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follicular lymphoma
Follicular lymphoma is a type of blood cancer. It is the most common of the indolent (slow-growing) non-Hodgkin's lymphomas, and the second-most-common form of non-Hodgkin's lymphomas overall. It is defined as a lymphoma of follicle center B-cells (centrocytes and centroblasts), which has at least a partially follicular pattern. It is positive for the B-cell markers CD10, CD19, CD22, and usually CD20,〔(Overview ) at UMDNJ〕 but almost always negative for CD5.
There are several synonymous and obsolete terms for this disease, such as CB/CC lymphoma (Centroblastic and Centrocytic lymphoma), nodular lymphoma and Brill-Symmers Disease.
==Morphology==
The tumor is composed of follicles containing a mixture of centrocytes (Kiel nomenclature adopted by WHO experts) or cleaved follicle center cells (older American nomenclature), "small cells", and centroblasts (Kiel nomenclature adopted by WHO experts) or large noncleaved follicle center cells (older American nomenclature), "large cells". These follicles are surrounded by non-malignant cells, mostly T-cells. In the follicles, centrocytes typically predominate; centroblasts are usually in minority.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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