for left-sided ccRCC 6 years ago. A new suspicious intraluminal polypoid gallbladder mass in a patient with a history significant for clear cell renal cell carcinoma should alert the physician to consider metastatic clear cell renal cell carcinoma.