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throughout the body) and other lymphoid tissues (such as the spleen, bone marrow, and. some other organs, including the skin). Lymphomas can start in any of these places. When a non-Hodgkin lymphoma starts only in the skin (not in other organs or tissues) it. is called a skin lymphoma (or cutaneous lymphoma). A lymphoma that starts in lymph. nodes or another part of the body and then spreads to the skin is not a skin lymphoma. (because it didnât start there).
Primary lymphatic organs. In humans the largest part of the lymphocyte development ccurs in specialized tissue of the primary lymphatic organs: bone marrow (liver in the fetal period) and thymus.There a large number of immunocompetent lymphocytes are produced that colonize the secondary lymphatic tissue.rimary lymphatic organs. In humans the largest part of the lymphocyte development ccurs in specialized tissue of the primary lymphatic organs: bone marrow (liver in the fetal period) and thymus.