“…In the child with its normal small narrow nose there is usually bilateral fluid, but the older children are, the more liable is the condition to become unilateral, until in the adult it is characteristically unilateral. Kersley and Wickham (1966) found that 6o, or 30 per cent., of 200 cases were unilateral, and in a similar series here of 210 cases 73, or 35 per cent., were unilateral. These unilateral cases usually have obvious septal deviations.…”