Chromoendoscopy

Gastrointestinal Endoscopy

Volumn 66, Issue 4, 2007, Pages 639-649

  Wong Kee Song, Louis Michel ^a   Adler, Douglas G ^a   Chand, Bipan ^a   Conway, Jason D ^a   Croffie, Joseph M B ^a   DiSario, James A ^a   Mishkin, Daniel S ^a   Shah, Raj J ^a   Somogyi, Lehel ^a   Tierney, William M ^a   Petersen, Bret T ^a  

^a NONE

Author keywords

[No Author keywords available]

Indexed keywords

ACETIC ACID; CONGO RED; CRYSTAL VIOLET; INDIGO CARMINE; LUGOL; METHYLENE BLUE; PHENOLSULFONPHTHALEIN; TOLONIUM CHLORIDE;

ARTICLE; BARRETT ESOPHAGUS; CANCER DIAGNOSIS; CATHETER; CHROMOENDOSCOPY; COLORECTAL TUMOR; ESOPHAGUS CANCER; EVIDENCE BASED MEDICINE; HEALTH CARE COST; HUMAN; MEDICAL LITERATURE; MEDLINE; PRIORITY JOURNAL; SOCIOECONOMICS; STAINING; STOMACH CANCER; ULCERATIVE COLITIS;

COLORING AGENTS; ENDOSCOPY, GASTROINTESTINAL; GASTROINTESTINAL DISEASES; HUMANS; INJECTIONS; INTESTINAL MUCOSA; REPRODUCIBILITY OF RESULTS;

EID: 34648852340     PISSN: 00165107     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.gie.2007.05.029     Document Type: Article

References (107)

