<prompt> Leiomyosarcoma most common age group is -20 - 40 years30 - 50 years40 - 60 years50 - 70 years  <response>: 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. 