[Recurrence and survival rate after surgical therapy of rectal carcinoma]

Multivisceral Resection for Locally Advanced Rectal Cancer: Prognostic Factors Influencing Outcome

AIMS

To assess outcome in patients with locally advanced rectal cancer undergoing multivisceral resection.

METHODS

Retrospective study of 30 consecutive patients (mean age 67.8 years) with primary locally advanced rectal cancer undergoing en bloc multivisceral resection of the organs involved with curative intent between 1998 and 2010. Overall survival, local and distal recurrence, and disease-free survival were analyzed by the Kaplan-Meier method. Risk factors for clinical outcome were obtained using a Cox multivariate model.

RESULTS

Postoperative complications occurred in 76.7% of patients and the in-hospital mortality rate was 10%. The median follow-up was 28.8 months. A total of 19 patients died at follow-up. Of the 11 patients who were alive, 7 were free of disease. In the multivariate analysis, lymph node involvement, stage II, and lymph vascular invasion were significantly associated with survival, and stage III showed a strong trend towards significance. Suture dehiscence (peritonitis and intra-abdominal abscess) showed a significant trend towards a higher local recurrence. Lymph vascular invasion was associated with a higher distant recurrence.

CONCLUSION

Lymph node involvement was associated with worse survival, whereas stage II and absence of lymph vascular invasion were associated with a better survival. Lymph vascular invasion was associated with a higher distant recurrence.

Multivisceral resection for T4 or recurrent colorectal cancer

BACKGROUND

Approximately 10% of patients with colorectal cancer have locally advanced disease with peritoneal involvement (T4a) or invasion of adjacent organs (T4b) at the time of diagnosis. Of patients who undergo resection with curative intent, between 7 and 33% develop isolated locoregional recurrences. R0 surgical excision is potentially curative.

METHODS

We reviewed the literature relating to multivisceral resection for T4 or recurrent colorectal cancer.

RESULTS

Comprehensive staging to identify the local and systemic extent of disease is essential to determine resectability and patient suitability for a curative approach. PET scans and pelvic MRI (rectal) staging and a coordinated multispecialty input to neoadjuvant treatment, multivisceral surgical resection, reconstruction and adjuvant chemotherapy are essential. Intraoperative radiotherapy and hyperthermic intraperitoneal chemotherapy may have a role in selected patients. R0 resection can achieve 5-year local control rates for primary locally advanced and recurrent colorectal cancer of up to 89 and 38%, respectively, and overall 5-year survival up to 66 and 25%, respectively.

CONCLUSION

An aggressive surgical strategy as part of a multimodal strategy in the treatment of locally advanced or recurrent colorectal cancer in the absence of incurable metastatic disease affords the best prospect for long-term survival in selected patients.

Time to locoregional recurrence after curative resection of rectal carcinoma is prolonged after neoadjuvant treatment: a systematic review and meta-analysis

AIM

A systematic review of the literature with meta-analysis was performed to evaluate the time to locoregional recurrence after curative resection of rectal carcinoma, assuming that this time is prolonged after neoadjuvant radiochemotherapy and/or present day surgery.

METHOD

English and German language peer-reviewed articles published between 1980 and 2007 were selected. Twenty-five of 118 studies fulfilled the defined inclusion and exclusion criteria. For some special questions, data of the Erlangen Registry of Colorectal Carcinoma (ERCRC) from 1985 to 1997 are reported.

RESULTS

After conventional surgery of rectal carcinoma, 75% (range 66-84%) of locoregional recurrence presented during the first 2 years after resection. Following the introduction of total mesorectal excision surgery and the use of neoadjuvant treatment, a general reduction of the frequency of local recurrence combined with a prolongation of the time to local recurrence was observed. In the practice of today, in particular after neoadjuvant long-course radiochemo-or radiotherapy, 24% (range 8-40%) of all local recurrences present later than 5 years after primary therapy. In contrast, such late local recurrences are observed in only 8% (range 5-9%) following primary surgery alone.

CONCLUSION

For a definite assessment of the therapeutic results regarding local control, a minimal follow up of 7-8 years either after neoadjuvant long-course radiochemo- or radiotherapy and a minimum of 5 years after surgery alone is necessary. For patients with primary surgery followed by adjuvant therapy, it is not possible to make a clear statement.

Multivisceral resections for locally advanced rectal cancer

OBJECTIVE

The aim of this study was to evaluate the effectiveness of en bloc multivisceral resection of organs involved by locally advanced rectal carcinoma.

METHOD

A total of 312 patients with primary rectal cancer underwent surgery between January 1994 and April 2005. Of these, 57 patients (18.3%) had macroscopically direct invasion of an adjacent organ or structure, and underwent multivisceral resection with curative intent. Survival analyses were made by the Kaplan-Meier and the Cox proportional hazards regression model.

RESULTS

The postoperative mortality was 3.5%. The overall survival rate at 1, 3 and 5 years was 96.4%, 81.6% and 49.0%. Age (> or = 65 years), depth of tumour invasion (pT3 stage), lymph node status (pN0), tumour stage (III A-B), grading (G1), vascular and neural invasion (not extensive), type of adhesion (inflammatory) and type of resection (R0) were significant factors favouring survival in the univariate analysis. Only two factors, lymph node status pN0 (P = 0.007) and R0 resection (P = 0.005) were independently significant factors in the multivariate analysis.

CONCLUSION

R0 resection and pN0 status influence overall survival for locally advanced rectal carcinoma.