Pulsatile varicose veins in lower limbs is seen in –
Klippel trenaunay syndrome
TR
RV failure
Carcinoid stenosis of tricuspid
Klippel - Trenaunay syndrome (KT syndrome) 

The triad of KT syndrome is:-


Cutaneous vascular malformation —> Most commonly capillary malformation.
Bony capillary malformation and soft tissue hypertrophy.
Venous abnormalities —> Deep venous system may be absent or hypoplastic.


The anomaly present at birth and usually involves lower limb.
When there is associated Arterio - venous malformation, it is known as Klippel - Trenaunay - Weber syndrome.
Thick walled venous varicocities typically become apparent ipsilateral to the vascular malformation —> May be pulsatile because ofAV malformation.