Diagnostic and therapeutic challenge of unclassifiable enteropathies with increased intraepithelial CD103+ CD8+ T lymphocytes: a single center case series
| Autor: | Christina Hartl, Peter Hasselblatt, Jürgen Finke, Wolfgang Kreisel, Annette Schmitt-Graeff |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Gastrointestinal tract
Pathology medicine.medical_specialty business.industry Gastroenterology Lymphoproliferative disorders medicine.disease Pathogenesis 03 medical and health sciences 0302 clinical medicine Atrophy 030220 oncology & carcinogenesis medicine Intraepithelial lymphocyte 030211 gastroenterology & hepatology Enteropathy Villous atrophy business CD8 |
| Zdroj: | Scandinavian Journal of Gastroenterology. 56:889-898 |
| ISSN: | 1502-7708 0036-5521 |
| Popis: | OBJECTIVES Chronic diarrhea, villous atrophy and/or increased intraepithelial T-lymphocytes (IEL) occur in many inflammatory disorders including celiac disease (CD). However, a definite diagnosis is difficult to make in some patients despite an extensive diagnostic work-up. Clinical outcomes and histological phenotypes of such patients we refer to as unclassifiable enteropathy (UEP) remain unclear. MATERIAL AND METHODS We performed a retrospective single-center analysis of patients with chronic diarrhea, weight loss and increased IEL. Patients with defined etiologies including infections, CD, drugs, immunodeficiencies or neoplasms were excluded. Clinical and histologic/immunophenotypic parameters were analyzed. RESULTS Nine patients with UEP were identified. Small intestinal damage ranged from minor villous abnormalities to complete atrophy while all patients displayed high numbers of CD103+ CD8+ IELs. In contrast to CD, these CD8+ T cells were not confined to the surface epithelium, but also infiltrated the crypts. Additional histological features included apoptotic crypt epithelial cells and mixed inflammatory infiltrates in the tunica propria. Involvement of other segments of the gastrointestinal tract was observed in 7/9 patients. A clonal intestinal T-cell lymphoproliferative disorder developed in 2 patients, one of which had a fatal disease course. The majority of patients responded to corticosteroids, while response to immunosuppressive medications yielded heterogeneous results. CONCLUSIONS We report a patient population with 'difficult-to-classify' enteropathies characterized by various degrees of villous atrophy and strongly increased intraepithelial CD103+ CD8+ T cells in the small intestine which harbor an increased risk for T-cell lymphoproliferative disorders. Clinical course, histology, and response to immunosuppressive therapy all suggest an autoimmune pathogenesis. |
| Databáze: | OpenAIRE |
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