Has anyone had an Endoscopy for having tightness in throat like your air is being cut off??? Cardiologist said it is not caused by the heart ( Thank you Lord) so starting "process of elimination". -:(( - Heart> No; COPD> ??; PBC> ??; GERD>??; AIH>??. Such fun. Had xray of throat today > won't know anything until sometime next week. - Does anyone else have this problem???