What could be wrong if you have pain and tightness in left upper back and in left chest?

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Answers.com > Wiki Answers > Categories > Health > Cardiovascular Health > What could be wrong if you have pain and tightness in left upper back and in left chest?

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Pain in upper left chest?  Tightness in left side of chest?  Prolonged pain in upper left chest?  Chest pain to wards to the left of upper back?  Tightness in your chest under your left breast?