Hello Kam... Welcome to our forum and I am very sorry that you have had to find us under these circumstances, but very glad you are here. We are not medical people, just people who have learned much about bladder cancer by going through it.
My diagnosis in 2010 was primary adenocarcinoma. There was no element of signet ring and the pathology determined that my tumor had originated in the bladder. It is good that your doctor is being thorough in checking for other sources. In the meantime, my advice would be to go for that second opinion, if only to validate the findings of your current urologist. As Sara Anne already mentioned, Mass General in addition to Dana Farber are good options. If it should turn out that you need major surgery, it is important that you are treated by a surgeon who does many of those procedures each year. These are things you can discuss when you have your appointment with the bc specialist in two weeks.
This is a situation where "waiting it out" is not what you want to do. With the tests and scans your doctor has already ordered, your upcoming referral to a specialist, plus the local availability of excellent hospitals, you should be in good hands.
