Can Pectus Excavatum Cause Severe Pain In Chest ?
Thanks for your query,I have read through it in detail .
Pectus excavatum if of sever degree can give rise to pain in the chest due to faulty attachment in some of the several muscle attached to the ribs and the sternum , well in your case I do not suspect them, as the pain you feel is in the inner chest which makes me to consider the stomach problems as the prime cause here.
The stomach cause include mild gastritis to an gastric ulcer, this can easily be ruled our by an upper GI endoscopy.
The other possibility could be stitch as there is positional variation in the pain.If you have any pain in the shoulder ,will support this diagnosis.Very rarely the pain can last long and such presentation common in people with Pectus Excavatum where the diaphragmatic attachments to the bones surrounding and its attachments to the organs inside are at stake.
Do get an Upper GI endoscopy first this will rule out the most expected cause for the chest pain.
Hope I have answered your query. If you have any follow up queries I will be available to answer them.