Spontaneous retropharyngeal haematoma: two cases and a review of the literature.

Retropharyngeal haemorrhage is a rare condition. The classical picture is described as a triad of features; superior mediastinal obstruction, anterior displacement of the trachea on a plain X-ray of the neck and subcutaneous bruising appearing on the neck and spreading on to the chest wall (Sandor and Cooke, 1964). Two cases are reported here, neither of which had mediastinal compression. The available literature is summarized.