Have you ever heard the term “Ear, Nose and Throat Doctor?” It is a common enough specialty, and the reason for its existence is purely physiological - mainly because all those parts of the body are connected.
Very often when a person has a cold or the flu, they will find their entire head in the midst of the ailment. Sinus pressure, ear pain, runny nose, and cough are just a few of the common symptoms associated with cold and flu, so it begs to reason that the presence of cancer might cause some similar symptoms.
Ear pain often manifests in cancer patients due to the additional pressures put on the surrounding areas by the presence of cancer cells. The result is a dull, constant pain in the ear which is very similar to your typical earache, except, a lot more serious.