A 72 year old male presents with low back pain of insidious…
A 72 year old male presents with low back pain of insidious onset. He has a history of prostate cancer 4 years ago that was successfully treated with chemotherapy. His father was diagnosed with colon cancer when he was 75 years old. He reports having 2-4 alcoholic drinks 3x per week and smoked 1 pack of cigarettes’ per day from the ages of 20-25 when he served in the military as a young man. Which of the following findings is most concerning for possible cancer as a cause of back pain.