文档介绍：The Lymphohematopoietic Systems Chapter 9 Zhou Hongyan Lymphohematopoietic system: myeloid tissue lymphoid tissue nomal lymph node follicular LYMPHOID NEOPLASMS Arise in bone marrow and circulate in the peripheral blood . Appear as tumor masses within either lymph nodes or ans. relevant principles: lymphoid neoplasms(80%- 85%) are of B-cell origin. 2. The normal architecture of the lymph nodes is effaced. 3. Disrupt normal immune regulatory mechanism. neoplasms. ---widely disseminated at the time of diagnosis. HL—spreads methodically to contiguous lymph node groups. relevant principles: Classification:(REAL and WHO) three major categories: (1)tumors of B cells (2)tumors of T cells and NK cells (3)Hodgkin lymphoma LYMPHOID NEOPLASMS: Hodgkin lymphoma --------- (HL) non - Hodgkin lymphoma --------- (NHL) Hodgkin lymphoma HL: