Deep juvenile xanthogranuloma presenting as a chest wall mass: a case report.

Background: Juvenile xanthogranulotna (JXG) is a non-Langerhans cell histocytic proliferation that may appear as an extracutaneous deep-seated lesion and give a broad clinical dijffrrential diagnosis. We report the fine needle aspiration cytologv (FNAC) findings of deep JXG.

Case: A 5-month-old African-American boy was incidentally found to have a chest wall mass on a chest radiograph obtained for an unrelated medical problem.