This patient demonstrates a typical presentation, a typical clinically widespread upper neck infection after a dental procedure, and the radiological features of Ludwig's angina, with emphasis on the role of CT in the diagnosis and follow-up of complications. 

Ludwig's angina is a rare and potentially life-threatening condition characterized by a rapidly spreading infection involving the neck's submandibular, sublingual, and submental spaces. In this case, the infection progressed rapidly with necrotizing deep soft tissue infection extending throughout the neck to the upper thorax.

Case courtesy of Dr Mostafa Elshimy, Dr Ahmad Khalil, and Dr Safwat Almoghazi.