The Complaint the Nurse Should Consider as a Warning Sign

The complaint the nurse should consider as a warning sign for cancer would be:

A) Intense pain in an area such as a hip or groin after carrying several gallons of paint up a ladder and painting the garage.
B) Persistent indigestion associated with difficulty swallowing.
C) Diarrhea that lasts 2 days after an all-day picnic at the beach.
D) A painful lump under the umbilicus that recedes when pushed, but comes out again with a sneeze or hard cough.