LANGERHANS CELL HISTIOCYTOSIS OF THE LUNG IN ASSOCIATION WITH MEDIASTINAL LYMPHADENOPATHY

A 17 year old female was seen because of a non-productive cough and on e episode of blood-tinged sputum. A computerized tomography (CT) scan of the chest showed multiple small cystic lucencies in the upper lobes . The mediastinal CT window revealed concurrent mediastinal lymphadeno pathy, An open lung biopsy showed Langerhans' cell histiocytosis (LCH) . The significance of nodal involvement in LCH of the lung is not know n, but raises the possibility of regional LCH and warrants a further s earch for bone or visceral involvement as well as closer follow-up and monitoring of patients.