Pseudotumor deltoideus


Pseudotumor deltoideus (prominent deltoid muscle insertion) is an anatomical variant which can be confused with bone neoplasms. Complaint and radiographic changes in this location may lead to misdiagnosis by those unfamiliar with this anatomical variant. Well-defined borders and the typical location on the lateral aspect of the humerus at the level of deltoid insertion can help make the diagnosis and differentiate from a neoplasm.