<prompt> True about primary lymphedema:Prevalence is 2Onset bw 2-35 years indicates lymphedema tardaOnset 35 yrs indicates praecox typeAssociated with Milroys disease  <response>: Ans is d i.e. Associated with Milroys disease The primary lymphedemas are relatively uncommon, occurring in 1 of every 10,000 individuals-Sabiston Lymphangiosarcoma is a rare tumor that develops as a complication of long-standing usually more than 10 years lymphedema.- Sabiston Cutaneous lymphangiosarcoma may develop in chronically lymphedematous extremities.- Devita 8e Chapter 45 