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Paraganglioma with acute hyperamylasaemia masquerading as acute pancreatitis.
MedLine Citation:
PMID:  22159946     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Phaeochromocytomas are rare catecholamine-producing tumours. Although classically described to present with headache, diaphoresis and palpitations, they also present in unusual ways; hyperamylasaemia is one such rare presentation. We describe a man with an extra-adrenal phaeochromocytoma (paraganglioma) presenting with diaphoresis, abdominal pain and multi-organ failure. He had hyperamylasaemia of 1,087 (normal range [NR] 44-161) U/L, which mimicked acute severe pancreatitis. Serum lipase and radiographic imaging of the pancreas appeared normal, and the serial amylase levels normalised over six days upon stabilisation of his condition. 24-hour urinary metanephrines of 10,406 (NR 400-1,500) nmol/day suggested a catecholamine-secreting tumour, and metaiodobenzylguanine scintigraphy confirmed this. We postulate that amylase (of the salivary isotype) is released by hypoxic tissues when high catecholamine levels cause vasoconstriction and that fluctuating hypotension decreases organ perfusion. This case highlights the need for awareness of rare presentations of phaeochromocytomas and encourages physicians to rethink the diagnosis when investigations are inconsistent.
Authors:
E T Ho; D S Gardner
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Singapore medical journal     Volume:  52     ISSN:  0037-5675     ISO Abbreviation:  Singapore Med J     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404516     Medline TA:  Singapore Med J     Country:  Singapore    
Other Details:
Languages:  eng     Pagination:  e251-4     Citation Subset:  IM    
Affiliation:
Department of Endocrinology, Singapore General Hospital, Outram Road, Singapore 169608. emily.ho@sgh.com.sg.
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