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The Pyloric Sphincteric Cylinder in Health and Disease by
AD Keet M.B. Ch.B. (Univ. of Cape Town), M.D. (Univ. of Amsterdam),
Ph.D. (Med.) (Univ. of Stellenbosch), was first published by
Springer-Verlag (Berlin Heidelberg) in 1993, under ISBN
3-540-55814-4 Springer-Verlag Berlin Heidelberg New York and
ISBN 3-387-55814-4 Springer-Verlag New York Berlin
Heidelberg. Springer-Verlag returned full copyright to Dr. Keet
after the decision was made to publish the work in full on the
Internet with the aim of making it easily accessible world-wide
for research purposes.
It is seen that many physiological events in which the pylorus is
implicated (e.g. gastric motility, trituration, emptying of liquids and
solids, duodeno-gastric reflux), may be elucidated if consideration is
given to the anatomy of the stomach as described by Cunningham (1906),
Forssell (1913) and Torgersen (1942). The same holds true for pathological
conditions, e.g. gastric and duodenal ulceration, some types of gastritis,
diabetes mellitus and pyloric carcinoma.
The findings obtained at gastroscopy, ultrasonography, manometry,
radionuclide scintigraphy, myoelectric activity and roentgenology are
discussed and compared. The concept of a sphincteric cylinder (as opposed
to a sphincteric ring) at the pylorus is developed.
The project originated in and was managed from the Department of
Roentgenology, Tygerberg Hospital, which is the academic hospital of the
Faculty of Medicine, University of Stellenbosch, South Africa.
Roentgenology (i.e. barium meal or upper gastrointestinal series) was
employed as an investigative rather than a diagnostic tool. In this
particular context roentgenology has certain advantages over endoscopy.
This is not denying the fact that at present endoscopy is the investigation
of choice in upper gastrointestinal pathology.
The author would like to thank Christiaan Keet and Sharon Hastie (London)
and Ilse van Vuuren (Cape Town) for the time and effort spent in publishing
this treatise on the Internet. Without them it would not have been possible.
The Internet edition of The Pyloric Sphincteric Cylinder in
Health and Disease was edited and published in 1998 by PLiG.
The publisher of this book on the Internet can be reached via email at
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The author can be reached via email to firstname.lastname@example.org
or via mail to:
|Dr AD Keet|
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The Editors of the following journals have kindly given permission to
reproduce illustrations, tables and in some instances paragraphs previously
published in the volumes indicated:
A.M.A. Archives of Pathology 1956, Vol. 61 pp 20-23, Fig. 1; Acta Radiologica
1957, Vol. 48, pp 413-424, Fig. 1D, 2B, 3B, 9, 10; Acta Radiologica 1958, Vol. 50, pp 413-429;
Acta Radiologica 1962, Vol. 57, pp 31-44, Fig. 13; American Journal of Roentgenology,
Radium Therapy and Nuclear Medicine 1971, Vol. 113, pp217-228, Fig. 3, 4, 5, 6, 7, 8; American
Journal of Gastroenterology 1978, Vol. 69, pp 144-148, Fig. 1; South African Medical Journal
1953, Vol. 27, pp 117-123; South African Medical Journal 1960, Vol. 34, pp 881-884;
South African Medical Journal 1974, Vol. 48, pp 441-448, Fig. 1, 2; South African Medical
Journal 1982, Vol. 61, pp 78-81, Fig. 1, 2, 3, 4; South African Medical Journal 1982, Vol. 62,
pp 15-18, Fig. 2, 3, 4, 5; South African Medical Journal 1982, Vol. 62, pp 329-333, Fig. 1, 2, 3;
South African Medical Journal 1984, Vol. 66, pp 740-742, Fig. 1, 2, 3.
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