Causes of sharp left quad upper abdominal pain. radiates to the back, but passes. location is about a handwidth above the belly button and to the left?

Stomach: The most likely source in the left upper abdomen is your stomach especially with the transient nature of the pain. Your colon is a possibility as well. If you are consistently having these symptoms talk to your physician about testing and treatments. Over the counter heartburn medications like omeprazole may be a good place to start with a trial of therapy. Good luck.