I can’t find any information on what other types of breast cancer symptoms there are other than the obvious, breast lumps, discharge, changes in physical appearance etc. Anyone have any other symptoms associated with cancer?

Breast cancer can occur in the ducts, or lobules in the breast and on the skin of the breast. Typically if breast cancer forms in the ducts or lobules, there will be a lump that you can physically feel when you examine your breasts. Other symptoms to look for would be a change in the skin on your breast, a puckering of the nipple, or nipple discharge.

Breastcancer.org has some good information…

How do you call the medical condition whereby a cancer patient presents symptoms of another type of cancer that he does not have (ex. a pancreatic cancer patient with lung cancer symptoms)?

That is not a condition and there isn’t a name for it. Symptoms help in the diagnosis process. If a patient is seen in the emergency room for example, they may be admitted listing a few to several probable diagnosis based on tests done up to that point.