Feeling of food getting stuck in my throat. can the ent check for cancer with fiberoptic cameras?

No: No, but a GI doctor can do an endoscopy to evalaute for a problem.

Yes., also GI.: You may have some esophageal obstruction, like schatzki ring, or plummer vinson syndrome, or cancer. A double contrast barium swallow can be done, as well as a flexible esophagogastroscopy to see what it is. Ent can check for throat cancer.

Yes: An ENT specialist should be able to examine throat and related areas. You may wish to consult a GI specialist as an alternataive.