Renal Cell Carcinoma Presenting as an Ampullary Mass: A Case Report and Review of Literature

We present a case of a 60-year-old female patient who has significant medical history of renal cell carcinoma diagnosed 2 years back and had undergone right nephrectomy and chemotherapy. She presented to the hospital with complaints of abdominal pain and jaundice of 2 weeks duration and was found to have periampullary mass lesion causing compression of distal common bile duct on imaging with computed tomography of abdomen. Endoscopic retrograde cholangiography and endoscopic ultrasound showed ampullary mass lesion causing biliary obstruction along with abdominal lymphadenopathy. A temporary plastic stent was placed to relieve obstruction. Fine needle aspiration cytology of the periampullary mass along with immunohistochemical staining confirmed the diagnosis of metastatic renal cell carcinoma.