The risk of misdiagnosing neoplastic cells typically infiltrating an epithelium forming a lymphoepithelial lesion as poorly differentiated gastric cancer in endoscopic biopsies, particularly in low-grade mucosa-associated lymphoid tissue (MALT) lymphomas, is described. A 76-year-old woman was referred for management of a poorly differentiated gastric adenocarcinoma. Diagnostic endoscopy in our ...

We describe an unusual case of adult T-cell leukemia/lymphoma (ATL)appearing in a 44-year-old female without leukemic change and systemic lymphadenopathy,which originated from the gastric wall and partially involved the paragastric lymph nodes. No other intraabdominal or intrathoracic organs, such as the liver,spleen,kidneys,adrenals,lungs,or bone marrow,were involved at the time of surgery. Th...

T lymphocyte differentiation is a complex developmental process involving the interaction of lymphoid cells with thymic stromal elements. Humoral factors are known to effect certain steps in intrathymic T cell differentiation (1). There is, however, little doubt that other developmental steps require direct cell contacts between differentiating thymocytes and thymic stroma cells. This is partic...

Lymphoepithelial carcinoma (LEC) of the tongue is a rare subtype squamous cell carcinoma. Histologically, it an undifferentiated with rich lymphocyte and plasma infiltration. The most common location for LEC in head neck salivary glands, oral cavity extremely rare. second case report lateral presented. In addition, review literature was performed, relationship between Epstein–Barr virus infecti...

BACKGROUND/AIM Sjögren's syndrome is a chronic autoimmune systemic disease characterized by polyglandular tissue destruction, leading to keratoconjunctivitis sicca and xerostomia. These patients have 44-fold increased risk of developing salivary gland lymphoma, of which 80% are marginal zone (MALT) type. Having in mind that criteria for distinguishing benign lymphoepithelial lesions from MALT l...