<prompt> Contraindication for surgery in varicose veins -DVTMultiple incompetent perforatorsUlcer at ankleNone  <response>: Ans. is a i.e., DVT o Deep vein thrombosis is a contraindication for tt of varicose veins.o Varicose vein surgery should never be attempted in a case where deep vein thrombosis exists along with varicose veins, because in these cases superficial veins are the only valved venous pathway and excising them will only aggravate the condition. 