Pathology Characteristics and Epidemiology of Neoplasia a2814a42 Leiomyosarcoma most common age group is - A 20 - 40 years B 30 - 50 years C 40 - 60 years D 50 - 70 years High-Yield Explanation Ans. is 'c' i.e., 40 - 60 years o Leiomyosarcomas occur both before and after menopause, with a peak incidence at 40 to 60 years of age.