To investigate the oncological outcome of lateral lymph node dissection in low rectal cancer based on MRI
Our study design is a multicenter, prospective, registry study. We would enroll 268 patients with lower rectal cancer whose preoperative MRI showed laterally lymph node diameter ≥ 5mm. The postoperative adjuvant chemoradiotherapy is determined by the pathological results. For patients of stage II and patients of stage III with unfavorable histologic features, six months of adjuvant chemotherapy of fluorouracil-based regimen with radiotherapy of 45.0 \~ 50.5 Gy are recommended. The postoperative examination should be performed every three months in the first two years and every six months in the following three years. Our study is expected to last five years, of which two years for recruiting patients, three years for follow-up.
Study Type
OBSERVATIONAL
Enrollment
268
TME and lateral lymph node dissection is performed in rectal cancer patients with lateral lymph node short diameter ≥ 5 mm.
Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College
Beijing, Beijing Municipality, China
RECRUITINGPathological positive rate
The proportion of patients with positive lateral lymph node which was confirmed pathologically.
Time frame: 3-year.
Local recurrence rate
The proportion of patients with local recurrence after 3 years of surgery
Time frame: 3-year
Overall survival rate
The proportion of patients survived after 3 years of surgery
Time frame: 3-year
Disease free survival
The proportion of patients with no disease recurrence and metastasis after 3 years of surgery.
Time frame: 3-year
Early morbidity rate
The early morbidity rate is defined as the event observed during operation and within 30 days after surgery
Time frame: 30 days
Duration of the surgery
The duration of time between the start and the end of the surgery.
Time frame: 1 day
Postoperative complications
Complications occurring within 30 days after surgery, mainly urinary and sexual functions.
Time frame: 30 days
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