which sign is seen on USG when the femoral vein meets the GSV and femoral aery at saphena femoral junction

Radiology

which sign is seen on USG when the femoral vein meets the GSV and femoral aery at saphena femoral junction

All of the following form radiolucent stones except:

The usual radiographic appearance of an osteosarcoma is:

A middle aged female presents with slowly progressive weakness of lower limbs,…