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ALBERT SJOERDSMA, M.D., Ph.D.

AMA Arch Intern Med. 1958;102(6):936-938.

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

It is only a few years since Thorson¹ and others recognized the association of several unusual signs and symptoms with carcinoid tumors of the small bowel with hepatic metastases. It is apparent now that (1) carcinoid (argentaffinoma) is an endocrine tumor which produces the pharmacologically active agent, serotonin (5-hydroxytryptamine), and (2) the various manifestations of the "carcinoid syndrome" are attributable to secretion of serotonin by the tumors and a disturbance in the metabolism of tryptophan.² Since many cases of the disorder have now been recognized,^3,4 both the general practitioner and the specialist should be aware of this condition and become acquainted with the simple chemical test ⁵ on urine by which it may be diagnosed.

Clinical Features

A series of baffling illnesses extending over a period of years is typical, coinciding with slow growth of the tumor. Current clinical concepts are derived chiefly from study of advanced . . . [Full Text PDF of this Article]

Author Affiliations
Bethesda, Md.

Section of Experimental Therapeutics, National Heart Institute.

Footnotes
Submitted for publication May 12, 1958.

Read before the Section on Internal Medicine at the 107th Annual Meeting of the American Medical Association, San Francisco, June 24, 1958.

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