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I. ANATOMY AND PHYSIOLOGY AND A REVIEW OF THE LITERATURE

HUGH R. BUTT, M.D.; PORTER P. VINSON, M.D.

Arch Otolaryngol. 1936;23(4):391-413.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

The incidence of esophagitis, in comparison to other diseases, has always been comparatively small. Nevertheless, there has been observed at postmortem examinations at the Mayo Clinic during the past few years an apparent increase in the incidence of inflammation involving the esophagus. The purpose of our inquiry was to determine whether there has been a real increase in the incidence of esophagitis, to study the nature of the condition and, if possible, to ascertain the factor or factors responsible for this increase, apparent or real.

EMBRYOLOGY

In the 4.2 mm. embryo, according to Prentiss¹ (1922), the foregut is differentiated into the pharynx, trachea, lungs, esophagus, stomach, small gut and digestive glands (liver and pancreas).

In about the 6 mm. pig embryo the bronchial arches converge caudad, and the pharyngeal pouch narrows rapidly and is differentiated into the trachea and esophagus. Soon the trachea separates from the esophagus, and . . . [Full Text PDF of this Article]

Author Affiliations
Fellow in Medicine, the Mayo Foundation; ROCHESTER, MINN.

From the Division of Medicine, the Mayo Clinic.

Footnotes
Abridgment of a thesis submitted by Dr. Butt to the faculty of the Graduate School of the University of Minnesota in partial fulfillment of the requirements for the degree of Master of Science in Medicine.

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