Education: Sanitary and Hygienic Medical Institute (North-Western State Medical University named after I.I. Mechnikov), General Medicine; a researcher at the N.N. Petrov Research Institute of Oncology (1971 - 1991)

A.Y. Kolosov worked as a consultant to the director of the Medical University for science in Cuba (1985-1986), a pathologist at the Oncological Center of the St. Petersburg City Clinical Oncology Dispensary while simultaneously combining the work of a teacher at the Department of Pathological Anatomy of the St. Petersburg State Medical Academy named after I.I. Mechnikov

The deputy of the Jirov Regional Duma, contributed to organisation of one of the first hospices in Russia

Research interests: clinical and anatomical characteristics of tumors and prognosis for patients

Author of more than 300 publications, 30 monographs

A.E. Kolosov was twice awarded the badge "Excellent Health Worker" and the Diploma of the Minister of Healthcare for many years of impeccable work and scientific achievements,
By decree of the President of the Russian Federation, he was awarded the title of "Honoured Worker of the Higher Institutions of the Russian Federation".