non hodgkin lymphoma (nhl) constitutes 5% of all head & neck cancer. the incidence of it has been increased over the last four decades. one of main characteristic of nhl is extranodal presentation that has different pattern in various part of world. a retrospective was designed in a tertiary referral center. it has been done between january 1996 and march 2006. all clinical and pathological cha...

BACKGROUND AND PURPOSE SBO is a life-threatening infection that may have radiologic features similar to those of the neoplastic processes. The purpose of this study was to evaluate the DWI findings in SBO to facilitate the differential diagnosis. MATERIALS AND METHODS The MR imaging findings of 9 patients with SBO were retrospectively evaluated and compared with MR imaging studies from 9 pati...

There is little published information on the ultrasonographic appearance of canine renal lymphoma. The purpose of this retrospective study was to provide additional information regarding the ultrasonographic characteristics of canine renal lymphoma, suggest ultrasonographic description criteria, and evaluate the role of fine-needle aspirate cytology in the diagnosis of this disease. The ultraso...

Introduction: Burkitt lymphoma is an aggressive subtype of Hodgkin lymphoma with a doubling time of 25 hours. It is characterized by a MYC gene coding alteration which results from a translocation of chromosome 8 on the MYC gene locus and immunoglobulin heavy-chain locus (IGH) on chromosome 14. Even though HIV infection is associated to an increased risk of Burkitt lymphoma, th...

despite multiple published studies reporting result of salvage regimens for relapsed and refractory hodgkin's lymphoma, there are no comparisons of different combinations.a total of 44 patients identified with refractory or relapsed hodgkin's lymphoma were considered eligible for this study. the patients were randomly divided into two groups of 22, one of which were treated with gdp regimen (ge...

Glucocorticoid-resistant (CR), in contrast to glucocorticoid-sensitive (CS), mouse lymphoma P1798 was shown to lack antiglucocorticoid receptor immunoactivity. Antibodies raised against the purified rat liver glucocorticoid receptor (GR) cross-reacted with the GR from CS, but not with the GR from CR, P1798 lymphoma. Using highly specific antisera against the GR in an indirect competitive enzyme...

Introduction: Most B-cell malignancies are diagnosed based on morphologic and immunohistochemical criteria. Some cases, however, still present a challenge for the pathologist to discriminate between reactive hyperplasia and neoplastic disorders. Molecular techniques can be used as a helpful diagnostic tool in these cases. In this study, we assessed the value of polymerase chain reaction (PCR) t...

Lymphomas accounts about 10% of all childhood malignancies, and non-Hodjkin's lymphomas are the major group of lymphomas in children, so it's necessary to increase our knowledge about this subject. This descriptive study was performed on 60 cases of non-Hodjkin's lymphoma aged 0-14 years, referring to Mophid Ped. Hospital in seven years (1369-1375). The considered parameters are type, grading,...

Large cell lymphomas and Hodgkin disease may develop during the course of chronic lymphocytic leukemia (CLL). In some cases the transformed cells are Epstein-Barr virus (EBV)-positive and not clonally related to the CLL cells. In other cases the transformed cells have the same clonal rearrangements as the CLL cells. Here we describe a composite lymphoma in a patient with CLL that exhibits a com...

Glucocorticoid-resistant (CR), in contrast to glucocorticoidsensitive (CS), mouse lymphoma P1798 was shown to lack antiglucocorticoid receptor immunoactivity. Antibodies raised against the purified rat liver glucocorticoid receptor (GR) crossreacted with the GR from CS, but not with the GR from CR, P1798 lymphoma. Using highly specific antisera against the GR in an indirect competitive enzyme-l...