Pulmonary Langerhans cell histiocytosis (PLCH): a new UK register.

Pulmonary Langerhans cell histiocytosis (PLCH) is a rare interstitial lung disease of unknown aetiology. We aimed to characterise a UK-wide cohort of patients with PLCH and compare diagnostic and management methods in specialist and non-specialist centres. 106 cases (53 hospitals) identified. Complete data received in 67 cases (53.7% female, age 37.1±14.4 years). 96% current or ex-smokers. Treatment; smoking cessation (79%), corticosteroids (30.6%), cytotoxic therapy (26.9%) and lung transplant (6%). Patients at specialist centres received cytotoxic drugs more often (p=0.0001) and survival appeared higher. This dataset indicates a more even gender distribution than previously documented. It suggests variation in clinical management and outcomes achieved dependent on clinical experience. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.