Effect of the circumferential resection margin on survival following rectal cancer surgery

BACKGROUND

The aim was to determine the effect of the circumferential resection margin (CRM) on overall survival following surgical excision of rectal cancer.

METHODS

The effect of CRM on survival was examined by case mix-adjusted analysis of patients undergoing potentially curative excision of a rectal cancer between 1998 and 2002.

RESULTS

Of 1896 patients, 1561 (82.3 per cent) had recorded data on the CRM. In 232 patients (14.9 per cent) tumour was found 1 mm or less from the CRM. In 370 patients (23.7 per cent) it was over 1 mm but no more than 5 mm from the CRM, and in 288 (18.4 per cent) it was over 5 mm but no more than 10 mm from the CRM. The remaining 671 patients (43.0 per cent) had a CRM exceeding 10 mm. Overall 5-year survival rates for these groups were 43.2, 51.7, 66.6 and 66.0 per cent respectively. Compared with patients with a CRM exceeding 10 mm, the adjusted risk of death was significantly increased for patients with a CRM of 1 mm or less (hazard ratio (HR) 1.61, P < 0.001) and those with a margin greater than 1 mm but no larger than 5 mm (HR 1.35, P = 0.005). There was no added risk for patients with tumour more than 5 mm but 10 mm or less from the CRM (HR 1.02, P = 0.873). The adverse effect of a CRM greater than 1 mm but no larger than 5 mm was found particularly in mid-rectal cancers.

CONCLUSION

A predicted CRM of 5 mm or less on preoperative staging should be considered for neoadjuvant treatment.

Volume-outcome analysis of colorectal cancer-related outcomes

BACKGROUND

Significant associations between caseload and surgical outcomes highlight the conflict between local cancer care and the need for centralization. This study examined the effect of hospital volume on short-term outcomes and survival, adjusting for the effect of surgeon caseload.

METHODS

Between 1998 and 2002, 8219 patients with colorectal cancer were identified in a regional population-based audit. Outcomes were assessed using univariable and multivariable analysis to allow case mix adjustment. Surgeons were categorized as low (26 or fewer operations annually), medium (27-40) or high (more than 40) volume. Hospitals were categorized as low (86 or fewer), medium (87-109) or high (more than 109) volume.

RESULTS

Some 7411 (90.2 per cent) of 8219 patients underwent surgery with an anastomotic leak rate of 2.9 per cent (162 of 5581), perioperative mortality rate of 8.0 per cent (591 of 7411) and 5-year survival rate of 46.8 per cent. Medium- and high-volume surgeons were associated with significantly better operative mortality (odds ratio (OR) 0.74, P = 0.010 and OR 0.66, P = 0.002 respectively) and survival (hazard ratio (HR) 0.88, P = 0.003 and HR 0.93, P = 0.090 respectively) than low-volume surgeons. Rectal cancer survival was significantly better in high-volume versus low-volume hospitals (HR 0.85, P = 0.036), with no difference between medium- and low-volume hospitals (HR 0.96, P = 0.505).

CONCLUSION

This study has confirmed the relevance of minimum volume standards for individual surgeons. Organization of services in high-volume units may improve survival in patients with rectal cancer.

Involvement of surgical trainees in surgery for colorectal cancer and their effect on outcome

OBJECTIVE

Surgical training in the UK is undergoing substantial changes. This study assessed: 1) the training opportunities available to trainees in operations for colorectal cancer, 2) the effect of colorectal specialization on training, and 3) the effect of consultant supervision on anastomotic complications, postoperative stay, operative mortality and 5-year survival.

METHOD

Unadjusted and adjusted comparisons of outcomes were made for unsupervised trainees, supervised trainees and consultants as the primary surgeon in 7411 operated patients included in the Northern Region Colorectal Cancer Audit between 1998 and 2002.

