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Lymphoma Specialists

Leonard Prosnitz, MD

Chairman and Professor Emeritus
Duke Department of Radiation Oncology  

The contributions of Dr. Prosnitz to the field of radiation oncology and to Duke itself are far reaching and transformative. He was a pioneer in demonstrating the effectiveness of lumpectomy and radiation rather than mastectomy in early stage breast cancer treatment, a process now considered standard and offered to more than 100,000 women each year in the U.S. He also pioneered combination therapies of radiation and chemotherapy for malignant lymphomas and other cancers.  On the humanitarian front, Dr. Prosnitz helped to develop a modern cancer center and radiation therapy facility in Taiwan and was a leader in the creation of Caring House in Durham—a home that provides adult cancer patients and accompanying caregivers with a comfortable, supportive, and affordable place to stay during outpatient treatment at the Duke Comprehensive Cancer Center.

Andrea K. Ng, MD, MPH

Professor, Department of Radiation Oncology, Harvard Medical School
Attending Physician, Radiation Oncology, Brigham And Women’s Hospital


The area of my clinical research is on treatment outcome of patients diagnosed with Hodgkin’s lymphoma and non-Hodgkin’s lymphoma. I especially focus on treatment side effects and late effects of cancer therapy, including second malignancies, cardiopulmonary complications and quality of life of long-term survivors of lymphoma.

Her recent publications include the following topics: 

  • ILROG guidelines on the use of radiotherapy for HL, relapsed lymphoma, NK/T cell lymphoma, nasal type, multiple myeloma,  and on alternative radiation fractionation strategies for hematologic malignancies during COVID pandemics
  • Low-dose radiation therapy for indolent lymphoma
  • Radiotherapy in the management of classical HL, nodular lymphocyte predominant lymphoma, cutaneous lymphoma, relapse/refractory NHL, 
  • Late effects of radiotherapy for Hodgkin lymphoma including second malignancy and cardiovascular disease risks
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