|
Lymphogranuloma Venereum
|
D008219 |
[Subacute inflammation of the inguinal lymph glands caused by certain immunotypes of CHLAMYDIA TRACHOMATIS. It is a sexually transmitted disease in the U.S. but is more widespread in developing countries. It is distinguished from granuloma venereum (see GRANULOMA INGUINALE), which is caused by Calymmatobacterium granulomatis.
] |
|
Lymphography
|
D008220 |
[Radiographic study of the lymphatic system following injection of dye or contrast medium.
] |
|
Lymphohistiocytosis, Hemophagocytic
|
D051359 |
[Rare form of hemophagocytic lymphohistiocytosis with multiorgan involvement seen in infants and young children
, A group of related disorders characterized by LYMPHOCYTOSIS; HISTIOCYTOSIS; and hemophagocytosis. The two major forms are familial and reactive.
, Proliferation of HISTIOCYTES in response to viral, bacterial, fungal, or parasitic infections.
] |
|
Lymphoid Enhancer-Binding Factor 1
|
D051821 |
[A T-cell factor that plays an essential role in EMBRYONIC DEVELOPMENT.
] |
|
Lymphoid Progenitor Cells
|
D054503 |
[Stem cells from which B-LYMPHOCYTES; T-LYMPHOCYTES; NATURAL KILLER CELLS; and some DENDRITIC CELLS derive.
] |
|
Lymphoid Tissue
|
D008221 |
[Specialized tissues that are components of the lymphatic system. They provide fixed locations within the body where a variety of LYMPHOCYTES can form, mature and multiply. The lymphoid tissues are connected by a network of LYMPHATIC VESSELS.
] |
|
Lymphokines
|
D008222 |
[Soluble protein factors generated by activated lymphocytes that affect other cells, primarily those involved in cellular immunity.
] |
|
Lymphoma
|
D008223 |
[A general term for various neoplastic diseases of the lymphoid tissue.
] |
|
Lymphoma, AIDS-Related
|
D016483 |
[B-cell lymphoid tumors that occur in association with AIDS. Patients often present with an advanced stage of disease and highly malignant subtypes including BURKITT LYMPHOMA; IMMUNOBLASTIC LARGE-CELL LYMPHOMA; PRIMARY EFFUSION LYMPHOMA; and DIFFUSE, LARGE B-CELL, LYMPHOMA. The tumors are often disseminated in unusual extranodal sites and chromosomal abnormalities are frequently present. It is likely that polyclonal B-cell lymphoproliferation in AIDS is a complex result of EBV infection, HIV antigenic stimulation, and T-cell-dependent HIV activation.
] |
|
Lymphoma, B-Cell
|
D016393 |
[A group of heterogeneous lymphoid tumors generally expressing one or more B-cell antigens or representing malignant transformations of B-lymphocytes.
] |
|
Lymphoma, B-Cell, Marginal Zone
|
D018442 |
[Extranodal lymphoma of lymphoid tissue associated with mucosa that is in contact with exogenous antigens. Many of the sites of these lymphomas, such as the stomach, salivary gland, and thyroid, are normally devoid of lymphoid tissue. They acquire mucosa-associated lymphoid tissue (MALT) type as a result of an immunologically mediated disorder.
] |
|
Lymphoma, Extranodal NK-T-Cell
|
D054391 |
[An extranodal neoplasm, usually possessing an NK-cell phenotype and associated with EPSTEIN-BARR VIRUS. These lymphomas exhibit a broad morphologic spectrum, frequent necrosis, angioinvasion, and most commonly present in the midfacial region, but also in other extranodal sites.
] |
|
Lymphoma, Follicular
|
D008224 |
[A low-grade malignant lymphoma of follicular pattern in which there is no clear preponderance of one cell type (small or large) over another. The large cells, cleaved or noncleaved, are often 2-3 times larger in diameter than normal lymphocytes.
, Malignant lymphoma in which the lymphomatous cells are clustered into identifiable nodules within the LYMPH NODES. The nodules resemble to some extent the GERMINAL CENTER of lymph node follicles and most likely represent neoplastic proliferation of lymph node-derived follicular center B-LYMPHOCYTES.
, A low-grade malignant lymphoma of predominantly follicular pattern. Follicles are of relatively uniform size and shape and the cells are usually somewhat larger than normal lymphocytes. Nuclei are irregular with prominent indentations and cytoplasm can rarely be identified. Cells exhibiting these characteristics are often called centrocytes.
, Malignant lymphoma in which the majority of neoplastic cells within the follicles are large cleaved or noncleaved cells. The degree to which the follicular center cells retain their ability to form follicles varies with the state of B-cell transformation.
] |
|
Lymphoma, Large B-Cell, Diffuse
|
D016403 |
[Malignant lymphoma composed of large B lymphoid cells whose nuclear size can exceed normal macrophage nuclei, or more than twice the size of a normal lymphocyte. The pattern is predominantly diffuse. Most of these lymphomas represent the malignant counterpart of B-lymphocytes at midstage in the process of differentiation.
] |
|
Lymphoma, Large-Cell, Anaplastic
|
D017728 |
[A systemic, large-cell, non-Hodgkin, malignant lymphoma characterized by cells with pleomorphic appearance and expressing the CD30 ANTIGEN. These so-called "hallmark" cells have lobulated and indented nuclei. This lymphoma is often mistaken for metastatic carcinoma and MALIGNANT HISTIOCYTOSIS.
] |
|
Lymphoma, Large-Cell, Immunoblastic
|
D016400 |
[Malignant lymphoma characterized by the presence of immunoblasts with uniformly round-to-oval nuclei, one or more prominent nucleoli, and abundant cytoplasm. This class may be subdivided into plasmacytoid and clear-cell types based on cytoplasmic characteristics. A third category, pleomorphous, may be analogous to some of the peripheral T-cell lymphomas (LYMPHOMA, T-CELL, PERIPHERAL) recorded in both the United States and Japan.
] |
|
Lymphoma, Mantle-Cell
|
D020522 |
[A form of non-Hodgkin lymphoma having a usually diffuse pattern with both small and medium lymphocytes and small cleaved cells. It accounts for about 5% of adult non-Hodgkin lymphomas in the United States and Europe. The majority of mantle-cell lymphomas are associated with a t(11;14) translocation resulting in overexpression of the CYCLIN D1 gene (GENES, BCL-1).
] |
|
Lymphoma, Non-Hodgkin
|
D008228 |
[Any of a group of malignant tumors of lymphoid tissue that differ from HODGKIN DISEASE, being more heterogeneous with respect to malignant cell lineage, clinical course, prognosis, and therapy. The only common feature among these tumors is the absence of giant REED-STERNBERG CELLS, a characteristic of Hodgkin's disease.
] |
|
Lymphoma, Primary Cutaneous Anaplastic Large Cell
|
D054446 |
[Anaplastic lymphoma of the skin which develops as a primary neoplasm expressing the CD30 ANTIGEN. It is characterized by solitary nodules or ulcerated tumors.
] |
|
Lymphoma, Primary Effusion
|
D054685 |
[A rare neoplasm of large B-cells usually presenting as serious effusions without detectable tumor masses. The most common sites of involvement are the pleural, pericardial, and peritoneal cavities. It is associated with HUMAN HERPESVIRUS 8, most often occurring in the setting of immunodeficiency.
] |
