Breast Mass Revealing Hidden Lung Cancer.

Lung cancer is the second most common cancer and the leading cause of cancer-related deaths in the United States, frequently metastasizing to the brain, bones, liver, and adrenal glands. However, it is uncommon for lung malignancies to metastasize to the breast, and is generally assumed to carry a poor prognosis.  We present the case of a 62-year-old female who presented for an annual physical exam and complained of persistent neck pain without neurological deficit.