224. What are the effects of PPIs on the extent of CLE?
M.A. Bigard (Nancy)

225. May CLE progress even during treatment?
J.B. Ollyo, E. Brassard, Ch. Fontolliet, Ph. Monnier, M. Savary (Lausanne)

226. Is maintenance of multitherapy mandatory to prevent recurrences?
G. Delpre, U. Kadish (Petah Tikva, Tel Aviv)

227. May Barrett's ulcers respond to a conservative medical treatment, as do esophageal ulcers in squamous epithelium?
G. Delpre, A. Leiser, A. Neeman, U. Kadish

228. Are the early good results of Collis operation in Barrett's esophagus lasting despite the persistence of acid secretion in the gastric tube?
J. Testart (Rouen)

229. What are the results of long-term follow-up of Barrett's esophagus after surgical treatment?
H.W. Pinotti, I. Cecconello, A. Nasi, B. Zilberstein (Sao Paulo)

230. Does complete suppression of acidity and alkaline reflux contribute to healing?
W.A. Williamson (Boston)

231. What are the indications for resection in Barrett's esophagus?
/. Cecconello, A. Nasi, B. Zilberstein, H.W. Pinotti (Sao Paulo)

232. What are the indications of Saidi's operation?
F. Saidi (Tehran)