Unusual presentation of more common disease/injury Cardiac tamponade and purulent pericarditis secondary to an oesophageal pericardial fistula as an initial presentation of squamous cell carcinoma of the oesophagus Hafez Mohammad Ammar Abdullah1, Uzma Ikhtiar Khan2, Chetan Wasekar1 and Muhammad Omar1 1 Internal Medicine, University of South Dakota Sanford School of Medicine, Sioux Falls, South Dakota, USA 2 Internal Medicine, Khyber Teaching Hospital, Peshawar, Khyber Pakhtunkhwa, Pakistan...