AKT-5406
A 70-year-old heavy smoker (40 cigarettes per day) has a past history of hypertension and atrial fibrillation. Over the past few months he has suffered a chronic cough and has lost approximately 2 stone (about 12.5 kg) in weight. He has been increasingly drowsy over the past few days and his relatives were unable to rouse him this morning. On examination he has a Glasgow Coma Score of 6 and you notice that he has been incontinent of urine and faeces.
What is the most likely diagnosis for this clinical presentation?