Rectal Cancer
Conditions
Brief summary
The conventional intersphincteric resection (ISR) for low rectal cancer requires a combined abdominal and perineal approach, and followed with a handsewn coloanal anastomosis, which is time consuming and difficult to accomplish. A complete laparoscopic abdominal approach partial intersphincteric resection has been proved to be a safe and feasible alternative for low rectal cancer treatment, with the advantages of technical convenience and avoiding a permanent ostomy. But there are few reports concerning differences in clinical outcomes between patients with or without neoadjuvant chemoradiotherapy undergoing partial ISR surgery. Therefore, it is necessary to compare the functional outcomes (including anal and sexual function, and postoperative quality of life \[QOL\]) and oncologic outcomes of patients who underwent completely abdominal approach laparoscopic partial ISR surgery after neoadjuvant chemoradiotherapy, with those who received ISR surgery directly. Furthermore, the operation difficulty between the above two groups is also worthy of intensive study.
Detailed description
Patients with cT1 to cT2 low rectal cancer are directly operated through completely abdominal approach laparoscopic partial ISR surgery. Patients with cT3 low rectal cancer are firstly treated with standard neoadjuvant chemoradiotherapy until down staged to ycT1 to ycT2. The postoperatively functional outcomes and oncologic outcomes between the two groups are compared, including anal and sexual function, QOL and local recurrence rate. The operation difficulty between the above two groups is also investigated, including operation time, the intraoperative and postoperative complications, mesorectum integrity, time for mobilizing the intersphincteric plane, the intactness of the fascia of the levator ani muscle, pubis coccygeus, puborectalis, and external sphincter.
Interventions
PROCEDURELap partial ISR
A direct laparoscopic surgery with completely abdominal approach laparoscopic partial intersphincteric resection
COMBINATION_PRODUCTNCRT+Lap partial ISR
Preoperative radiation and chemotherapy + laparoscopic completely abdominal approach laparoscopic partial intersphincteric resection
Sponsors
Zhongnan Hospital
Study design
Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No
Inclusion criteria
* Biopsy-proven moderate or well differentiated adenocarcinoma * Rullier classification of low rectal cancer (types Ⅱ: juxta-anal tumor) * Clinical staging: initially staged as T1 -2 or down staged to T1-2 after neoadjuvant chemoradiotherapy;
Exclusion criteria
* Without signing informed consent, poor compliance * Unfit for laparoscopy * Other serious diseases not suitable for participating in this clinical trial * A degree of preoperative fecal incontinence * After preoperative neoadjuvant chemoradiotherapy, the sphincter function, sexual function and others involved in this trail are seriously affected
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The damage degree of anal function | 5 years | The value of this index in group A was defined as the preoperative anal function score minus the postoperative anal score. The value of this index in group B was defined as the anal function score which the patients have completed the standard neoadjuvant therapy minus the postoperative anal function score. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Time for mobilizing the intersphincteric space | 5 years | Time for mobilizing the intersphincteric space |
| The intactness of levator anus muscle fascia | 5 years | The intactness of levator anus muscle fascia |
| he quality of specimen pathology: total mesorectal excision (TME) quality, the involvement of distal margin and circumferential margin | 5 years | The quality of specimen pathology: total mesorectal excision (TME) quality, the involvement of distal margin and circumferential margin |
| Intraoperative and postoperative complications | 5 years | Intraoperative and postoperative complications |
| Local recurrence | 5 years | Local recurrence |
Countries
China
Contacts
Primary ContactQun Qian, M.D.
Outcome results
None listed