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  • Key words: Endoscopic palliation — Rectal cancer — Self-expanding metal stent — Endoprosthesis  (1)
  • Key words: Endoscopic ultrasound — Curved array — Staging — Endosonography-guided biopsy  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 10 (1996), S. 1205-1209 
    ISSN: 1432-2218
    Keywords: Key words: Endoscopic ultrasound — Curved array — Staging — Endosonography-guided biopsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The purpose of the present study was to evaluate the accuracy of endoscopic ultrasonography (EUS) with a curved-array transducer and to determine the value of endosonography-guided biopsy. Methods: EUS was performed in 162 consecutive patients for preoperative staging of gastric or esophageal cancer (n= 122) or for EUS-guided biopsy (n= 40). All patients were examined using a flexible echoendoscope (Pentax FG32-UA) equipped with a 7.5-MHz curved-array transducer. A specially designed fine needle was used for EUS-guided biopsy of submucosal or extrinsic lesions. Results: Surgery was performed in 19 of 48 patients with esophageal cancer and 60 of 74 patients with gastric cancer. The accuracy in the assessment of the infiltration depth of esophageal cancer and in the determination of lymph node involvement was 84% and 88%, respectively. In gastric cancer the tumor infiltration depth was assessed correctly in only 65% of the patients. The identification of early gastric cancer proved to be a major problem. The accuracy in the detection of lymph node involvement was 73%. Obstructing tumors were examined in 17 patients with carcinoma of the esophagus or the gastric cardia. The accuracy of EUS in determining the T-stage and the N-stage of stenotic tumors was 88% and 86%, respectively. Endosonography-guided needle biopsy was successfully performed in all 40 patients. Histologic analysis revealed malignancy in 50% of the patients. Only two biopsy specimens contained nonrepresentative material (accuracy: 95%). No complications were observed related to the procedure. Conclusions: EUS with a curved-array transducer provides high accuracy rates in staging of esophageal carcinoma. Evaluation of gastric cancer with this technique appears to be more difficult than with radial transducers. A major advantage of the linear transducer is the ability to perform EUS-guided biopsies of submucosal or extamural lesions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 11 (1997), S. 758 -761 
    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
    Library Location Call Number Volume/Issue/Year Availability
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