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LETTER
A new cause for CA19.9 elevation: heavy tea consumption
  1. M Howaizi1,
  2. M Abboura1,
  3. C Krespine2,
  4. M-S Sbai-Idrissi3,
  5. O Marty4,
  6. M Djabbari-Sobhani5
  1. 1Service de Gastro-entérologie et Hépatologie, Groupement Hospitalier Eaubonne-Montmorency, Eaubonne 95602, France
  2. 2Service de Pneumologie, Groupement Hospitalier Eaubonne-Montmorency, Eaubonne 95602, France
  3. 3Service de Chirurgie Viscérale, Groupement Hospitalier Eaubonne-Montmorency, Eaubonne 95602, France
  4. 4Centre d’Exploration de l’Appareil Digestif, Clinique Gastrolouvre, Paris 75001, France
  5. 5Service de Radiologie, Groupement Hospitalier Eaubonne-Montmorency, Eaubonne 95602, France
  1. Correspondence to:
    M Howaizi, Service de Gastro-entérologie et Hépatologie, Groupement Hospitalier Eaubonne-Montmorency, 28 rue du Dr Roux, Eaubonne 95602 cedex, France;
    howaizi{at}free.fr

https://doi.org/10.1136/gut.52.6.913

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    Serum carbohydrate associated antigen (CA19.9) is a reliable tumour marker of biliopancreatic malignancies. A number of benign diseases are also known to be related to CA19.9 elevation. Here we report a case of markedly raised levels of CA19.9 associated with heavy tea consumption.

    Case report

    A 52 year old woman was referred to our unit for epigastric pain and anorexia of two months’ duration. She also complained of nausea and a 2 kg weight loss. Her past medical history was unremarkable. She was a non-smoker and denied alcohol abuse or medication intake but remarked on overconsumption of warm black tea for several months (1.5–2 litres/day). Physical examination was normal.

    Laboratory data demonstrated normal ranges for electrolytes, liver function tests, blood count, urea, creatinin, C reactive protein, amylase, and lipase. Fasting blood glucose, triglycerides, cholesterol, …

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