RESULTS

Surgery was performed in 656 (8.8%) patients by unsupervised trainees and in 1578 (21.3%) patients by supervised trainees. Unsupervised operations reduced from 182 (12.4%) in 1998 to 82 (6.1%) in 2002 (P < 0.001). Consultants with a colorectal specialist interest were more likely than nonspecialists to be present at surgical resections (OR 1.35, 1.12-1.63, P = 0.001) and to provide supervised training (OR 1.34, 1.17-1.53, P < 0.001). Patients operated on by unsupervised trainees were more often high-risk patients, however, consultant presence was not significantly associated with operative mortality (OR 0.83, 0.63-1.09, P = 0.186) or survival (HR 1.02, 0.92-1.13, P = 0.735) in risk-adjusted analysis. Supervised trainees had a case-mix similar to consultants, with shorter length of hospital stay (11.4 vs 12.4 days, P < 0.001), but similar mortality (OR 0.90, 0.71-1.16, 0.418) and survival (HR 0.96, 0.89-1.05, P = 0.378).

CONCLUSION

One third of patients were operated on by trainees, who were more likely to perform supervised resections in colorectal teams. There was no difference in anastomotic leaks rates, operative mortality or survival between unsupervised trainees, supervised trainees and consultants when case-mix adjustment was applied. This study would suggest that there is considerable underused training capacity available.

Impact of surgeon volume and specialization on short-term outcomes in colorectal cancer surgery

Background

Several studies have shown a relationship between surgeon volume and outcomes in colorectal cancer surgery. The aim of this study was to determine the impact of surgeon volume and specialization on primary tumour resection rate, restoration of bowel continuity following rectal cancer resection, anastomotic leakage and perioperative mortality.

Methods

The Northern Region Colorectal Cancer Audit Group conducts a population-based audit of patients with colorectal cancer managed by surgeons. This study examined 8219 patients treated between 1998 and 2002. Outcomes were modelled using multivariate logistic regression analysis.

Results

Tumour resection was performed in 6949 (93·8 per cent) of 7411 patients. High-volume surgeons with an annual caseload of at least 18·5 (odds ratio (OR) 1·53 (95 per cent confidence interval (c.i.) 1·10 to 2·12); P = 0·012) and colorectal specialists (OR 1·42 (95 per cent c.i. 1·06 to 1·90); P = 0·018) were more likely to perform elective sphincter-saving rectal surgery. In elective surgery, the risk of perioperative death was lower for high-volume surgeons (OR 0·58 (95 per cent c.i. 0·44 to 0·76); P &lt; 0·001), but this was not the case in emergency surgery.

Conclusion

High-volume surgeons had lower perioperative mortality rates for elective surgery, and were more likely to use restorative rectal procedures.

Does cognitive function influence alaryngeal speech rehabilitation?

BACKGROUND

We sought to define the cognitive domains that influence valved speech rehabilitation.

METHODS

Sixteen laryngectomees with primary tracheoesophageal punctures were randomly recruited from one head and neck unit. They were assessed by a consultant neuropsychologist and a speech therapist. Speech therapy time was determined from speech therapy notes.

RESULTS

The Digit Symbol Substitution Test, assessing learning speed and processing speed, correlated significantly with speech therapy time in the first (p = .002) and third (p = .014) postoperative years, respectively. Categorical fluency assessment correlated positively with speech therapy time in the first year (p = .009). Learning speed (p = .007) and categorical fluency (p = .041) correlated positively with the fall in speech therapy input between the first and third year after laryngectomy.

CONCLUSIONS

Learning speed, processing speed, and categorical fluency strongly influence alaryngeal speech rehabilitation. This study highlights the potential for pre-laryngectomy cognitive assessment to help plan alaryngeal speech rehabilitation. This has significant resource implications.

Separate lives, different interests: male and female reproduction in the Gambia

We report the initial findings of a research programme on the fertility and reproductive health of both men and women in rural Gambia. The reproductive experiences of men and women in the population studied were very different. During the period 1993-97, the total fertility rates were 12.0 for men and 6.8 for women. For men fertility began later, reached higher levels and continued into older ages than for women. Through serial and polygynous marriages, men were able to extend their reproduction beyond what would be possible with one woman. Of the married men interviewed, 40% were married polygynously. Men's fertility preferences indicated that they recognized their reproductive potentials to be greater than those of their individual wives. On average, married men desired 15.2 children for themselves and 7.3 for each wife. In this polygynous population the means available for attaining reproductive goals were different for the two sexes, depending on the separate lives and different interests of men and women.