Penetrating injuries to anterior chest may result in life-threatening complications such as massive haemothorax,？as a result of injury to the internal mammary artery.？Isolated internal mammary injury is a very rare cause of massive haemothorax and associated with high mortality.？We are presenting this？32-year-old gentleman who sustained a thoracic stab wound and had an emergency right anterior mini-thoracotomy？by extending the stab wound rather than standard thoracotomy or sternotomy.？This case of isolated penetrating IMA injury managed with mini-thoracotomy is the only documented case so far. We are publishing this case report with patient’s both written and informed consent and institutional approval.？This potentially life-threating injury can be managed by mini-thoracotomy with enhanced recovery; however, it is case specific and needs proper judgement.
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