1. Ginsberg G.G., Barkun A.N., Bosco J.J., et al. Endoscopic tattooing: February 2002. Gastrointest Endosc 55 (2002) 811-814
2. Mitooka H., Fujimori T., Maeda S., et al. Minute flat depressed neoplastic lesions of the colon detected by contrast chromoscopy using an indigo carmine capsule. Gastrointest Endosc 41 (1995) 453-459
3. Carroll R.E. Colon preparation for magnification endoscopy: a rapid novel approach. Endoscopy 36 (2004) 609-611
4. Dinis-Ribeiro M., da Costa-Pereira A., Lopes C., et al. Magnification chromoendoscopy for the diagnosis of gastric intestinal metaplasia and dysplasia. Gastrointest Endosc 57 (2003) 498-504
5. Meining A., Rosch T., Kiesslich R., et al. Inter- and intra-observer variability of magnification chromoendoscopy for detecting specialized intestinal metaplasia at the gastroesophageal junction. Endoscopy 36 (2004) 160-164
6. Huang Q., Fukami N., Kashida H., et al. Interobserver and intra-observer consistency in the endoscopic assessment of colonic pit patterns. Gastrointest Endosc 60 (2004) 520-526
7. Kudo S., Tamura S., Nakajima T., et al. Diagnosis of colorectal tumorous lesions by magnifying endoscopy. Gastrointest Endosc 44 (1996) 8-14
8. Canto M.I., Setrakian S., Petras R.E., et al. Methylene blue selectively stains intestinal metaplasia in Barrett's esophagus. Gastrointest Endosc 44 (1996) 1-7
9. Canto M.I., Setrakian S., Willis J.E., et al. Methylene blue staining of dysplastic and nondysplastic Barrett's esophagus: an in vivo and ex vivo study. Endoscopy 33 (2001) 391-400
10. Sharma P., Weston A.P., Topalovski M., et al. Magnification chromoendoscopy for the detection of intestinal metaplasia and dysplasia in Barrett's oesophagus. Gut 52 (2003) 24-27
11. Endo T., Awakawa T., Takahashi H., et al. Classification of Barrett's epithelium by magnifying endoscopy. Gastrointest Endosc 55 (2002) 641-647
12. Guelrud M., and Ehrlich E.E. Endoscopic classification of Barrett's esophagus. Gastrointest Endosc 59 (2004) 58-65
13. Shiozaki H., Tahara H., Kobayashi K., et al. Endoscopic screening of early esophageal cancer with the Lugol dye method in patients with head and neck cancers. Cancer 66 (1990) 2068-2071
14. Tincani A.J., Brandalise N., Altemani A., et al. Diagnosis of superficial esophageal cancer and dysplasia using endoscopic screening with a 2% lugol dye solution in patients with head and neck cancer. Head Neck 22 (2000) 170-174
15. Muto M., Hironaka S., Nakane M., et al. Association of multiple Lugol-voiding lesions with synchronous and metachronous esophageal squamous cell carcinoma in patients with head and neck cancer. Gastrointest Endosc 56 (2002) 517-521
16. Hashimoto C.L., Iriya K., Baba E.R., et al. Lugol's dye spray chromoendoscopy establishes early diagnosis of esophageal cancer in patients with primary head and neck cancer. Am J Gastroenterol 100 (2005) 275-282
17. Yokoyama A., Ohmori T., Makuuchi H., et al. Successful screening for early esophageal cancer in alcoholics using endoscopy and mucosa iodine staining. Cancer 76 (1995) 928-934
18. Meyer V., Burtin P., Bour B., et al. Endoscopic detection of early esophageal cancer in a high-risk population: does Lugol staining improve videoendoscopy?. Gastrointest Endosc 45 (1997) 480-484
19. Fagundes R.B., de Barros S.G., Putten A.C., et al. Occult dysplasia is disclosed by Lugol chromoendoscopy in alcoholics at high risk for squamous cell carcinoma of the esophagus. Endoscopy 31 (1999) 281-285
20. Freitag C.P., Barros S.G., Kruel C.D., et al. Esophageal dysplasias are detected by endoscopy with Lugol in patients at risk for squamous cell carcinoma in southern Brazil. Dis Esophagus 12 (1999) 191-195
21. Dawsey S.M., Fleischer D.E., Wang G.Q., et al. Mucosal iodine staining improves endoscopic visualization of squamous dysplasia and squamous cell carcinoma of the esophagus in Linxian, China. Cancer 83 (1998) 220-231
22. Inoue H., Rey J.F., and Lightdale C. Lugol chromoendoscopy for esophageal squamous cell cancer. Endoscopy 33 (2001) 75-79
23. Fennerty M.B., Sampliner R.E., McGee D.L., et al. Intestinal metaplasia of the stomach: identification by a selective mucosal staining technique. Gastrointest Endosc 38 (1992) 696-698
