We investigated 16 lymphoid proliferations occurring in the ocular adnexa, salivary glands, breast, and thyroid gland and satisfying the histopathologic and immunophenotypic criteria of benign lymphoid hyperplasia for the presence of clonal rearrangements of the antigen receptor, c-myc, bcl-1, and bcl-2 genes and Epstein-Barr virus (EBV) DNA sequences. Each of these 16 extranodal, noncutaneous ...

Diffuse large B-cell lymphoma is the most common form of lymphoma. It usually begins in the lymph nodes; up to 40% may have an extranodal presentation. According to a definition of primary extranodal lymphoma with presentation only in extranodal sites, there are reports of large B-cell lymphomas limited to liver or spleen as separate entities, and to date there have been only three documented c...

Ann Saudi Med 29(1) January-February 2009 www.saudiannals.net 55 Lampert and Lennert in 1961 were the first to describe what is now known as Rosai-Dorfman disease (RDD). Subsequently in 1969, Rosai and Dorfman described 4 cases of a disease they called sinus histocytosis with massive lymphadenopathy (better known as RDD).1 In 1972 they analyzed 30 additional cases, establishing RDD2 as a clinic...

BACKGROUND In contrast to gastric extranodal marginal zone mucosa associated lymphoid tissue (MALT) lymphomas, there is little consensus on the value and clinical consequences of extensive staging at diagnosis and during follow-up in non-gastric MALT lymphomas. DESIGN AND METHODS Complete clinical information at presentation and during follow-up was collected for 72 patients with non-gastric ...

BACKGROUND AND OBJECTIVE The objective of the study was to evaluate the efficiency of chemotherapy (CT) combined with high-dose extended-field radiotherapy (RT) in stage I extranodal nasal-type natural killer/T-cell lymphoma (NKTCL). PATIENTS AND METHODS Between January 2001 and November 2010, 103 stage I extranodal nasal-type NKTCL patients were retrospectively analyzed. Of these patients, 7...

BACKGROUND Rosai-Dorfman disease (RDD) is a rare benign idiopathic histiocytic proliferation. Most commonly reported cases are lymph nodal. Only 30-40% of cases occur in extranodal sites. Although the morphological features of RDD are well documented, there is limited information about the morphometric variations in the histiocytes of this entity. METHOD Twenty-two cases of RDD diagnosed on f...

Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy, is a rare disease of unknown etiology that typically presents as nodal disease in young children. However, it also can present in various extranodal sites and can be difficult to recognize if not considered in the differential diagnosis. Here, we report a case of appendix involvement by extranodal RDD, ...

PURPOSE To explore the relationship between morphological characteristics and histologic localization of metastasis within sentinel lymph nodes (SLN) and axillary spread in women with breast cancer. METHODS We selected 119 patients with positive SLN submitted to complete axillary lymph node dissection from July 2002 to March 2007. We retrieved the age of patients and the primary tumor size. I...