333. Is there a correlation with manometric achalasia ?
G. Cargill (Paris)

334. Are the causes of this achalasia known ?
M. Gosselin, A. Gosselin, A. Ropert, J.F. Bretagne (Rennes)

335. How useful is myotomy of the crico-pharyngeus ?
C.G. Bremner (Johannesburg)

336. Should myotomy of the crico-pharyngeus be considered when the pharyngeal pressures are near-normal ?
H.J. Stein, T.R. DeMeester (Omaha)

337. Do disorders of swallowing in the elderly fit into the framework of oropharyngeal dysphagia ?
A.C. Duranceau, C. Deschamps, E. Lafontaine, (Montreal).

338. What criteria must be required in the elderly ?
E. H. Metman, C. Gendreau, F. Lombard (Tours)

339. How useful is pneumatic dilatation in this syndrome ?
J. Janssens, G. Vantrappen (Leuven)

340. When all neurological or endocrine disorders have been excluded, do manometric esophageal abnormality exist in the elderly ?
J-N. Blackwell (Newtownabbey)

341. What are the manometric abnormalities of the presbyesophagus ?
E.H. Metman, R. Valmalle (Tours)

342. Can the increased percentage of absent and simultaneous waves with age be regarded as physiologic ?
E-H. Metman, R. Valmalle (Tours)