Introduction: This study is aimed to assess the prevalence and characteristics of head and neck lymphoma in a defined group of an Iranian population.   Materials and Methods: In this retrospective study, 126,450 biopsy reports from two referral Pathology Departments, (Tehran, the capital of Iran) were evaluated. In cases with head and neck lymphoma, other variables such as age, sex, specific lo...

Background: Lymphoma is a malignant proliferation of lymphoid cells. External T-cell lymphoma is very rare. Lymphomas are neoplastic growth of lymphocytes caused by organisms like EBV, HIV, etc. This malignancy is classified as Hodgkin’s lymphoma and non-Hodgkin’s lymphoma. Oral lymphomas account for a small percentage of head and neck malignancies, and intraoral lymphoma is rare and mostly see...

background: breast implant associated anaplastic large t- cell lymphoma is a rare type of non-hodgkin lymphoma, with a reported incidence of 0.3% per 100,000 women with breast prosthesis per year. it presents most commonly as a peri-implant seroma, but may also present as a capsular mass, tumor erosion through skin, in a regional lymph node, or found incidentally during revision surgery. case p...

Extranodal natural killer cell (NK) T lymphoma (ENKL) is a rare type of non Hodgkins lymphoma, accounting for 5% 10% total NHL cases.

non-hodgkin lymphoma usually presents with generalized lymphadenopathy, but it can also involve any part of the human body. lymphomatous involvement of muscles is a rare presentation and has been reported to occur in only 1.1% in non-hodgkin lymphoma. here we, present a 32 year-old iranian man with primary involvement of spleen, bone, bone marrow and muscle, mimicking soft tissue sarcoma; core ...

malignant lymphoma may occur in the oral cavity and oropharynx, but is most commonly located in waldeyer's ring, particularly in the palatine and lingual tonsil. the occurrence of malignant lymphoma in the tongue is very rare. clinical features are nonspecific ulcerative lesions that do not heal. in the literature, the majority of cases are non-hodgkin’s lymphoma, diffuse large b cell type; how...

Actinomycosis is a rare anaerobic, gram-positive bacterial infection caused by Actinomyces. As an site for the disease, cervicofacial area common but nasal cavity and nasopharynx are rare. causes chronic purulent granulomatous characterized extensive infiltration, necrosis, bone destruction on CT. Extranodal natural killer/T cell (NK/T cell) lymphoma, type more in East Asia than elsewhere, comp...

micrornas are 19-22 nucleotide rnas involved in such important processes as development, proliferation, differentiation and apoptosis. different mirnas are uniquely expressed in lymphoid t cells, and play a role indevelopment and differentiation of various subtypes by targeting their target genes. recent studies have shown that aberrant mirna expression may be involved in t cell leukemogenesis ...

Mycosis fungoides (MF), the most common type of cutaneous T-cell lymphoma, is histologically characterized by atypical T lymphocytes with cerebriform nuclei that infiltrate the epidermis. Alope

: Peripheral T-cell lymphomas (PTCLs) represent a heterogeneous group of non-Hodgkin's (NHL), characterized by poor outcome, accounting approximately for 10%-15% all non-Hodgkin in the western countries, and with higher prevalence Asia. Cyclin D1 immunoreactivity is characteristically seen mantle cell lymphoma. It also observed hairy leukemia, plasma myeloma proportion diffuse large B-cell lymp...