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Abstract Wegener's granulomatosis is a multisystemic disease characterized by foci of necrotizing vasculitis and granuloma formation. Subglottic stenosis may occur either as a presenting feature or a late-stage manifestation of the disease, but will occur in approximately 10-20 per cent of cases.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.