Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UNIPROT:Q06643 (non-Hodgkin's lymphoma)
 11,307 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Monocytes and macrophages are closely related in origin, structure and function. True histiocytic lymphoma is a neoplasm of phagocytic histiocytes and is treated as non-Hodgkin's lymphoma. Tissue involvement with myeloid leukemia, including monocytic leukemia, is called extramedullary myeloid cell tumor or granulocytic sarcoma and treated with antileukemic chemotherapy. Differentiating true histiocytic lymphoma from tissue involvement with monocytic leukemia is a rather impossible task using available morphologic, cytochemical, immunocytochemical and molecular methods. The two entities need to be unified probably more appropriately as extramedullary myeloid cell tumor of monocytic origin, and should therefore be treated as such.
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PMID:True histiocytic lymphoma: is it an entity? 918 Mar 4

True histiocytic lymphoma (THL) is a very rare type of non-Hodgkin's lymphoma (NHL) in which neoplastic cells exhibit markers of histiocytic differentiation. Some cases of THL have been reported in patients with previous acute lymphoblastic leukaemia (ALL), especially in children and young adults, in whom the acute leukaemia was of T-cell origin. The relationship between the initial lymphoid tumour and the secondary THL remains unclear, as a common monoclonal origin shared by both neoplasms has never been definitively demonstrated. We report a patient with B-ALL who developed a nodal and extranodal tumour with histological and immunohistochemical features of THL 4 years after the initial diagnosis. Genotypic study showed that both neoplasms contained the same immunoglobulin heavy gene rearrangement, which has not been reported previously.
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PMID:True histiocytic lymphoma following B-acute lymphoblastic leukaemia: case report with evidence for a common clonal origin in both neoplasms. 1144 1

Histiocytic sarcoma, proliferation arising from immunoregulatory effector system cells, is a very rare and recently recognized tumor. Diagnosis is based on immunohistochemical and molecular genetic study, which allows to distinguish histiocytic sarcoma from lymphocytic proliferation, such as non-Hodgkin's lymphoma. We report the case of a gastric interdigitating reticulum cell sarcoma, treated by resection and chemotherapy. We review here clinical, histological, immunohistochemical and genotypic features of histiocytic tumors of the digestive tract.
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PMID:[Gastric interdigitating reticulum cell sarcoma: unusual presentation of a histiocytic tumor]. 1212 68

Histiocytic sarcoma is a rare malignancy of hematopoietic origin. Lymph nodes, skin, and extranodal sites, especially gastrointestinal tract, are commonly involved. Some cases reported in the past as non-Hodgkin's lymphoma are now classified as histiocytic sarcoma by detailed immunohistochemical studies. Patients with clinically localized disease have a good prognosis whereas those with lymphatic involvement have an aggressive course. In our case, histiocytic sarcoma was detected, originating from the skin over the left shoulder associated with disseminated lymphadenopathy. A positron emission tomography/computed tomography examination was done for evaluating the extent of the disease which showed pathologic increased 18F-fluorodeoxyglucose uptake in the lymph nodes, indicating widespread disease. The pertinent literature is reviewed.
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PMID:Histiocytic sarcoma: PET-CT evaluation of a rare entity. 1898 75