multifocal langerhans’ cell histiocytosis in an adult

Introduction:multifocal langerhans’ cell histocytosis is a rare condition that can affect multiple organs and manifest in various scenarios. while the condition is more commonly found in children, it can also occur in adults.case report:a 43-year-old female presented with refractory otorrhea and had a rubbery neck mass in the left mid-cervical area, as well as an itchy eczematoid lesion in the left parietal area. the otic lesion was eventually resected, and histopathologic examination confirmed the diagnosis of langerhans histiocytosis.conclusions:although rare in adults, langerhans histiocytosis should be considered as one of the differential diagnoses for ear canal polyps. if diagnosed, medical treatment should be pursued.