My background is in pathology. However, I have extensive experience in clinical medicine beginning as consulting physician in Hematology for 5 years at the University of California San Francisco where I was also attending physician in the lymphoma clinic. I had a laboratory in the Cancer Research Institute at UCSF and conducted NIH funded research on Hodgkin lymphoma. I established the first division of Hematopathology at the University of Washington with dual appointment at the Fred Hutchinson Cancer Center rising to the rank of full professor. After 7 years in Seattle, I established the first hematopathology laboratory at Beth Israel Deaconess Medical Center (BIDMC) in Boston. I was a member of the Clinical Research Center and became associate director of Cutaneous Oncology at BIDMC. During my tenure at BIDMC, I taught medical students in Hematology and Immunology at Harvard Medical School. I had sabbaticals in the Hematopathology Institute in Kiel, Germany with Karl Lennert, considered the Dean of Hematopathology in Europe, and in the Institute of Dermatology with Guenter Burg, Chair of Dermatology and Dean of the Medical School in Zurich, Switzerland. I spent an additional year with Thomas Kupper, chair of dermatology at Harvard. I then accepted a position as Professor of Dermatology at Boston University affiliated with Roger Williams Medical Center in Providence RI where I saw patients and conducted research on cutaneous lymphomas. Most recently, I was appointed as Professor of Pathology and Laboratory Medicine (Research) at the Warren Alpert School of Medicine at Brown University.