Lymphatic system diseases pdf

The enlarged lymph nodes are usually painless. The sweats are most common at night. There are dozens of subtypes of lymphomas. Lymphatic system diseas

The enlarged lymph nodes are usually painless. The sweats are most common at night. There are dozens of subtypes of lymphomas. Lymphatic system diseases pdf most often spreads to the lungs, liver, and brain.

The outcome depends on the subtype with some being curable and treatment prolonging survival in most. Worldwide, lymphomas developed in 566,000 people in 2012 and caused 305,000 deaths. In children, they are the third-most common cancer. Hodgkin lymphoma and non-Hodgkin lymphoma. After lymphoma is diagnosed, a variety of tests may be carried out to look for specific features characteristic of different types of lymphoma. Several classification systems have existed for lymphoma, which use histological and other findings to divide lymphoma into different categories. The classification of a lymphoma can affect treatment and prognosis.

A division into Hodgkin and non-Hodgkin lymphomas is used in several of the older classification systems. Hodgkin lymphoma, are more common than Hodgkin lymphoma. A wide variety of lymphomas are in this class, and the causes, the types of cells involved, and the prognosis vary by type. The incidence of non-Hodgkin lymphoma increases with age. It is further divided into several subtypes. The five groups are shown in the table. Hodgkin lymphoma is considered separately within the WHO and preceding classifications, although it is recognized as being a tumor of, albeit markedly abnormal, lymphocytes of mature B cell lineage.

However, most of the aggressive lymphomas respond well to treatment and are curable. B cells to epithelium creates lymphoepithelial lesions. AIDS, but it can occur in the immunocompetent, as well. It has a poor prognosis, particularly in those with AIDS. It was widely accepted at the time of its publication, but is now obsolete.