A Radiation Oncologist from the Cancer Institute (WIA), she completed her MBBS from the Government Stanley Medical College in 1985 and then completed a DMRT (diploma in medical radiotherapy) and MD (radiation therapy) from the Tamil Nadu Dr.MGR Medical University in 1992 and 1995 respectively.
Dr. Selvaluxmy joined the Cancer Institute as a medical officer in 1987 and worked with Dr. V. Shanta, doyen of cancer care and former Director of the Institute. She was trained in early diagnosis, clinical examination, treatment protocols, management and the prevention of breast and gynecological malignancies. She underwent training in Brachytherapy in gynecological malignancies at Christie Hospital and Holt Radium Institute.
Dr. Selvaluxmy rose to the position of the Director of Cancer Institute from the position of Assistant Professor, over a span of 23 years of service at the Insti-tute. She was awarded 'The Best Doctor Award' in 2012 by the T.N. Dr MGR Medical University. She was a member of several scientific associations, and was the founder member of the Indian Brachytherapy Society, she had also served as President of Association of Radiation Oncologists of India, Tamil Nadu & Puducherry Chapter.
She was fondly called Dr. GSL by all. A colleague said, "Dr. Selvaluxmy was known for her patient dedication and her bold persona." She was deeply loved and respected by her patients, friends and the extended Cancer Institute Family.