Dr Lawrence Weiss is a board-certified anatomic pathologist and the current chairman of pathology at the City of Hope National Medical Center in Duarte, California. He has published over 200 papers on varied topics in surgical pathology and hematopathology. He is also the editor of three books on hematologic malignancies and surgical pathology. In 2000, he was honored by the United States and Canadian Academy of Pathology as its Young Investigator of the Year.

• 1. Specimens and studies; 2. Normal lymph node; 3. Benign lymphadenopathies; 4. Stromal tumors and tumor-like lesions of the lymph nodes; 5. Non-Hodgkin lymphoma; 6. Composite lymphomas: the interface between classical Hodgkin and non-Hodgkin lymphoma; 7. Immunodeficiency-associated lymphoproliferative disorders; 8. Histiocytic and dendritic cell neoplasms; 9. Myeloid and mast cell neoplasms.

Dr Lawrence Weiss is a board-certified anatomic pathologist and the current chairman of pathology at the City of Hope National Medical Center in Duarte, California. He has published over 200 papers on varied topics in surgical pathology and hematopathology. He is also the editor of three books on hematologic malignancies and surgical pathology. In 2000, he was honored by the United States and Canadian Academy of Pathology as its Young Investigator of the Year.

• 1. Specimens and studies; 2. Normal lymph node; 3. Benign lymphadenopathies; 4. Stromal tumors and tumor-like lesions of the lymph nodes; 5. Non-Hodgkin lymphoma; 6. Composite lymphomas: the interface between classical Hodgkin and non-Hodgkin lymphoma; 7. Immunodeficiency-associated lymphoproliferative disorders; 8. Histiocytic and dendritic cell neoplasms; 9. Myeloid and mast cell neoplasms.

Dr Lawrence Weiss is a board-certified anatomic pathologist and the current chairman of pathology at the City of Hope National Medical Center in Duarte, California. He has published over 200 papers on varied topics in surgical pathology and hematopathology. He is also the editor of three books on hematologic malignancies and surgical pathology. In 2000, he was honored by the United States and Canadian Academy of Pathology as its Young Investigator of the Year.

• 1. Specimens and studies; 2. Normal lymph node; 3. Benign lymphadenopathies; 4. Stromal tumors and tumor-like lesions of the lymph nodes; 5. Non-Hodgkin lymphoma; 6. Composite lymphomas: the interface between classical Hodgkin and non-Hodgkin lymphoma; 7. Immunodeficiency-associated lymphoproliferative disorders; 8. Histiocytic and dendritic cell neoplasms; 9. Myeloid and mast cell neoplasms.