Solitary Bone Cyst
Typical solitary bone cyst of upper end of humerus abutting against epiphyseal plate in a 13-year-old boy.

Source: Rosai: Surgical Pathology 9th edition
Typical solitary bone cyst of upper end of humerus abutting against epiphyseal plate in a 13-year-old boy.

Source: Rosai: Surgical Pathology 9th edition