24. Canto M.I. Chromoendoscopy and magnifying endoscopy for Barrett's esophagus. Clin Gastroenterol Hepatol 3 (2005) S12-S15
25. Dinis-Ribeiro M., da Costa-Pereira A., Lopes C., et al. Magnification chromoendoscopy for the diagnosis of gastric intestinal metaplasia and dysplasia. Gastrointest Endosc 57 (2003) 498-504
26. Kiesslich R., Fritsch J., Holtmann M., et al. Methylene blue-aided chromoendoscopy for the detection of intraepithelial neoplasia and colon cancer in ulcerative colitis. Gastroenterology 124 (2003) 880-888
27. Canto M.I., Setrakian S., Willis J., et al. Methylene blue-directed biopsies improve detection of intestinal metaplasia and dysplasia in Barrett's esophagus. Gastrointest Endosc 51 (2000) 560-568
28. Kiesslich R., Hahn M., Herrmann G., et al. Screening for specialized columnar epithelium with methylene blue: chromoendoscopy in patients with Barrett's esophagus and a normal control group. Gastrointest Endosc 53 (2001) 47-52
29. Ragunath K., Krasner N., Raman V.S., et al. A randomized, prospective cross-over trial comparing methylene blue-directed biopsy and conventional random biopsy for detecting intestinal metaplasia and dysplasia in Barrett's esophagus. Endoscopy 35 (2003) 998-1003
30. Yagi K., Nakamura A., and Sekine A. Accuracy of magnifying endoscopy with methylene blue in the diagnosis of specialized intestinal metaplasia and short-segment Barrett's esophagus in Japanese patients without Helicobacter pylori infection. Gastrointest Endosc 58 (2003) 189-195
31. Herlin P., Marnay J., Jacob J.H., et al. A study of the mechanism of the toluidine blue dye test. Endoscopy 15 (1983) 4-7
32. Epstein J.B., Feldman R., Dolor R.J., et al. The utility of tolonium chloride rinse in the diagnosis of recurrent or second primary cancers in patients with prior upper aerodigestive tract cancer. Head Neck 25 (2003) 911-921
33. Zhang L., Williams M., Poh C.F., et al. Toluidine blue staining identifies high-risk primary oral premalignant lesions with poor outcome. Cancer Res 65 (2005) 8017-8021
34. Hix W.R., and Wilson W.R. Toluidine blue staining of the esophagus: a useful adjunct in the panendoscopic evaluation of patients with squamous cell carcinoma of the head and neck. Arch Otolaryngol Head Neck Surg 113 (1987) 864-865
35. Seitz J.F., Monges G., Navarro P., et al. Endoscopic detection of dysplasia and subclinical cancer of the esophagus: results of a prospective study using toluidine blue vital staining in 100 patients with alcoholism and smoking. Gastroenterol Clin Biol 14 (1990) 15-21
36. Contini S., Consigli G.F., Di Lecce F., et al. Vital staining of oesophagus in patients with head and neck cancer: still a worthwhile procedure. Ital J Gastroenterol 23 (1991) 5-8
37. Takeo Y., Yoshida T., Shigemitu T., et al. Endoscopic mucosal resection for early esophageal cancer and esophageal dysplasia. Hepatogastroenterology 48 (2001) 453-457
38. Wakelin L.P.G., Adams A., Hunter C., et al. Interaction of crystal violet with nucleic acids. Biochemistry 20 (1981) 5779-5787
39. Amano Y., Kushiyama Y., Ishihara S., et al. Crystal violet chromoendoscopy with mucosal pit pattern diagnosis is useful for surveillance of short-segment Barrett's esophagus. Am J Gastroenterol 100 (2005) 21-26
40. Hurlstone D.P., Cross S.S., Adam I., et al. Endoscopic morphological anticipation of submucosal invasion in flat and depressed colorectal lesions: clinical implications and subtype analysis of the kudo type V pit pattern using high-magnification-chromoscopic colonoscopy. Colorectal Dis 6 (2004) 369-375
41. Tabuchi M., Sueoka N., and Fujimori T. Videoendoscopy with vital double dye staining (crystal violet and methylene blue) for detection of a minute focus of early stage adenocarcinoma in Barrett's esophagus: a case report. Gastrointest Endosc 54 (2001) 385-388
42. Amano Y., Komazawa Y., Ishimura N., et al. Two cases of superficial cancer in Barrett's esophagus detected by chromoendoscopy with crystal violet. Gastrointest Endosc 59 (2004) 143-146
43. Hurlstone D.P., Sanders D.S., Cross S.S., et al. Colonoscopic resection of lateral spreading tumours: a prospective analysis of endoscopic mucosal resection. Gut 53 (2004) 1334-1339
