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  • Articles: DFG German National Licenses  (2)
  • Key words: Endorectal ultrasound — Three-dimensional endorectal ultrasound — Rectal cancer — Staging — Endorectal MR imaging — Surface coil — Cancer  (1)
  • Key words: Endoscopic palliation — Rectal cancer — Self-expanding metal stent — Endoprosthesis  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Application of rectal stents for palliation of obstructing rectosigmoid cancer (1997)
    Springer
    Surgical endoscopy and other interventional techniques 11 (1997), S. 758 -761 
    Details
    ISSN: 1432-2218
    Keywords: Key words: Endoscopic palliation — Rectal cancer — Self-expanding metal stent — Endoprosthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The rationale of palliative endoscopic treatment is to avoid a colostomy in patients with advanced disease and limited life expectancy. This study was conducted to evaluate the role of endoscopic stent implantation for palliation of obstructing rectal cancer. Methods: Overall, 19 patients (aged 47–87 years) with nonresectable or metastatic rectal cancer were treated by stent insertion after laser recanalization or dilation. Three types of stents, i.e., plastic tubes (n= 8), self-expanding mesh stents (n= 6), and endocoil stents (n= 5), were used to maintain luminal patency. Results: Endoscopic stent implantation was successfully performed in all 19 patients. Long-term luminal patency and satisfactory bowel function were achieved in 16 of 19 patients (84%). After a median follow-up of 6 months, eight of the patients have died and eight are still alive without evidence of recurrent obstruction. Dislocation of the endoprosthesis occurred in two of eight plastic tubes and one of five mesh stents. Recurrent obstruction due to tumor ingrowth was only observed in patients treated with self-expanding mesh stents (n= 2). In spite of reinsertion and laser therapy a colostomy was required in three of 19 patients. There was no evidence of treatment failure in five patients who received endocoil stents. None of the patients experienced serious complications related to the endoscopic procedure. Conclusions: Endoscopic stent implantation seems to be a safe and efficient palliative approach to selected patients with obstructing rectal cancer. Currently, self-expanding coil stents are superior to other devices because of lower risk of dislocation and tumor ingrowth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004649900444
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Prospective comparison of endorectal ultrasound, three-dimensional endorectal ultrasound, and endorectal MRI in the preoperative evaluation of rectal tumorsrid="" (2000)
    Springer
    Surgical endoscopy and other interventional techniques 14 (2000), S. 1005 -1009 
    Details
    ISSN: 1432-2218
    Keywords: Key words: Endorectal ultrasound — Three-dimensional endorectal ultrasound — Rectal cancer — Staging — Endorectal MR imaging — Surface coil — Cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The aim of this study was to compare the value of endorectal ultrasound (EUS), three-dimensional (3D) EUS, and endorectal MRI in the preoperative staging of rectal neoplasms. Methods: Thirty consecutive patients with rectal tumors were assessed by EUS and endorectal MRI. Additionally, three-dimensional ultrasound was performed in a subgroup of 25 patients. EUS data were obtained with a bifocal multiplane transducer (10 MHz) and processed on a 3D ultrasound workstation. MR imaging was carried out with a 1.5 T superconducting unit using an endorectal surface coil. Results: EUS was carried out successfully in all 30 patients, whereas endorectal MRI was not feasible in two patients. Compared with the histopathological classification, EUS and endorectal MRI correctly determined the tumor infiltration depth in 25 of 30 and 28 patients, respectively. The comparative accuracy of EUS, 3D EUS, and endorectal MRI in predicting tumor invasion was 84%, 88%, and 91%, respectively. EUS, three-dimensional EUS, and endorectal MRI enabled us to assess the lymph node status correctly in 25, 25, and 24 patients, respectively. Both three-dimensional EUS and endorectal MRI combined high-resolution imaging and multiplanar display options. Assessment of additional scan planes facilitated the interpretation of the findings and improved the understanding of the three-dimensional anatomy. Conclusion: The accuracy of three-dimensional EUS and endorectal MRI in the assessment of the infiltration depth of rectal cancer is comparable to conventional EUS. One advantage of both methods is the ability to obtain multiplanar images, which may be helpful for the planning of surgery in the future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004640000345
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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