Eight years ago, Gary Fiscus, a music appreciation instructor at Iowa Western Community College in Sioux City, developed breast cancer in his right breast – a disease most commonly associated with women, KETV-7 reported Thursday.

When Fiscus noticed the small sore on his right breast growing larger, he said he couldn’t ignore it because of his family history of cancer.

Fiscus’ cancer has now spread to his left lung, left adrenal gland and there is a small spot on his spine.

“It’s kind of a shock, but you just keep going with your life,” said the 59-year-old, who is undergoing weekly chemotherapy treatments.

Compared to the 240,000 American women who develop breast cancer each year, just 2,000 men are diagnosed, said Dr. Cynara Coomer, a breast surgeon at Mount Sinai Medical Center in New York City.

And while 40,000 women will die of breast cancer this year, just 400 men will die of the disease, she added.

In 1993, actor Richard Roundtree promoted male breast cancer awareness when he announced his diagnosis. The 60-year-old actor underwent chemotherapy, radiation and a mastectomy.

Click here to see photos of more celebrities who have battled breast cancer.

Click here for more on Gary Fiscus’ battle at KETV-7.