Sternum is one of the least common bones of the body to get infected. 54 year old male patient who presented with a tender progressively increasing swelling in the manubriosternal joint junction along with features of fever,loss of appetite and loss of weight.Patient was treated for costochondritis but with no improvement.Patient had increased CRP and came to be MANTOUX TEST POSITIVE,but chest xray and sputum for afb were negative.Patient underwent a CT scan chest revealed Manuobriosternal junction shows erosive changes with suggestive of edema of overlying and adjacent soft tissue on left side at level of second costochondral junction .Minimal soft tissue noted beneath the second left costochondral junction with extension to subpleural location as well as minimal consolidation noted in underlying adjacent left lung.Patient was started on ATT and swelling significantly reduced.Thus,early diagnosis of sternal tuberculosis prevented its complications