Patients with biliary tract cancers may present with symptoms such as jaundice, dark urine, clay-colored stool, abdominal pain, fever, pruritus, nausea and vomiting, and weight loss. Diagnostic evaluation includes liver function tests and other laboratory testing, along with various imaging methods -- CT, MRI, ultrasound.

Several of Moss' former teammates in Minnesota paid their respects to the recovering Hall of Famer before the Vikings' win Monday night.

Minnesota Vikings fans and players showed support for Moss during 'Monday Night Football,' days after his cancer diagnosis