Thirty-two natural killer (NK) and cytotoxic T-cell lymphomas and 14 noncytotoxic nodal T-cell lymphoma controls were immunostained with the use of monoclonal antibodies reactive against NK-cell receptor (NKR) molecules (CD94, NKG2A, p58.2, p58.1, p140, p70, p50.3). All NK-cell lymphomas (4 nasal/oral and 1 intestinal) expressed at least 1 NKR, the CD94/NKG2A complex. Two were positive for 1 or...

Abstract Background Primary gastric lymphomas are rare tumours and account for 5% of all neoplasms. Esophaphageal even rarer, accounting 1% oesophageal tumours. Incidence these have been increasing over time there is need to understand this tumour subtype. This a single centre study esophagogastric period 15 years. Methods Between 2005 2020; patients who were diagnosed having lymphomas, retrosp...

MALT can develop in nearly every organ as a result of chronic infection or an autoimmune process. If there is prolonged lymphoid proliferation, a malignant clone can emerge and a MALT lymphoma could follow. Certain infections have been associated with MALT lymphomas: There is H. pylori infection in 85-90% of gastric MALT lymphomas. [1] Chlamydophila psittaci has been identified as a possible ca...

Primary cutaneous lymphomas have a distinct clinical behavior and prognosis, and therefore require a different therapeutic approach, as compared with their primary nodal equivalents. The European Organization for Research and Treatment of Cancer (EORTC) classification for primary cutaneous lymphomas recognizes a limited number of cutaneous T-cell lymphomas and cutaneous B-cell lymphomas and is ...

Primary cutaneous B-cell lymphomas are non-Hodgkin presenting only in the skin and represent 25% of all primary lymphomas. Based on their clinical behavior, they classified into indolent intermediate forms. Treatment forms includes surgery, radiotherapy, and, extensive disease, rituximab. We report a case 57-year-old woman with single nodule left arm treated surgical excision 5-mm security marg...

Plasma cell leukemia (PCL) is a rare aggressive variant of plasma myeloma. The differential diagnosis PCL includes multiple myeloma (MM), other leukemias, and lymphomas with abnormal cells circulating in the peripheral blood. In addition, infectious or autoimmune diseases can cause reactive polyclonal plasmacytosis, which could confuse us occasionally. Sometimes, blastoid morphology confusion d...

Recent studies have suggested a probable association between Epstein-Barr virus (EBV) and nasal/nasopharyngeal T cell lymphomas but the role of oncogenes or tumor suppressor genes is poorly understood. We have studied the frequency of p53 expression and its relation to the EBV infection in 33 Korean patients with head and neck (H&N) lymphomas. All cases (23 B cell & 10 T cell) were immunostaine...