Varian Medical Systems announced it has entered into a definitive agreement to acquire India’s Cancer Treatment Services International (CTSI) for $283 million. Privately held, CTSI operates the American Oncology Institute in Hyderabad and 10 multidisciplinary — radiation, medical and surgical oncology — cancer centers across the Indian subcontinent, as well as a U.S.-based Oncology Solutions division that provides cancer care professional services to healthcare providers worldwide.