Erdheim-Chester disease (ECD) was first reported by J.
Erdheim and W. Chester, in 1930. There are less than 250
reported cases till date. We report a case of ECD in a 16-
year-old Malay male, who initially presented with elusive
anemic symptoms with more specific symptoms of bony
pain, cardiorespiratory and hepatic involvement evolving as
the disease progressed.