The flat bone sternum presents with many variation in gross bone morphology on images or autopsy. In the living subjects,these variations can be incidentally noticed on cross–sectionalimages. Knowing such a variation as sternal foramen is vital in the practice of acupuncture and sternal bone marrowaspiration, to prevent any damage to the heart. Chance cardiac or great vessel injury might prove to be hazardous during sternal puncture,. They can also be commonly misinterpreted as osteolytic lesionsin cross–sectional imaging. Many variations are found in human skeletonswhich may seldom demand distinction frompathologic changes.