Surgery: Goals of Cancer Surgery, Minimally Invasive Techniques, and What to Know Before and After

Surgery is the oldest form of cancer treatment and remains the main way to cure solid cancers. Its goal is direct: remove the tumor along with a safe margin of surrounding tissue and the relevant lymph nodes, creating the best chance for a cure. From early breast cancer to colorectal, lung, and stomach cancers, surgery is at the heart of treatment plans for early-stage cancer.

Modern cancer surgery is no longer synonymous with "big cuts": minimally invasive laparoscopy and robotic-assisted surgery mean smaller incisions, less bleeding, and faster recovery. And the precise combination of surgery with chemotherapy, radiotherapy, and immunotherapy has turned many tumors that were once "unresectable" into ones that can be removed.

Goals and Timing of Surgery

Cancer surgery has several different goals: curative resection (the mainstay for early-stage cancer), diagnostic biopsy (to obtain tissue for confirmation), debulking surgery (for example, removing as much visible tumor as possible in ovarian cancer to maximize the effect of chemotherapy), and palliative surgery (to relieve symptoms such as bowel obstruction or bleeding and improve quality of life).

Timing also matters: some cancers are operated on first and then treated with chemotherapy and radiotherapy (such as colorectal cancer); others receive preoperative (neoadjuvant) treatment first to shrink the tumor before surgery (such as esophageal cancer, locally advanced breast cancer, and rectal cancer), improving the chance of a cure and of preserving organs. Preoperative assessment includes heart and lung function and overall condition to make sure the body can withstand surgery.

Minimally Invasive Surgery and Technological Advances

Laparoscopic surgery replaces the traditional long incision with a few small cuts. The surgeon operates through a camera and long instruments. Postoperative pain is milder, patients get out of bed sooner, and hospital stays are shorter, with results comparable to open surgery. It is now a routine option for colorectal, stomach, and other cancers. Robotic surgery (such as the da Vinci system) offers a more precise three-dimensional view and flexible wrist-like movements, with clear advantages in narrow spaces such as prostate removal and rectal cancer surgery.

Other advances include: sentinel lymph node techniques (avoiding unnecessary lymph node dissection in breast cancer and melanoma), intraoperative fluorescence navigation, and "function-preserving" surgical concepts such as breast-conserving surgery and reconstruction, and sphincter preservation in low rectal cancer — the goal is not just to remove the tumor, but also to preserve quality of life after surgery.

Surgical Risks and Common Concerns

All surgery carries risks: bleeding, infection, anesthesia risks, and specific risks depending on the surgical site (such as anastomotic leak in bowel surgery). The surgeon will explain these in detail before the operation and assess your physical condition; older age itself is not a contraindication — overall functional status matters more than the number on your ID card.

"Surgery will make cancer cells spread" is the most common misconception — there is no evidence to support this. On the contrary, delaying surgery may allow the tumor to keep growing. Another common question is about lymph node removal: lymph nodes are key to determining stage and the extent of clearance. Doctors will decide the extent of removal according to guidelines — no more and no less than needed.

Recovery and Follow-Up After Surgery

Modern postoperative recovery follows the "Enhanced Recovery After Surgery" (ERAS) concept: getting out of bed early, resuming eating early, and effective pain control can shorten hospital stays and reduce complications. Follow your doctor's instructions for deep breathing and coughing exercises to prevent lung infections.

After discharge, watch for changes in the wound (redness, swelling, discharge, or fever — seek medical attention promptly) and attend follow-up appointments on time. The pathology report usually comes out one to two weeks after surgery. It determines the final stage and whether adjuvant treatment is needed. Regular follow-up afterward (imaging, tumor markers, etc.) is the line of defense for monitoring recurrence — be sure to attend on time.

Clinical Trials: One More Treatment Option

Perioperative treatment strategies are a hot research area: preoperative immunotherapy, neoadjuvant targeted therapy, and other approaches are rewriting the timing and outcomes of surgery for many cancers through clinical trials.

The CancerLink platform can match you with recruiting clinical studies in Hong Kong based on cancer type, stage, and genetic mutations. Once successfully matched and enrolled, study-related treatment costs are fully covered. If your tumor is not currently suitable for surgery, some trial protocols may offer a turning point.

It is normal to feel nervous about surgery. Write down your concerns and ask about them one by one at your preoperative consultation: the extent of surgery, alternatives, risks, and recovery time. A surgery you fully understand is far better than one full of questions.