Rectal Neoplasms
Conditions
Keywords
Rectal Cancer, Lymph Node Dissection, Rectal Surgery, Autonomic Nerves, Stage II, III lower rectal cancer
Brief summary
The purpose of this study is to evaluate the of international standard operation, mesorectal excision (ME alone) compared to Japanese standard operation, ME with lateral lymph node dissection for clinical stage II, III lower rectal cancer
Detailed description
Total mesorectal excision (TME) or mesorectal excision (ME) with lateral lymph node dissection for advanced rectal cancer is widely performed in Japan. In other countries, TME or ME without lateral lymph node dissection is the standard. In order to determine which is the better rectal cancer surgery, relapse-free survivals of these are compared as the primary endpoint.
Interventions
Mesorectal excision with lateral lymph node dissection
Mesorectal excision without lateral lymph node excision
Sponsors
Study design
Eligibility
Inclusion criteria
Preoperative criteria: 1. Histologically confirmed adenocarcinoma 2. Clinical stage II or III 3. Preoperative findings: * Main lesion of the tumor is located at the rectum * Lower tumor margin is below the peritoneal reflection * No extramesorectal lymph node swelling (Shorter diameter is less than 10 mm) * No invasion to other organ (s) 4. Patient age is more than 20 and less than 75 5. PS: 0, 1 6. No past history of chemotherapy, pelvic surgery or radiation 7. Written informed consent Operative criteria: 8. Mesorectal excision is performed 9. Operative findings: * Main lesion of the tumor is located at the rectum * Lower tumor margin is below the peritoneal reflection 10. R0 after resection
Exclusion criteria
1. Multiple cancer patients 2. Pregnant patients 3. Psychological disorder 4. Steroid administration 5. Cardiac infarction within six months 6. Severe pulmonary emphysema and pulmonary fibrosis 7. Doctor's decision for exclusion
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Relapse-free survival | Until relapsing |
Secondary
| Measure | Time frame |
|---|---|
| Local-recurrence-free survival | Until local-recurrence |
| Incidence of adverse events | 5 years |
| Incidence of major adverse events | 5 years |
| Overall survival | Overall |
| Blood loss | Operation day |
| Incidence of sexual and urinary dysfunction | 1 year |
| Operative time | Operation day |
Countries
Japan