44. Konishi K., Kaneko K., Kurahashi T., et al. A comparison of magnifying and nonmagnifying colonoscopy for diagnosis of colorectal polyps: a prospective study. Gastrointest Endosc 57 (2002) 48-53
45. Fu K.I., Sano Y., Kato S., et al. Chromoendoscopy using indigo carmine dye spraying with magnifying observation is the most reliable method for differential diagnosis between non-neoplastic and neoplastic colorectal lesions: a prospective study. Endoscopy 36 (2004) 1089-1093
46. Donahue P.E., Yoshida J., Richter H.M., et al. Can the use of an endoscopic Congo red test decrease the incidence of incomplete proximal gastric vagotomy?. Gastrointest Endosc 33 (1987) 427-431
47. Schneider II T.A., and Andrus C.H. The endoscopic Congo red test during proximal gastric vagotomy: an essential procedure. Surg Endosc 6 (1992) 16-17
48. Popiela T., Turczynowski W., Karcz D., et al. Long-term results of highly selective vagotomy in the treatment of duodenal ulcer patients using the intra-operative endoscopic congo red test to identify the parietal cell antrum-corpus borderline. Hepatogastroenterology 40 (1993) 267-271
49. Mann N.S., Mann S.K., and Rachut E. Heterotopic gastric tissue in the duodenal bulb. J Clin Gastroenterol 30 (2000) 303-306
50. Nakajima H., Munakata A., Sasaki Y., et al. pH profile of esophagus in patients with inlet patch of heterotopic gastric mucosa after tetragastrin stimulation: an endoscopic approach. Dig Dis Sci 38 (1993) 1915-1919
51. Iishi H., Tatsuta M., and Okuda S. Diagnosis of simultaneous multiple gastric cancers by the endoscopic Congo red-methylene blue test. Endoscopy 20 (1988) 78-82
52. Shaw D., Blair V., Framp A., et al. Chromoendoscopic surveillance in hereditary diffuse gastric cancer: an alternative to prophylactic gastrectomy?. Gut 54 (2005) 461-468
53. Azuma T., Kato T., Hirai M., et al. Diagnosis of Helicobacter pylori infection. J Gastroenterol Hepatol 11 (1996) 662-669
54. Kohli Y., Kato T., Ito S., et al. Helicobacter pylori and chronic atrophic gastritis. J Gastroenterol 29 (1994) 105-109
55. Tsuji H., Kohli Y., Fukumitsu S., et al. Helicobacter pylori-negative gastric and duodenal ulcers. J Gastroenterol 34 (1999) 455-460
56. Iseki K., Tatsuta M., Iishi H., et al. Helicobacter pylori infection in patients with early gastric cancer by the endoscopic phenol red test. Gut 42 (1998) 20-23
57. Guelrud M., Herrera I., Essenfeld H., et al. Enhanced magnification endoscopy: a new technique to identify specialized intestinal metaplasia in Barrett's esophagus. Gastrointest Endosc 53 (2001) 559-565
58. Katada C., Muto M., Manabe T., et al. Local recurrence of squamous-cell carcinoma of the esophagus after EMR. Gastrointest Endosc 61 (2005) 219-225
59. Gangarosa L.M., Halter S., and Mertz H. Methylene blue staining and endoscopic ultrasound evaluation of Barrett's esophagus with low-grade dysplasia. Dig Dis Sci 45 (2000) 225-229
60. Dave U., Shousha S., and Westaby D. Methylene blue staining: is it really useful in Barrett's esophagus?. Gastrointest Endosc 53 (2001) 333-335
61. Wo J.M., Ray M.B., Mayfield-Stokes S., et al. Comparison of methylene blue-directed biopsies and conventional biopsies in the detection of intestinal metaplasia and dysplasia in Barrett's esophagus: a preliminary study. Gastrointest Endosc 54 (2001) 294-301
62. Sharma P., Topalovski M., Mayo M.S., et al. Methylene blue chromoendoscopy for detection of short-segment Barrett's esophagus. Gastrointest Endosc 54 (2001) 289-293
63. Breyer H.P., Silva De Barros S.G., Maguilnik I., et al. Does methylene blue detect intestinal metaplasia in Barrett's esophagus?. Gastrointest Endosc 57 (2003) 505-509
64. Kouklakis G.S., Kountouras J., Dokas S.M., et al. Methylene blue chromoendoscopy for the detection of Barrett's esophagus in a Greek cohort. Endoscopy 35 (2003) 383-387
65. Egger K., Werner M., Meining A., et al. Biopsy surveillance is still necessary in patients with Barrett's oesophagus despite new endoscopic imaging techniques. Gut 52 (2003) 18-23
66. Duncan M.B., Horwhat J.D., Maydonovitch C.L., et al. Use of methylene blue for detection of specialized intestinal metaplasia in GERD patients presenting for screening upper endoscopy. Dig Dis Sci 50 (2005) 389-393
