Metal allergy to titanium bars after the Nuss procedure for pectus excavatum.

The Nuss procedure requires the placement of metal bars in the chest cage to repair pectus excavatum. Metal allergies are one of the complications associated with this procedure. Given that titanium is a biocompatible metal, it induces few allergic symptoms. Therefore, titanium bars are recommended for patients with metal sensitivity. We report the case of a 17-year-old boy with pectus excavatum who had a metal allergy to titanium bars, which occurred after the Nuss procedure. The administration of oral steroids is useful for treating metal allergies. Metal allergies to titanium bars are very rare; however, they can still occur.