I felt a tearing in chest shoulder area when bench pressing right pec is swelled with lot of bruising to the upper arm and bicep what could injury be ?

Tendon injury: A partial or complete tear of the pectoralis major tendon insertion on the upper arm can cause those signs and symptoms. See an orthopedic surgeon who specializes in sports medicine or shoulder treatments to be checked.

Another option: Prolotherapy is an injection treatment which can help repair torn tendons. It is a good alternative to surgery in many cases of torn chest muscles like the pec which you may have torn during bench pressing. In addition, the ribs may require treatment as this trauma could cause them to malfuntion.Osteopathic manipulation is a good adjunct to help the healing process.

Pec Tendon Tear: The main concern from your story is a pec tendon rupture which needs to be confirmed by a physical exam and MRI. An orthopaedic surgeon will be able to correctly diagnose and repair this for you if warranted. Do not delay your treatment because if surgery is necessary it should be performed within the first 2-3 weeks after the injury. Hope this information is helpful. Take care.