Had emergency egd for stuck food, had inflammation in esophagus, stomach & duodenum. biopsy negative. are all infections checked or only certain ones?

Hard to know...: When trauma is involved, most endoscopists will minimize biopsies during the "rescue" endoscopy, opting instead to bring the patient back for a second look when the inflammation has calmed down. It is at the time of this second endoscopic look that dilation and extensive biopsies can be more safely pursued. Your biopsy may have included a check of cmv, herpes, fungus, h.Pylori or none of these.

Food impaction: Infections in esophagus usually do not cause food impaction. Biopsy is enough to ruled out most infection but physician must alert pathologist if is concern about specific infection as sometimes special stains one disorder that received attention is eosinophilia esophagitis. It is thought to be related to food allergies. Can be cause of food impaction, diagnosed by endoscopy with frequent biopsies.