67. Gossner L., Pech O., May A., et al. Comparison of methylene blue-directed biopsies and four-quadrant biopsies in the detection of high-grade intraepithelial neoplasia and early cancer in Barrett's oesophagus. Dig Liver Dis 38 (2006) 724-729
68. Lim C.H., Rotimi O., Dexter S.P.L., et al. Randomized crossover study that used methylene blue or random 4-quadrant biopsy for the diagnosis of dysplasia in Barrett's esophagus. Gastrointest Endosc 64 (2006) 195-199
69. Stevens P.D., Lightdale C.J., Green P.H., et al. Combined magnification endoscopy with chromoendoscopy for the evaluation of Barrett's esophagus. Gastrointest Endosc 40 (1994) 747-749
70. Mayinger B., Oezturk Y., Stolte M., et al. Evaluation of sensitivity and inter- and intra-observer variability in the detection of intestinal metaplasia and dysplasia in Barrett's esophagus with enhanced magnification endoscopy. Scand J Gastroenterol 41 (2006) 349-356
71. Toyoda H., Rubio C., Befrits R., et al. Detection of intestinal metaplasia in distal esophagus and esophagogastric junction by enhanced-magnification endoscopy. Gastrointest Endosc 59 (2004) 15-21
72. Fortun P.J., Anagnostopoulos G.K., Kaye P., et al. Acetic acid-enhanced magnification endoscopy in the diagnosis of specialized intestinal metaplasia, dysplasia and early cancer in Barrett's oesophagus. Aliment Pharmacol Ther 23 (2006) 735-742
73. Reaud S., Croue A., and Boyer J. Diagnostic accuracy of magnifying chromoendoscopy with detection of intestinal metaplasia and dysplasia using acetic acid in Barrett's esophagus. Gastroenterol Clin Biol 30 (2006) 217-223
74. Hoffman A., Kiesslich R., Bender A., et al. Acetic acid-guided biopsies after magnifying endoscopy compared with random biopsies in the detection of Barrett's esophagus: a prospective randomized trial with crossover design. Gastrointest Endosc 64 (2006) 1-8
75. Ferguson D.D., DeVault K.R., Krishna M., et al. Enhanced magnification-directed biopsies do not increase the detection of intestinal metaplasia in patients with GERD. Am J Gastroenterol 101 (2006) 1611-1616
76. Guelrud M., and Herrera I. Acetic acid improves identification of remnant islands of Barrett's epithelium after endoscopic therapy. Gastrointest Endosc 47 (1998) 512-515
77. Tatsuta M., Iishi H., Ichii M., et al. Chromoendoscopic observations on extension and development of fundal gastritis and intestinal metaplasia. Gastroenterology 88 (1985) 70-74
78. Morales T.G., Bhattacharyya A., and Camargo E. Methylene blue staining for intestinal metaplasia of the gastric cardia with follow-up for dysplasia. Gastrointest Endosc 48 (1998) 26-31
79. Asaka M., Sugiyama T., Nobuta A., et al. Atrophic gastritis and intestinal metaplasia in Japan: results of a large multicenter study. Helicobacter 6 (2001) 294-299
80. Toth E., Sjolund K., Fork F.T., et al. Chronic atrophic fundic gastritis diagnosed by a modified Congo red test. Endoscopy 27 (1995) 654-658
81. Toth E., Sjolund K., Thorsson O., et al. Evaluation of gastric acid secretion at endoscopy with a modified Congo red test. Gastrointest Endosc 56 (2002) 254-259
82. Rembacken B.J., Fujii T., Cairns A., et al. Flat and depressed colonic neoplasms: a prospective study of 1000 colonoscopies in the UK. Lancet 355 (2000) 1211-1214
83. Lee J.H., Kim J.W., Cho Y.K., et al. Detection of colorectal adenomas by routine chromoendoscopy with indigocarmine. Am J Gastroenterol 98 (2003) 1284-1288
84. Brooker J.C., Saunders B.P., Shah S.G., et al. Total colonic dye-spray increases the detection of diminutive adenomas during routine colonoscopy: a randomized controlled trial. Gastrointest Endosc 56 (2002) 333-338
85. Le Rhun M., Coron E., Parlier D., et al. High resolution colonoscopy with chromoscopy versus standard colonoscopy for the detection of colonic neoplasia: a randomized study. Clin Gastroenterol Hepatol 4 (2006) 349-354
86. Hurlstone D.P., Cross S.S., Slater R., et al. Detecting diminutive colorectal lesions at colonoscopy: a randomised controlled trial of pan-colonic versus targeted chromoscopy. Gut 53 (2004) 376-380
