We report the radiological and high resolution CT (HRCT) findings of the pu
lmonary involvement in a case of subtype B Niemann-Pick disease. diagnosed
in an asymptomatic 22-year-old man, which was proved by bone marrow biopsy
and sphingomyelinase assessment. In the present case, HRCT showed smooth in
terlobular septa thickening and a subtle ground-glass pattern.