He worked as a Medical Officer at the Lagos University Teaching Hospital (LUTH) from where he proceeded to the Christie Hospital and Radium Holt Institute, University of Manchester, England between 1975 and 1979 for his Postgraduate training and qualifications in Radiation Therapy and Oncology . (Specialist in Cancer Treatment)
He had additional working experience as Registrar and Senior Registrar at other major Cancer Specialist Hospitals in the UK such as the Cookridge Hospital Leeds and Clatterbridge Hospital, Liverpool, England before returning home in 1980 where he was soon appointed a Lecturer Grade One at the College of Medicine University of Lagos and Consultant in Radiation therapy and Oncology (Cancer Specialist) to LUTH.
Professor Durosinmi-Etti was appointed in 1988 by the United Nations, International Atomic Energy Agency (IAEA) in Vienna, Austria as a Radiotherapy (Cancer) Specialist charged with the overall worldwide activities of the IAEA in the field of Radiotherapy. His activities included training, research and clinical treatment of cancer patients. He held this position between 1988 and 1995 during which period he was largely instrumental to the development of the specialty in 45 developing countries of the world spanning Africa, Asia, Pacific, Eastern Europe and Latin America among several others.
Major Radiotherapy hospitals in some of the following countries still bear his influence especially in the areas of training and development of modern radiotherapy practices and facilities for the treatment of cancer: Nigeria, Ghana, Morocco, Zimbabwe, Namibia, Cameroon, Egypt, Tanzania, Uganda. Others include Bolivia, Nicaragua, Panama, Peru, Pakistan, India, Poland, France, UK, etc.
He has several Academic publications to his credit in peer reviewed local and International journals. He was also involved in the design and development of the AMRA brachytherapy machine in France and the CERVIFIX machine in Italy. These machines are used worldwide, including LUTH, ABUTH and National Hospital Abuja, for the treatment of cancer of the cervix in women.
Professor Durosinmi-Etti is certainly one of the best known Cancer experts of African origin in the world today. He had served as the only black African on the Board of ICEDOC (an International cancer organisation), was a pillar behind the formation of the African Radiation Oncology Group (AFROG) which today receives support from the IAEA and WHO for the overall interest and benefit of Radiation Oncologists all over Africa. He is still being sought after by the International Community such as the MD Anderson Hospital, USA for whom he was Chairman of the organising committee for their yearly training programme in Oncology in different countries in Africa which started with a roundtable conference in Abuja in October 2006..
He has served Nigeria at various other levels including his position as the Pioneer Chief Medical Director and Chief Executive Officer of the prestigious National Hospital, Abuja.
He was appointed in 2003 as Secretary to the Federal Character Commission, under the Presidency in Abuja, a position which he voluntarily relinquished on 14 October 2011 to continue as full time Professor at the University of Lagos till date..
He serves currently as the Chairman of the Board of Federal Medical Centre, Ebute-Metta, Lagos under whom the hospital has attained magnificent heights .
Professor Durosinmi-Etti has extensive administrative experience at International and local levels and well versed with the Public Service Rules and Procedures.
He is a Fellow and Member of several local and International Professional Associations. He has also received several local and International awards including the highly prestigious Officer of the Order of the Federal Republic. (OFR)