LANGERHANS CELL HISTIOCYTOSIS - A RARE CASE REPORT

Langerhans cell histiocytosis is rare, clonal, and likely neoplastic proliferation of neoplastic Langerhans cells. Mainly occurs in childhood (< 30 yrs) and more in males. Most commonly site being skull. We present a case of 4yr old male child who presented with complaint of painful swelling in lower right arm for 3 months. The child was unable to move his left forearm. On examination, a tender bony swelling was felt at lower end of right humerus. X-ray revealed a lytic lesion. FNAC was performed by 22 gauge needle. Diagnosis of Langerhans cell histiocytosis was rendered which was confirmed by histopathological examination of biopsy tissue from the representative area. Thus, FNAC is valuable is valuable in making primary diagnosis of Langerhans cell histiocytosis.