Advanced breast cancer technology helps surgeons locate and remove tumors with precision, close to home

MARQUETTE, Mich. (Dec. 3, 2025) — UP Health System – Marquette (UPHS – Marquette) has introduced the Magseed® marker, an innovative technology that helps surgeons accurately locate and remove breast tumors while improving patient comfort. The new device offers a more accurate and less invasive alternative to traditional guidewire localization, enhancing outcomes and the overall patient experience.

Breast-conserving surgery — also known as a lumpectomy or partial mastectomy — is a common treatment option for patients diagnosed with early-stage breast cancer or those with a suspicious lump identified through routine screening. This approach removes the tumor while preserving as much healthy breast tissue as possible, often resulting in better cosmetic outcomes than a full mastectomy. As regular screenings catch breast cancers earlier, more patients are becoming candidates for breast-conserving surgery, improving survivorship and long-term outcomes. 

How Magseed® Works

Surgeons use tools to mark tumors ahead of surgery. Magseed is a tiny metallic seed, just 1 mm by 5 mm—smaller than a grain of rice—that can be placed directly into the tumor days, weeks, or even months before the procedure. Once in place, it cannot be dislodged or damaged.

During surgery, a probe detects the magnetic signal emitted by the seed, guiding the surgeon to the exact location of the tumor and aiding in its complete removal. This method replaces traditional wire localization, which could shift before surgery and often causes discomfort or added stress for patients. 

“In the realm of cancer marking, our surgeons and patients have unanimously found the Magseed marker to be safer, more comfortable, highly effective and time-efficient compared with traditional guidewires,” said Heidi Henry, MD, a radiologist at UPHS – Marquette. “We can now implant the marker well in advance of surgery, eliminating the need for additional procedures on the day of the operation.” 

Magseed® can also be used in lymph node procedures for more advanced cancers, giving clinicians greater flexibility in surgical planning.

Patient-Centered Innovation

“We take pride in delivering innovative and compassionate care to our community,” said Tonya Darner, Market CEO of UPHS–Marquette. “The introduction of Magseed technology aligns with our mission of making communities healthier. Patients now have access to the latest surgical techniques close to home and can feel confident in the quality of care they receive.”

Patients report improved comfort and convenience, including shorter wait times on surgery day and fewer pre-operative steps. Physicians also note improved accuracy and ease of use compared with traditional methods. 

Breast Cancer in the United States

According to the Centers for Disease Control and Prevention, breast cancer is the most common cancer among women in the U.S., with about 1 in 8 women diagnosed in their lifetime. Early detection through regular screening — especially for those with family history or other risk factors — significantly increases treatment effectiveness.

Comprehensive Breast Health Services

UPHS – Marquette provides a full range of advanced imaging and diagnostic services for breast health, including:

• 3D mammography
• Breast ultrasound
• Ultrasound-guided biopsy
• Stereotactic breast biopsy
• Breast MRI and MRI-guided biopsy
• Lymphoscintigraphy

The multidisciplinary care team includes mammographers, medical and radiation oncologists, surgeons, radiologists, plastic and reconstructive surgeons, pathologists, genetic counselors, health psychologists, physical therapists, clinical trials nurses, breast imaging nurses and a patient navigator.

Learn more at UPHealthSystem.com/breast-health.