An imbalance between estrogen and progesterone in breast tissue during the menstrual cycle can lead to breast cysts and breast pain. Most of these conditions are benign and can be treated medically in many cases.

You may need to be tested to see if your thyroid nodule is cancerous. The nodule may be something you find yourself, or it may be something your doctor finds during a physical exam or other tests.

The nasopharynx is the area behind the nose and above the throat. This is a difficult area to check, with early symptoms that are easy to confuse, making nasopharyngeal cancer less likely to be detected early. So what tests are needed to detect early stage nasopharyngeal cancer?