Asymptomatic pneumatosis may be found in patients with lymphangiomatos
is of bone. The authors report three cases from three institutions in
which development of intraosseous gas in association with lymphangioma
tosis of bone was found incidentally at imaging. Soft-tissue emphysema
also developed in two cases. In all three cases, intraosseous gas dev
eloped after biopsy or surgery in the areas involved with lymphangioma
tosis.