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Letters to Nature
Nature 199, 190-191 (13 July 1963) | doi:10.1038/199190b0
Pinealoma : a Variety of Argentaffinoma?
ISAAC COSTERO, ROSARIO BARROSO-MOGUEL & KENNETH M. EARLE
- National Institute of Cardiology, Department of Pathology, Mexico City, Mexico.
- Armed Forces Institute of Pathology, Washington, D.C.
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Abstract
SEROTONIN (5-hydroxytryptamine) contained in the gastrointestinal tract is intimately associated with the Kultschitzky type of cells1. Carcinoid tumours arise from such cells so their serotonin content is very important2; apparently, the majority, or maybe all, the symptoms of the so-called carcinoid syndrome must be attributed to the presence of serotonin at the level of the tumour3.
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