Yes, it is possible for a groin (inguinal) hernia to occur in the upper thigh. Most commonly, this is caused by a femoral hernia (and which is much more common in men than in women). Another possibility is that of an enlarged lymph node.
You should ask your doctor to examine you, and if a hernia is present, then your doctor can refer you to a surgeon,
Sincerely/ Robert A. Wascher, MD, FACS
www.doctorwascher.com
www.oncoguard.com