PubMed · 3045621
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L Visentin. 1988-06-11. Coeliac disease.. https://doi.org/10.7748/ns.2.36.26.s61
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Coeliac disease (CD) is a disorder of the small intestine, characterized by villous atrophy, due to an intolerance to dietary gluten in genetically susceptible individuals, which responds to gluten withdrawal. The underlying immunological mechanisms causing the disorder are still being worked out. In recent years a wide range of clinical presentations has become increasingly apparent, as has a lengthening list of associated conditions. Severe malabsorption with steatorrhoea and profound weight loss is seen infrequently, perhaps as a result of earlier diagnosis and the recognition of 'silent' and 'latent' disease. The prevalence of CD as judged by population screening with, in particular, anti-endomysial antibodies, appears to be much higher than that found with clinically apparent cases. There are a variety of well recognized complications, the commonest probably being osteopenia and osteoporosis. The marked increased risk of lymphoma can be avoided by a strict gluten-free diet. Follow-up of patients needs to be lifelong with prompt investigation of new symptoms and blood test abnormalities.
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HISTORY: An increased concentration of free T3 (fT3) with normal TSH was repeatedly measured in a 58-year-old man with diarrhoea. Hyperthyroidism was diagnosed and he was treated with thyrostatic drugs. INVESTIGATIONS: Referred to our clinic, fT4 concentration, determined by routine ELISA, was found to be raised to 33.9 pmol/l, while fT3 and TSH levels were within normal limits. But the equilibrium-dialysis method gave a normal serum level also for fT4. Gastroscopy suggested coeliac disease, confirmed histologically. TREATMENT AND COURSE: The symptoms quickly improved on a gluten-free diet and the fT4 level returned to normal values even on routine measurement. CONCLUSION: The raised fT4 level with non-suppressed TSH was only revealed as a false finding by special non-routine laboratory methods. The reversibility and the close time relationship of the reported laboratory data with the clinical manifestations of the concomitant coeliac disease strongly suggested that changes in serum in the course of the latter disease played a role in these misleading laboratory results. An interference of coeliac disease with some laboratory tests has been previously described.