These are normal inguinal lymph nodes,
nodes in the axilla and groin can be very large and elongated in normal individuals.
Measure the node in the short axis rather than the long axis and look at the node morphology.
If it is long and has a normal fatty hilum without a thickened cortex I am happy it is normal.
If it malignant it will become rounded rather than elongated and will loose the normal fatty hilum architecture.
Steve.