What does it mean when a cancerious lung tumor is pressing on the asocicoficous? sorry about spelling.

I'm : I'm not sure what you mean by "asocicoficous." my best guesses are esophagus, which is the tube that goes from your mouth to your stomach and azygous, which is a vein in the chest. In either case, a lung tumor pushing against these structures would be one that is very centrally located in the chest. Centrally located tumors are, in general, more difficult to treat than ones located out farther toward the chest wall. A tumor that simply touches a structure is not the same as one that is invading it. If the tumor is just touching your esophagus or azygous vein, it can probably be pulled away during surgery. If it is invading into one of those structure, surgical removal is unlikely.

Esophagus: The esophagus is the tube that connects your mouth to your stomach. It sounds like you are described a mass in the chest that is pressing against the esophagus. This could cause difficulty swallowing.