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Published online by Cambridge University Press: 29 June 2007
We present one patient who was admitted with a peritonsillar haematoma as a complication of acute tonsillitis and concomitant warfarin therapy for prosthetic aortic valves. While tonsillar haemorrhage as a result of acute tonsillitis has been well described, no cases of isolated haematoma formation have been documented, nor has it been recognized previously as a complication of long-term anticoagulant therapy. We discuss establishing the diagnosis, the likely aetiology and implications of this complication.