Follicular lymphoma

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Follicular lymphoma (FL) is a cancer that involves certain types of white blood cells known as lymphocytes. This cancer is a form of Non-Hodgkin Lymphoma and it originates from the uncontrolled division of specific types of B-cells (centrocytes and centroblasts). These cells normally occupy the follicles (nodular swirls of various types of lymphocytes) in the germinal centers of lymphoid tissues such as lymph nodes. The cancerous cells in FL typically form follicular or follicle-like structures (see adjacent Figure) in the tissues they invade. These structures are usually the dominant histological feature of this cancer. In the US and Europe, this disease is the second most common form of non-Hodgkin's lymphomas, exceeded only by diffuse large B-cell lymphoma. FL accounts for 10–20% of non-Hodgkin's lymphomas, and ~15,000 new cases of follicular lymphoma are diagnosed each year in the US and Europe. Recent studies indicate that FL is similarly prevalent in Japan. FL is a broad and extremely...

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