Adenocarcinoma in situ of Barrett's esophagus diagnosed by endoscopic cytology
Primary adenocarcinoma of the esophagus is uncommon. Turnbull and Goodner found an incidence of 2.4% in 1859 patients at the authors' institution. Approximately 20 cases of adenocarcinoma arising in Barrett's epithelium have been reported. The diagnosis in these cases was made by biopsy done at esophagoscopy. The patient in whom an adenocarcinoma arising in Barrett's esophagus was diagnosed at the in situ stage, illustrates the value of cytologic examination of material obtained at endoscopic examination.