Subcutaneous cervical emphysema and pneumomediastinum due to a lower gastrointestinal tract perforation.

This case report describes a 69-year-old man presenting with an extensive subcutaneous emphysema in his neck and generalized peritonitis caused by a lower gastrointestinal tract perforation. This case emphasizes that subcutaneous emphysema patients with negative thoracic findings should be scrutinized for signs of retroperitoneal hollow viscus perforation.