87. Axelrad A.M., Fleischer D.E., Geller A.J., et al. High-resolution chromoendoscopy for the diagnosis of diminutive colon polyps: implications for colon cancer screening. Gastroenterology 110 (1996) 1253-1258
88. Tung S.Y., Wu C.S., and Su M.Y. Magnifying colonoscopy in differentiating neoplastic from nonneoplastic colorectal lesions. Am J Gastroenterol 96 (2001) 2628-2632
89. Eisen G.M., Kim C.Y., Fleischer D.E., et al. High-resolution chromoendoscopy for classifying colonic polyps: a multicenter study. Gastrointest Endosc 55 (2002) 687-694
90. Su M.Y., Ho Y.P., Chen P.C., et al. Magnifying endoscopy with indigo carmine contrast for differential diagnosis of neoplastic and nonneoplastic colonic polyps. Dig Dis Sci 49 (2004) 1123-1127
91. Apel D., Jakobs R., Schilling D., et al. Accuracy of high-resolution chromoendoscopy in prediction of histologic findings in diminutive lesions of the rectosigmoid. Gastrointest Endosc 63 (2006) 824-828
92. Fu K.I., Sano Y., Kato S., et al. Chromoendoscopy using indigo carmine dye spraying with magnifying observation is the most reliable method for differential diagnosis between non-neoplastic and neoplastic colorectal lesions: a prospective study. Endoscopy 36 (2004) 1089-1093
93. Hurlstone D.P., Karajeh M., Sanders D.S., et al. Rectal aberrant crypt foci identified using high-magnification-chromoscopic colonoscopy: biomarkers for flat and depressed neoplasia. Am J Gastroenterol 100 (2005) 1283-1289
94. Lecomte T., Cellier C., Meatchi T., et al. Chromoendoscopic colonoscopy for detecting preneoplastic lesions in hereditary nonpolyposis colorectal cancer syndrome. Clin Gastroenterol Hepatol 3 (2005) 897-902
95. Hurlstone D.P., Karajeh M., Cross S.S., et al. The role of high-magnification-chromoscopic colonoscopy in hereditary nonpolyposis colorectal cancer screening: a prospective "back-to-back" endoscopic study. Am J Gastroenterol 100 (2005) 2167-2173
96. Hurlstone D.P., Cross S.S., Brown S., et al. Prospective evaluation of high-magnification chromoscopic colonoscopy in predicting completeness of EMR. Gastrointest Endosc 59 (2004) 642-650
97. Hurlstone D.P., Brown S., Cross S.S., et al. High magnification chromoscopic colonoscopy or high frequency 20 MHz mini probe endoscopic ultrasound staging for early colorectal neoplasia: a comparative prospective analysis. Gut 54 (2005) 1585-1589
98. Matsumoto T., Nakamura S., Jo Y., et al. Chromoscopy might improve diagnostic accuracy in cancer surveillance for ulcerative colitis. Am J Gastroenterol 98 (2003) 1827-1833
99. Rutter M.D., Saunders B.P., Schofield G., et al. Pancolonic indigo carmine dye spraying for the detection of dysplasia in ulcerative colitis. Gut 53 (2004) 256-260
100. Sada M., Igarashi M., Yoshizawa S., et al. Dye spraying and magnifying endoscopy for dysplasia and cancer surveillance in ulcerative colitis. Dis Colon Rectum 47 (2004) 1816-1823
101. Hurlstone D.P., Sanders D.S., Lobo A.J., et al. Indigo carmine-assisted high-magnification chromoscopic colonoscopy for the detection and characterisation of intraepithelial neoplasia in ulcerative colitis: a prospective evaluation. Endoscopy 37 (2005) 1186-1192
102. Hurlstone D.P. Further validation of high-magnification-chromoscopic colonoscopy for the detection of intraepithelial neoplasia and colon cancer in ulcerative colitis. Gastroenterology 126 (2004) 376-378
103. Kondo H., Fukuda H., Ono T., et al. Sodium thiosulfate solution spray for relief of irritation caused by Lugol's stain in chromoendoscopy. Gastrointest Endosc 53 (2001) 199-202
104. Thuler F.P., de Paulo G.A., and Ferrari A.P. Chemical esophagitis after chromoendoscopy with Lugol's solution for esophageal cancer: case report. Gastrointest Endosc 59 (2004) 925-926
105. Sreedharan A., Rembacken B.J., and Rotimi O. Acute toxic gastric mucosal damage induced by Lugol's iodine spray during chromoendoscopy. Gut 54 (2005) 886-887
106. Olliver J.R., Wild C.P., Sahay P., et al. Chromoendoscopy with methylene blue and associated DNA damage in Barrett's oesophagus. Lancet 362 (2003) 373-374
107. Kara M.A., Peters F.P., Rosmolen W.D., et al. High-resolution endoscopy plus chromoendoscopy or narrow-band imaging in Barrett's esophagus: a prospective randomized crossover study. Endoscopy 37 (2005) 929-936