Lymphoma is the most common primary tumor of the orbit, accounting for 55% of all orbital malignancies. When divided into histopathological subtypes, extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) comprises the largest proportion. Clinical manifestations are unspecific, but in patients with slow-growing painless orbital mass, or red conjunctival lesion suggestive of 'salmon patch', ocular adnexa lymphoma (OAL) should be suspected. Although the pathogenetic mechanism of ocular adnexal MALT lymphoma (OAML) is not yet fully understood, the relationship between OAML and Chlamydia psittaci has been hypothesized recently, similar to that between gastric MALT lymphoma and Helicobacter pylori. This suggests a new treatment option for OAML; bacterial eradication therapy with systemic antibiotics. Several other treatment methods for OAML have been introduced, but no treatment guidelines have been established yet. In this article, we summarize the current knowledge on the clinical features, pathogenesis, diagnostic methods, therapeutic strategies, and prognosis of OAML.
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http://dx.doi.org/10.12701/yujm.2021.01263 | DOI Listing |
Am J Clin Pathol
March 2025
Department of Pathology, Stanford University, Stanford, CA, United States.
Objectives: Recent studies show that blocking CD47-SIRPα interactions is a promising target in checkpoint inhibition for cancer immunotherapy. However, to date, the expression of CD47 is not well characterized in various hematolymphoid neoplasms.
Methods: This study evaluates CD47 expression in a wide range of hematolymphoid neoplasms using immunohistochemistry on 834 cases.
HCA Healthc J Med
February 2025
St David's North Austin Medical Center, Austin, Texas.
Background: The adaptive immune system consists of T and B lymphocytes, with some B lymphocytes further differentiating into plasma cells that secrete antibodies and make up the humoral immune system. Extramedullary plasmacytoma, mucosa-associated lymphoid tissue (MALT) lymphoma, and plasmablastic lymphoma are all plasma cell-rich lymphoid neoplasms that rarely present in the female genital tract. To date, few case reports of these malignancies arising within the uterine cervix exist.
View Article and Find Full Text PDFSemin Nucl Med
March 2025
Faculty of Medicine, University of Leeds, Leeds LS2 9JT, England; Department of Radiology, St James's University Hospital, Leeds Teaching Hospitals NHS Trust, Leeds, LS9 7TF, England. Electronic address:
Malignant lymphomas encompass a range of malignancies with incidence rising globally, particularly with age. In younger populations, Hodgkin and Burkitt lymphomas predominate, while older populations more commonly experience subtypes such as diffuse large B-cell, follicular, marginal zone, and mantle cell lymphomas. Positron emission tomography/computed tomography (PET/CT) using [F] fluorodeoxyglucose (FDG) is the gold standard for staging, treatment response assessment, and prognostication in lymphoma.
View Article and Find Full Text PDFRev Med Interne
March 2025
Service de médecine interne et immunologie clinique, hôpital Bicêtre, faculté de médecine Paris Saclay, Assistance publique-Hôpitaux de Paris, université Paris Saclay, 94275 Le Kremlin-Bicêtre cedex, France; Université Paris Saclay, Inserm, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases » (IMVA-HB/IDMIT/UMRS1184) Fontenay-aux-Roses, Le Kremlin-Bicêtre, France.
Neurolymphomatoses (NL) are defined as the direct infiltration of the peripheral nervous system (PNS) by lymphomatous or leukaemic cells. The diagnosis of this rare disease is complex, typically relying on peripheral nerve histology, an invasive examination with a risk of sequelae. This diagnostic entity should be considered in the presence of a painful neuropathy, sometimes severe, whether or not associated with immunohaematological abnormalities, and in cases of resistance to first-line immunomodulatory treatments.
View Article and Find Full Text PDFInt J Gen Med
March 2025
Shenzhen Polytechnic University, Shenzhen, 518055, People's Republic of China.
Objective: To investigate immune cell crisis and excess histopathological features during the development and progression of infection in the gastric mucosa.
Methods: One thousand two hundred and seventy-six cases of infection were examined by endoscopic biopsy and endoscopic submucosal dissection (ESD) resection. The relationship between epithelial cells and immune cells and the pathological features of immune cell dysfunction and excess tissue were observed.
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