Early-Stage Prostate Cancer: Is Surgery Always Necessary? (2026 Update)

For early-stage (low-risk) prostate cancer, active surveillance — monitoring at set intervals rather than treating right away — is one of the standard options, while intermediate-risk disease and above typically calls for choosing between surgery and radiation therapy based on the patient's condition.

Key Takeaways

• For low-risk early-stage prostate cancer, active surveillance — monitoring with PSA, MRI, and repeat biopsy as needed at set intervals instead of immediate treatment — is a standard option.
• For intermediate-risk disease, both radical prostatectomy and radiation therapy are standard treatments; the choice is often made based on differences in the nature of side effects rather than differences in outcomes.
• Korea's 5-year relative survival rate for prostate cancer is 96.9%, a nationwide figure (National Cancer Registration Statistics 2019–2023, National Cancer Center Korea), up 37.7 percentage points from 1993–1995.
• Treatment decisions are not based on stage alone but combine PSA level, Gleason score (grade group), stage, age, life expectancy, and comorbidities.
• Robotic prostatectomy is widely performed with extensive experience in Korea, and carbon-ion (heavy particle) therapy has been available since 2023, but neither is suitable for every early-stage case — indications are specifically defined.

Does Early-Stage Prostate Cancer Always Require Immediate Surgery?

• Not necessarily. Prostate cancer often progresses slowly, which is why it is one of the rare cancers for which active surveillance — withholding treatment while monitoring at set intervals — is included among the standard options for low-risk disease.
• Cases with low PSA, the lowest grade group, and a small tumor confined within the prostate are classified as low-risk. In such cases, the burden of side effects such as urinary incontinence or sexual dysfunction from treatment can outweigh the benefit of treatment, which is why this approach is used.
• However, this approach requires the patient to reliably continue the scheduled PSA, MRI, and biopsy follow-ups even after returning home; treatment is initiated promptly if signs of progression appear.

What Tests Determine Stage and Risk Group?

• If PSA blood levels are elevated or a digital rectal exam shows abnormalities, a prostate MRI is typically done first. If the MRI reveals a suspicious area, a targeted biopsy (MRI-fusion biopsy) is performed on that site, and the resulting Gleason score is organized into a grade group from 1 to 5 — the higher the grade group, the more aggressive the cancer.
• To determine stage, MRI is used to assess whether the cancer is confined within the prostate, has penetrated the prostate capsule, or has invaded surrounding organs. For higher-risk cases, a bone scan or PSMA PET is additionally performed to check for bone and lymph node metastasis.
• PSA, grade group, and stage are combined to classify the cancer as low-, intermediate-, or high-risk. Cases with lymph node involvement are considered locally advanced, while spread to bone or other organs is classified as metastatic. Having the original PSA, MRI, and biopsy (Gleason score) records ready before coming to Korea is the key to an effective remote review (pre-arrival review).

How Do You Choose Between Surgery and Radiation?

• For intermediate-risk disease, both radical prostatectomy and radiation therapy are standard treatments. The decision is less about which is 'better' and more about which is 'right' for the individual patient.
• Robotic radical prostatectomy allows nerve-sparing manipulation within the narrow pelvic space, which is known to be advantageous for recovery of urinary continence and erectile function, and Korea has extensive experience with this procedure. Hospital stays are typically 5–7 days.
• If radiation therapy is chosen, a short course of hormone therapy may be combined depending on the case, and approaches such as intensity-modulated radiation therapy (IMRT) or stereotactic body radiation therapy (SBRT) that reduce the number of sessions based on risk group and prostate size are also considered.
• Urinary incontinence appears in nearly all patients for a period immediately after surgery, but it generally resolves over several months with pelvic floor exercises; the pace of recovery varies with age and the degree of nerve preservation.

FAQ — Isn't Active Surveillance Risky?

For low-risk disease, it is a standard option. Changes are detected through PSA, MRI, and biopsy at set intervals, allowing a timely switch to treatment when needed. However, since these tests must be reliably continued in the patient's home country, it is important to plan for follow-up care after returning home.

FAQ — Can Carbon-Ion Therapy Be Used for Early-Stage Cancer?

Carbon-ion (heavy particle) therapy is a type of radiation therapy available in Korea since 2023, used for localized prostate cancer in courses of roughly 12 sessions. However, eligibility depends on factors such as prior radiation history, presence of artificial hip joints, and bowel/bladder condition, so it is not suitable for every early-stage case.

Sources and Notes

• This article was written based on general information from the National Cancer Registration Statistics 2019–2023 (Korea Central Cancer Registry, National Cancer Center Korea), the National Cancer Information Center, and NCCN patient-level guidelines.
• This content is provided for general medical information purposes only. Diagnosis, treatment approach, and outcomes may vary depending on individual circumstances. Please consult a medical professional to determine an accurate diagnosis and treatment plan.