When abdominal pain or digestive changes disrupt daily life, it can be hard to know when to seek specialized care. Dr. Teena Nerwal, a colorectal surgeon at St. Elizabeth Healthcare, works closely with patients experiencing conditions like diverticulitis — a common colon issue she treats. Her patient-centered approach focuses on education, empowerment and helping people find relief and regain quality of life.

In this Q&A, Dr. Nerwal explains what these conditions are, how they’re treated and when elective surgery may be the best option.

What exactly are diverticulosis and diverticulitis?

Diverticulosis refers to small pouches or pockets that develop in the lining of the colon. Many people have diverticulosis and don’t know it because it often causes no symptoms.

Diverticulitis occurs when these pouches become inflamed or infected. “Diverticulitis is one of the most common conditions I see,” Dr. Nerwal says. “It can cause significant abdominal pain, fever and digestive upset, and in more severe cases can lead to complications.”

When should a person consider seeing a colorectal surgeon for these conditions?

Dr. Nerwal encourages patients to reach out earlier rather than later — even if they’re unsure whether surgery is necessary.

“There’s no harm in talking,” she says. “Seeing a surgeon doesn’t mean you’re signing up for an operation. It means you’re getting information about your condition and your options.”

She explains that many people come to her after years of recurring symptoms. “By the time they get to me, they often say they wish they had been referred sooner.”

When is elective surgery recommended for diverticulitis?

Elective surgery may be considered when:

  • A patient experiences repeated or severe flare-ups
  • Imaging shows significant inflammation or damage
  • A complication is likely or has already occurred
  • Large polyps or other issues cannot be treated through colonoscopy

“For diverticulitis, if a patient has had severe inflammation or repeated episodes, surgery can prevent future problems,” Dr. Nerwal explains. “The goal is always to help them feel better and avoid an emergency situation.”

What is the difference between elective surgery and emergency surgery in these cases?

Elective surgery is planned, allowing time to prepare and optimize a patient’s health — improving results and recovery.

Emergency surgery, on the other hand, happens when a complication arises suddenly, such as a perforation or abscess.

“Our goal is always to catch things early so surgery, if needed, is done safely, comfortably and on the patient’s terms,” Dr. Nerwal says.

What are some of the advanced technologies available for colorectal surgery?

St. Elizabeth offers da Vinci robotic surgical systems in all locations where Dr. Nerwal operates.

“The robot helps me perform surgery with smaller incisions, less pain and faster recovery,” she says. “Patients usually leave the hospital one to two days sooner compared to traditional surgery.”

She notes that robotics also improves precision and comfort for surgeons — which ultimately benefits patients.

How do you work with other specialists to support patients with diverticular disease?

Depending on a patient’s symptoms or complications, she collaborates closely with:

  • Gastroenterologists
  • Urologists
  • Oncologists and radiation specialists (when cancer is involved)

“Colorectal care is truly team-based,” she says. “We work together to treat the whole patient, not just one part of their condition.”

What would you say to someone who is hesitant to talk to a colorectal surgeon?

“Just come in,” Dr. Nerwal says warmly. “Most of the time, I’m educating patients and helping them understand what’s going on. Surgery is only one option — and it’s always the patient’s decision.”

She emphasizes that no one should suffer in silence. “If something feels off, painful or persistent, we can help.”

Are you experiencing symptoms like abdominal pain, bowel changes or recurring diverticulitis?

Take our quick Colorectal Health Screening Quiz to learn whether a consultation with a colorectal surgeon like Dr. Nerwal may be right for you.

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