HIPEC Surgery: What Australians Need to Know About This Intensive Treatment

HIPEC surgery, short for Hyperthermic Intraperitoneal Chemotherapy is one of the most aggressive treatment options available for certain advanced cases of bowel cancer. It’s not part of the standard playbook for early treatment. But if your cancer has spread into your abdominal cavity, and you’re otherwise in good health, HIPEC might be raised as a potential option. And when it is, the decision is huge.

So let’s break it down. This blog explains what HIPEC involves, who it’s for, what the risks and benefits are, and what to expect if it’s on the table for you or someone you care about.

What Is HIPEC Surgery?

HIPEC is a two-stage procedure that combines surgery and heated chemotherapy, delivered directly into the abdomen:

• Stage 1: Cytoreductive Surgery (CRS) – Surgeons remove all visible tumour deposits from the abdominal cavity. This can include parts of the bowel, peritoneum, appendix, ovaries, and more.
• Stage 2: Heated Chemotherapy (HIPEC) – With all visible tumours removed, heated chemo is circulated through the abdominal cavity for around 60 to 90 minutes while you’re still under anaesthetic. The chemo is heated to around 42°C to enhance its cancer-killing potential.

Unlike standard chemo that travels through your bloodstream, HIPEC delivers a high dose straight to the source, where microscopic cancer cells might still be hiding. The heat helps boost its effectiveness, while the direct delivery minimises side effects elsewhere in the body.

Who Is HIPEC For?

HIPEC is a niche treatment, not everyone qualifies, and not every hospital offers it. In general, it’s considered for patients whose bowel cancer has spread to the peritoneum (the lining of the abdominal cavity), but not to distant organs like the lungs or liver. You may be considered if:

• Your cancer is confined to the abdominal cavity
• You’re in otherwise good physical health and can handle a major operation
• Surgeons believe they can remove most or all visible tumour deposits

HIPEC may also be used for other rare abdominal cancers, including appendix cancers like pseudomyxoma peritonei. It’s a highly specialised treatment and usually only offered through major public or private cancer centres.

Where Is HIPEC Available in Australia?

HIPEC isn’t offered at every hospital. In Australia, you’ll usually need to be referred to a large tertiary centre in a major city, like Sydney, Melbourne, Brisbane, or Adelaide. These centres have specialist surgical oncology teams trained in both cytoreductive surgery and HIPEC.

If you’re in a rural or regional area, be prepared to travel. You’ll also likely need to stay near the hospital for follow-up care during recovery.

What to Expect: Before, During, and After HIPEC

Before Surgery

• Assessments and Scans: You’ll need CT, MRI, PET, and possibly a diagnostic laparoscopy to confirm the cancer’s location and spread.
• Multidisciplinary Team (MDT) Review: Your case will be reviewed by specialists including surgeons, oncologists, radiologists, and anaesthetists.
• Prehabilitation: Some centres may help you optimise your nutrition, physical strength, and emotional health before surgery.

During Surgery

• Step 1 – Cytoreduction: Surgeons remove all visible tumours. This may include bowel resections, omentectomy, removal of the spleen or gallbladder, or gynaecological organs.
• Step 2 – HIPEC: The abdominal cavity is bathed in heated chemotherapy for around 60–90 minutes.

After Surgery

• ICU or High-Dependency Unit: You’ll likely spend your first few days being closely monitored.
• Hospital Stay: Most patients stay in hospital for 10–21 days depending on complications and recovery.
• Home Recovery: Full recovery can take weeks or months and may involve:
  • Stoma management (if needed)
  • Nutritional support and appetite issues
  • Pain and fatigue management
  • Physio and exercise rehab
  • Mental health support

This isn’t keyhole surgery. HIPEC is one of the most complex operations performed in oncology and your body will need time to recover.

What Are the Benefits of HIPEC?

For the right patient, HIPEC can offer real hope. Potential benefits include:

• Improved survival outcomes compared to chemo alone
• High-dose chemo where it’s needed, with less impact on the rest of your body
• Chance of long-term remission if complete tumour removal is achieved

It’s not a guaranteed cure. But for patients with peritoneal metastases, HIPEC can offer the best chance of extended life and sometimes even long-term control of disease.

What Are the Risks and Side Effects?

This is big surgery, with big risks. Some of the most common include:

• Infection (wound or abdominal)
• Bleeding and need for transfusion
• Bowel leaks or obstructions
• Blood clots
• Kidney or liver stress
• Fatigue, appetite loss, weight loss
• Ongoing changes in bowel function

While systemic chemo side effects are reduced, you may still experience temporary nausea, blood count drops, or hair thinning. It’s also an emotionally intense procedure, many patients benefit from psychological support both before and after.

How to Prepare for HIPEC Surgery

If HIPEC is on the table, preparation matters. You can’t control everything, but you can set yourself up for the best possible outcome by:

• Asking questions: Understand the intent, risks, and what recovery might look like for you.
• Organising support: Line up help with transport, meals, housework, kids, and appointments.
• Looking after your health: Eat well, stay active (as tolerated), and follow pre-surgery advice from your care team.
• Planning ahead: Consider advance care planning just in case. It’s not pessimistic, it’s practical.
• Reaching out: Contact Bowel Cancer Australia for guidance, peer support, and connection to a nurse if needed.

Life After HIPEC: Recovery and Monitoring

Recovery from HIPEC is a long game. You might feel exhausted for weeks, and your gut may take time to adjust. Common experiences include:

• Fatigue that lingers for months
• Digestive changes and food sensitivity
• Emotional swings or depression
• Frustration at slow progress

Follow-up care usually includes:

• CT or PET scans every few months to monitor recurrence
• Bloodwork and tumour marker tracking
• Appointments with your oncology and surgical team
• Supportive care like physio, dietetics, and mental health support

Some people go back to work or regular routines in a few months. Others take longer. There’s no “right” pace, only what works for your body and your life.

Is HIPEC Covered in Australia?

Yes, in the public system, HIPEC is generally covered by Medicare. In the private system, it depends on your health insurance.

Here’s what to check:

• Ask your specialist about expected out-of-pocket costs
• Confirm your insurance covers the hospital, surgeon, and HIPEC procedure
• Speak to a hospital social worker or financial counsellor for support if needed

Where to Get Trusted Information and Support

• Your treating team – Your best guide to what’s right for you personally
• Bowel Cancer Australia – Nurse helpline, peer connections, practical resources, and support for advanced cancer

Final Thoughts

HIPEC is not for everyone. But if it’s being discussed, it’s worth understanding and worth asking the hard questions about. It’s major surgery, yes. But it also offers something that’s often in short supply during advanced cancer: hope. Not a guarantee, but a real chance.

If you’re facing this decision, don’t go it alone. Ask for support. Ask for clarity. And trust that whatever you decide, it’s the right decision for you.