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The area of pharyngoesophageal sphincter is of great interest to the otolaryngologist. The diseases, dysfunctions, and dangers of inadequate visualization, plus the accidents of instrumentation and spontaneous diseases and poison ingestion, the difficulties of abnormal function have made it a source of interest, worry, and wonder.
For these explicit clinical reasons and for reasons of scholarship this volume of summation of anatomy, physiology, and radiology is particularly welcome. Careful reading can only improve the diagnostic ability and understanding of any clinician however well informed he may already be in this area.
The writing is clear and the style is brief and to the point. Despite the excellent presentation of the material, the book is as notable for its omissions as its information.
If the following were included its value to the clinician would be increased manyfold; techniques of instrumentation; sizes, shapes and types of esophagoscope and their relationship to the