Which of the following is not true about Beurger's disease

Ans) c (Cigerette cessation is....) Ref bailey 25th ed p 923-924Thrombo angitis obliterens/ Beurger's diseaseCharacterised by occlusive disease of the small and medium sized arteries (plantar, tibial, radial etc), thrombophlebitis of the superficial or deep veins and Raynaud's syndrome.Occurs in male smokers usually under the age of 30yrs.Often only one or two of the three manifestations are present.Histologically there are inflammatory changes in the walls of arteries and veins, leading to thrombosis.Treatment is total abstinence from smoking which arrests, but cloesn reverse, the disease.Established arterial occlusions are treated as for atheromatous disease, but amputations may eventually be required.Smoking cessation is not the definitive treatment.