Woman and Dog Both Diagnosed With Breast Cancer

A woman from Ascot, Berkshire, and her dog have both overcome breast cancer, highlighting a rare parallel in medical diagnoses between a pet and its owner.

Vickie Doogan, 52, first faced the disease at age 39 after discovering a lump in her left arm. Although she was fit and healthy at the time, she underwent chemotherapy and responded well to the treatment.

In 2018, at age 44, Doogan received a second breast cancer diagnosis. During this period, she discovered she carries the altered BRCA2 gene, a genetic mutation that increases a person’s predisposition to breast cancer.

To reduce the risk of a third occurrence, Doogan underwent an elective double mastectomy and received implants the following day.

Following her second diagnosis, Doogan adopted a poochon named Dolly to provide support and companionship during her recovery process.

Parallel Diagnosis and Treatment

Seven years after the dog joined the household, the roles of caregiver and patient reversed. In February 2026, Doogan took Dolly to the veterinarian due to stomach pain.

The veterinary examination revealed that Dolly had also been diagnosed with breast cancer. Like her owner, the dog required a mastectomy to treat the disease.

Both Doogan and Dolly recovered from their respective surgeries and are currently cancer-free.

The Role of Genetic Predisposition

Doogan’s medical history is marked by a hereditary component. The BRCA2 gene is a tumor suppressor gene; when We see altered or mutated, it can significantly increase the lifetime risk of developing breast and ovarian cancers in humans.

For individuals with this genetic marker, prophylactic measures such as elective double mastectomies are sometimes pursued to lower the probability of cancer returning or developing in remaining tissue.

Doogan described her initial reaction to her first diagnosis as being absolutely floored and noted that the chemotherapy process was brutal.

I found out I have the altered BRCA2 gene, meaning I’m more predisposed to breast cancer, so I had an elective double mastectomy.

Vickie Doogan

The case underscores the importance of monitoring health markers in both humans and pets, as breast cancer can occur in canine populations as well.

Doogan, who works as a recruiter, has shared her story to demonstrate that individuals can continue to live full lives despite receiving a cancer diagnosis.