Answer: of course it’s a left inguinal hernia containing colon

If the doc doesn’t want to stick their stethoscope down there, often an Ultrasound can be much more revealing than a plain film. CT/MRI if you must. I doubt anyone would want to do or see a herniogram (if you don’t know what I’m talking about, the old school way to confirm an inguinal hernia was to inject contrast into the abdomen. Check out pics: http://www.eurorad.org/eurorad/case.php?id=2216)

quick reference on hernias: http://radiopaedia.org/articles/inguinal-hernia

long reference: http://pubs.rsna.org/doi/abs/10.1148/rg.312105129