抄録
We here report a case of Pulmonary Langerhans cell histiocytosis (PLCH) diagnosed by imprint cytology obtained from thoracoscopic biopsy. Intraoperative tumor imprint smears showed Langerhans cells in a background with eosonophils, macrophage, and lymphocytes. Langerhans cell having noched nuclei and abundant cytoplasm with pseudopodia-like projections. The differentiation of Langerhans cells are epithelioid cells or the cells derive from epithelioid hemangioendothelioma. Langerhans cell can diagnose through the above remarks. In our case since the diagnosis of PLCH was made based upon characteristic cytological findings, cytology was useful in diagnosing PLCH.
