[Upper airway obstruction by retropharyngeal haematoma: a complication of central venous catheter insertion attempt].

Retropharyngeal haematomas are a rare complication of central venous catheters insertion. A case of a retropharyngeal haematoma in a patient treated by acetylsalicylic acid is reported. This case emphasized the difficulty in diagnosis. Close airway surveillance must be done and can lead to surgery in case of airway obstruction.