[Clinical characteristics of localized Langerhans cell histiocytosis in children].

To explore the clinical features of cephalic and facial limited langerhans cell histiocytosis （LCH） in children for improving its diagnosis and treatment. Clinical data of 8 children with cephalic and facial limited LCH were retrospectively analyzed, including the onset time of disease, lesion location, imaging data, clinical manifestations and treatment strategies. One case was preliminarily diagnosed as chronic inflammation with nasal back lesions, then conformed by repeated surgical pathology. Six cases were found to have simple cephalic and facial lumps without pain and swelling. One case was found to have temporal lump with suppurate in the lateral auditory canal. Five cases were treated with surgical excision of lesions. Three cases were treated with surgical excision of lesions, and continued with chemotherapy after confirmed pathological diagnosis. All cases were followed up for 2-3 years with good prognosis. Cephalic and facial limited LCH in children was easy to be misdiagnosed and should be regarded as animportant differential diagnosis of cephalic and facial lumps. Good outcome is achieved by treatment with surgical resection combined with adjuvant chemotherapy.