A rational classification of angiofibromas of the post nasal space.

Angiofibromas of the post nasal space have the potential to extend in all directions along predetermined pathways with a definite mode and chronological pattern. In order to understand their clinical behaviour, methods of treatment and prognosis, a system of clinical staging based on conventional and tomographic observations has been found useful in this series of cases. The classification has been evolved according to the extent of the tumour involvement but also the age of onset, duration, size and area of encroachment including the surgical approach and consequent prognosis. Deficiencies in the earlier classifications are discussed.