Primary retroperitoneal malignant lymphoma is rare, and primary retroperitoneal indolent B-cell lymphoma has not been reported. A 64-year-old woman presented anuria. Imaging techniques showed large retroperitoneal mass, and biopsies from it revealed non-Hodgkin indolent B-cell lymphoma (small lymphocytic lymphoma/chronic lymphocytic lymphoma). The tumor appeared retroperitoneal primary and extr...

156 Iranian patients with primary malignant tumors of the small intestine were reviewed. Malignant lymphoma was the most common tumor type, comprising 128 patients (82%), followed by adenocarcinoma (22 patients, 14.1 %), leiomyosarcoma (4 patients, 2.56%) and carcinoid tumor (2 patients, 1.28%). Lymphomas and adenocarcinomas were primarily located in the duodenum or jejunum, whereas leiomy...

Primary central nervous system (CNS) lymphoma is a rare form of non-Hodgkin's lymphoma. The clinical presentation is variable, depending on its localisation within the nervous system. Only 1% of primary CNS lymphoma emerges in the spinal cord, and the prevalence of primary lymphoma of the cauda equina is unknown, but probably even rarer. Diagnosing primary lymphoma of the cauda equina is diffic...

Clinicopathologic information of gastrointestinal (GI) lymphoma in Southeast Asia is lacking. A retrospective analysis of 120 cases of GI lymphoma in Thailand diagnosed at Siriraj Hospital based on WHO classification was performed. All were non-Hodgkin lymphoma (NHL). The peak age was in the sixth and seventh decades; a slight male preponderance was observed. Sites of involvement included stoma...

b-cell lymphoblastic lymphoma (b-lbl) is an uncommon subtype of pediatric non-hodgkin lymphoma (nhl) which rarely involves the skin primarily. the positron emission tomography with 2-deoxy-2-[fluorine- 18] fluoro-d: -glucose integrated with computed tomography (18f-fdg pet/ct) scan findings of a 8-year-old boy with cutaneous b-lbl were presented. pet/ct scan demonstrated mild fdg uptake in the ...

Primary gastric lymphoma (PGL) is the most common type of extranodal that originates from lymphatic tissue within submucosa. In past two decades, treatment PGL has been overturned surgery to non-surgical individualized treatment, and its prognosis are different those other malignant lesions in stomach, so early diagnosis, accurate staging, timely monitoring outcome extremely important. Unlike i...

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Primary mediastinal large B-cell lymphoma is a subtype of diffuse large B-cell lymphoma, arising in the mediastinum from putative thymic B-cell origin with distinctive clinical and genetic features. Generally, primary mediastinal large B-cell lymphoma is believed as only deriving in the mediastinum. The current study presents a rare case of primary mediastinal large B-cell lymphoma which arisin...

Background: Cutaneous lymphomas are monoclonal neoplastic proliferations of immune cells most frequently T or B cells that infiltrates skin. Development of new diagnostic methods, particularly those for immunophenotyping, have substantially changed classification of these neoplasms. These reasons prompted us to perform this study. Objective: To re-classify cutaneous lymphomas and pseudoly...

It is a challenging task to diagnose mycosis fungoides (MF), a type of primary cutaneous lymphoma, in the early stages of its development, due to the unspecific presentations associated with the disease. Histopathology and immunohistochemistry conduce to a more definite diagnosis. Presence of atypical T-cells in epidermis and upper dermis is the most significant pathologic finding. Herein...