- By April Josselyn
Mayo Clinic PathWays: What’s the diagnosis?
This week's case reviews a positron emission tomography scan from an asymptomatic 78-year-old man who presented with a spiculated mass in the lingula — a mass of tissue with spikes or points on the surface in the upper lobe of the left lung. He is a former cigarette smoker, who smoked for 45 years. He has a history of prostate cancer following a prostatectomy in 2007. Can you make the diagnosis?