Diagnosis of a Gastric Mucosa-associated Lymphoid Tissue Lymphoma by Endoscopic Ultrasonography-guided Biopsies in a Patient with a Parotid Gland Localization
Authors: Queneau P.-E.; Helg C.; Brundler M.-A.; Frossard J.-L.; Spahr L.; Girardet C.; Armenian B.; Hadengue A.
Source: Scandinavian Journal of Gastroenterology, Volume 37, Number 4, 1 April 2002 , pp. 493-496(4)
Publisher: Informa Healthcare
Abstract:
We report the case of a 32-year-old man with a low-grade mucosa-associated lymphoid tissue (MALT) lymphoma of the parotid gland associated with Sjögren syndrome. He underwent an upper endoscopy as part of the screening of a gastric localization which showed a diffuse non-specific gastritis. However, endoscopic ultrasonography (EUS) evidenced a focal wall thickening of the vertical portion of the smaller curvature. EUS-guided biopsies of this area disclosed a MALT lymphoma, whereas biopsies under endoscopy concluded to mild chronic gastritis. The search for Helicobacter pylori infection remained negative. Four months after treatment with anti-CD20 antibodies, EUS showed a diminution of the abnormal thickening of the second layer. Regression was confirmed histologically on new EUS-guided biopsies. MALT lymphoma is usually considered a localized disease; however, dissemination is probably more frequent than initially believed. Our case reflects the importance of a systematic screening for a gastric localization in patients with MALT lymphoma of the salivary glands. In this situation, association to autoimmune disease such as Sjögren syndrome is more likely to explain the gastric location than infection with H. pylori. Endoscopic ultrasonography has a major impact for the staging of gastric MALT lymphoma, but may also help diagnose focal infiltration by the disease.Keywords: BIOPSY; DIAGNOSIS; ENDOSCOPIC ULTRASONOGRAPHY; GASTRIC MALT LYMPHOMA; SJOGREN SYNDROME
Language: English
Document Type: Research article
Publication date: 2002-04-01
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