I would ring up and say you have scared the bejeesers out of me.. Can you please explain what the spot might mean and where it was??
I am gonna agree with Aussienic here. I refuse to accept no information from doctors, nurses or anyone medical anymore.

I once went to a doctor about a persistent cold with painful cough that was really bringing me down. He did the usual examinations, wrote a prescription and sent me on my way. Off I go, walk into the pharmacy and suddenly it dawns on me - What is wrong with me????? He didn't say anything at all. O.o

So I ask the pharmacist instead what the prescription is used for treating to get some idea of what my problem is... "Stomach ulcers".

I dont fill the prescription, go to the hospital and am admitted with pneumonia.

Since that day, I have never left a surgery until they can properly explain everything, and if they give me a prescription, I ask the pharmacist if its the right one for my condition before I fill it.

Never ever let them get away with minimal information, and in things like ultrasounds and imaging, ask the sonographer lots of questions. Get as much information from him/her as possible. Then never be afraid to get a second, or third, or fourth opinion if people keep saying "its nothing". My Nan had a serious B12 deficiency, which was breaking down the neural pathways in her brain and she was acting more and more like an Alzheimer patient every day, and every doctor said "There is nothing wrong with her" until we got her to a doctor in the middle of a retirement village. This woman knew exactly what was wrong and treated her immediately.

Last but not least, don't feel ashamed to educate your doctor if you tell them about something and they stare at you blankly. Contrary to popular belief, not every doctor knows everything about every medical condition. Mine spent last night studying up on Anti-e and Vaso-Vagal Trypanophobia so that he can improve his level of care of me. When you find a doctor that good - stick to them!

Its your right to know, so ask.