Published on Feb. 16, 2026
Colorectal surgery addresses damaged or diseased areas of the lower digestive tract, conditions caused by cancer, blockages, tears, functional disorders, or inflammatory disorders such as diverticulitis and inflammatory bowel disease. These conditions disrupt the normal flow of food and waste through the intestines, colon or rectum and, if untreated, can make patients seriously ill or impact one’s quality of life.
“Receiving a diagnosis related to colorectal health can feel overwhelming,” said Katherine Stern, M.D., M.S.,, colorectal surgeon MemorialCare Cancer Institute, Saddleback Medical Center. “My focus is always on easing those fears, so patients feel informed, supported and empowered throughout their care.”
Dr. Stern begins with an open and honest conversation that helps patients understand what is happening in their bodies. She listens closely to each person’s concerns and goals — often asking, “What is this like on a typical day for you?” and “What bothers you most about this?”
This patient-centered approach ensures that the treatment is guided not only by medical expertise but also by a deep respect for each individual’s journey. By creating this sense of partnership, she helps patients feel confident and engaged in every decision.
“In colorectal medicine, people may struggle to discuss sensitive topics, and this can feel isolating. By normalizing these conversations and reassuring patients that these problems are common, not rare or devastating, we can reduce stigma and help them feel heard.”
- Dr. Stern
This supportive approach continues even during emergencies.
“When someone has a surgical emergency such as a bowel injury or uncontrolled infection, decisions have to be made quickly; however, there is always enough time to talk with the patient, or their family, about options,” said Dr. Stern.
When it comes to treatment, patients at Saddleback Medical Center have access to a broad range of surgical techniques, including laparoscopic and transanal endoscopic, minimally invasive procedures, along with robotic-assisted surgery.
“One of the most advanced tools we use is the da Vinci 5 Surgical System,” Dr. Stern said. “The da Vinci 5 allows us to work with extraordinary precision. Its enhanced 3D visualization, advanced tremor-control features, and real-time feedback let us operate in a stable, natural environment without unnecessary manipulation of surrounding tissues. With its expanded computing power and refined instrument control, we can make extremely fine, targeted movements on the specific organ or area we’re treating. Altogether, it supports highly detailed, minimally invasive surgery that leads to fewer complications and smoother recoveries.”
Before and after surgery, Dr. Stern stays closely involved in each patient’s care, collaborating with a multidisciplinary team of gastroenterologists, medical oncologists, radiologists, pathologists, palliative care, and internists to ensure every decision is informed and coordinated. For Dr. Stern, this teamwork — and the shared decision-making it fosters — is one of the most meaningful parts of her role.
“I truly value the long-term relationships I build with my patients as they move through diagnosis, treatment, and recovery.”
- Dr. Stern
At MemorialCare Cancer Institute, this commitment to whole-person care is at the heart of every patient’s experience. With leading-edge surgical technology, evidence-based treatment options, and a multidisciplinary team dedicated to compassionate support, patients receive the highest level of colorectal care in a healing, patient-centered environment. Dr. Stern and her colleagues are here to ensure every patient feels, empowered and cared for — every step of the way.