Breathless w/ Tissue Expander - Normal?

Unfortunately, significant discomfort frequently occurs following tissue expanders, especially if a high volume is initially placed.  If your symptoms are severe, they may be related to a blood clot, or other systemic problem.  More commonly, you are just experiencing the pressure against your chest, and perhaps having your surgeon take some saline out may help.  Sometimes, an anti anxiety medication can help, such as valium.  Your doctor should be making these decisions for you.  I recommend you go see him/her to rule out any life threatening issue.

Shortness of breath after surgery always needs to be addressed and worked up by your physician. Some women do experience a feeling of tightness with deep breaths due to the weight the expander. You should see your surgeon asap.

This is NOT normal.   Shortness of breath after any surgery could suggest several problems that may not be associated with your tissue expander implant.   Given that you are a cancer patient and have undergone surgery, I would be concerned with a possible blood clot (DVT) or a blood clot in your lungs (PE).  I recommend you seek immediate medical attention or go to your nearest emergency room.