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1.
Colorectal Dis ; 22(11): 1603-1613, 2020 11.
Article in English | MEDLINE | ID: mdl-32649005

ABSTRACT

AIM: There are few data evaluating the long-term outcomes of intersphincteric resection (ISR), especially the impact of inclusion of more juxtapositioned and intra-anal tumours on oncological and functional outcomes. We compared the oncological and functional results of patients treated by total mesorectal excision and ISR for low rectal cancer over a 25-year period. METHOD: This is a retrospective study from a single institution evaluating results of ISR over three periods: 1990-1998, 1999-2006 and 2007-2014. Patients treated by partial or total ISR, with or without neoadjuvant chemoradiotherapy, for low rectal cancer (≤ 6 cm from the anal verge) were included. We compared postoperative morbidity, quality of surgery and oncological and functional outcomes in the time periods studied. RESULTS: Of 813 patients operated on for low rectal cancer, 303 had ISR. Tumour stage did not differ; however, the distance of the tumour from the anorectal junction decreased from 1 to 0 cm (P < 0.001) and the distal resection margin shortened from 25 to 10 mm (P < 0.001) from 1990 to 2014. The postoperative morbidity and quality of surgery did not change significantly over time. The 5-year local recurrence (4.3% vs 5.9% vs 3.5%; P = 0.741) and disease-free survival (72% vs 71% vs 75%; P = 0.918) did not differ between the three time periods. Functional results improved during the last period; however, overall 42% of patients experienced major bowel dysfunction. CONCLUSION: Pushing the envelope of sphincter-saving resection in ultra-low rectal cancer reaching or invading the anal sphincter did not compromise oncological and functional outcomes. The main limitation of the ISR procedure appears to be functional rather than oncological, suggesting that bowel rehabilitation programmes should be developed.


Subject(s)
Neoplasm Recurrence, Local , Rectal Neoplasms , Anal Canal/surgery , Humans , Neoplasm Recurrence, Local/epidemiology , Rectal Neoplasms/surgery , Rectum/surgery , Retrospective Studies , Treatment Outcome
2.
Colorectal Dis ; 22(11): 1545-1552, 2020 11.
Article in English | MEDLINE | ID: mdl-32463973

ABSTRACT

AIM: Restorative total mesorectal excision (TME) for rectal cancer after high-dose pelvic radiotherapy for prostate cancer has been reported to provide an unacceptable rate of pelvic sepsis. In a previous publication we proposed that delayed coloanal anastomosis (DCAA) should be performed in this situation. The present study aimed to assess the feasibility and outcomes of this strategy. METHOD: Between 2000 and 2018, 1094 men were operated on for rectal cancer in our institution. All men with T2/T3 mid and low rectal cancer with preoperative radiotherapy and restorative TME were considered for this study (n = 416). Patients with external-beam high-dose radiotherapy (EBHRT) for prostate cancer (70-78 Gy) were identified and compared with patients with conventional long-course chemoradiotherapy (CRT) followed by TME. We compared our already published historical cohort (2000-2012), including arm A (CRT + TME; n = 236) and arm B (EBHRT + TME; n = 12), with our early cohort (2013-2018), including arm C (CRT + TME; n = 158) and arm D (EBHRT + TME-DCAA; n = 10). The end-points were morbidity, pelvic sepsis, reoperation rate and quality of the specimen. RESULTS: Overall morbidity was not significantly different between groups. Pelvic sepsis decreased from 50% (arm B) to 10% (arm D) with the use of DCAA (P = 0.074), and was similar between arms A, C and D. Quality of the specimen was not significantly different between the four groups. CONCLUSION: Our results suggest that TME with DCAA in patients with previous EBHRT is feasible, with the same postoperative pelvic sepsis rate as conventional CRT.


Subject(s)
Digestive System Surgical Procedures , Prostatic Neoplasms , Rectal Neoplasms , Anastomosis, Surgical/adverse effects , Humans , Male , Prostatic Neoplasms/radiotherapy , Prostatic Neoplasms/surgery , Rectal Neoplasms/surgery , Treatment Outcome
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