This is the first description that we are aware of describing the spontaneous resolution of an acute pulmonary vasculitis, possibly secondary to microscopic polyangiitis. Haemoptysis is a common symptom for patients presenting to primary and tertiary referral centres, and pulmonary vasculitis is one of a variety of aetiologies that should always be considered. The pulmonary vasculitides are difficult diagnostic and management problems. They are encumbered by a relative paucity of level 1 evidence addressing their diagnosis, classification, and treatment. This is therefore an important paper to publish because it adds to the global breadth of experience with this important clinical condition.
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