[Giant dermoid cyst of sternum]. / Quiste dermoide gigante de esternón.

Dermoid cysts are lesions located in the subcutaneous tissue, containing epidermis and epidermal appendages and being common found in the head and neck. However, such lesion can be found in other parts of the body. The present case, shows an atypical presentation of a giant dermoid cyst on the sternum of a child. Although atypical, the dermoid cyst must be considered in the diagnosis of sternal masses.