Adenocarcinoma in Solitary Large Hyperplastic Polyp Diagnosed by Magnifying Colonoscope

Tonooka, Toru; Sano, Yasushi; Fujii, Takeshi; Kato, Shigeharu; Yoshino, Takayuki; Fu, Kuang‐I; Hironaka, Shuichi; Ochiai, Atsushi; Yoshida, Shigeaki

doi:10.1007/s10350-004-6434-3

Cited by 18 publications

(10 citation statements)

References 22 publications

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“…We routinely use a magnifying colonoscope because the insertion technique and manipulation are similar to those for an ordinary colonoscope [8]. In a prospective study, Konishi and colleagues reported that insertion of a magnifying colonoscope into the cecum was achieved successfully in 97% of cases, and that there were no significant differences in the average time taken to reach the cecum or the average total procedure time [9].…”

Section: Magnifying Chromoendoscopymentioning

confidence: 99%

NBI and NBI Combined with Magnifying Colonoscopy

Iwatate¹,

Ikumoto²,

Hattori³

et al. 2012

Diagnostic and Therapeutic Endoscopy

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Although magnifying chromoendoscopy had been a reliable diagnostic tool, narrow-band imaging (NBI) has been developed in Japan since 1999 and has now replaced the major role of chromoendoscopy because of its convenience and simplicity. In this paper, we principally describe the efficacy of magnifying chromoendoscopy and magnifying colonoscopy with NBI for detection, histological prediction, estimation of the depth of early colorectal cancer, and future prospects. Although some meta-analyses have concluded that NBI is not superior to white light imaging for detection of adenomatous polyps in screening colonoscopy, NBI with magnification colonoscopy is useful for histological prediction, or for estimating the depth of invasion. To standardize these diagnostic strategies, we will focus on the NBI International Colorectal Endoscopic (NICE) classification proposed for use by endoscopists with or without a magnifying endoscope. However, more prospective research is needed to prove that this classification can be applied with satisfactory availability, feasibility, and reliability. In the future, NBI might contribute to the evaluation of real-time histological prediction during colonoscopy, which has substantial benefits for both reducing the risk of polypectomy and saving the cost of histological evaluation by resecting and discarding diminutive adenomatous polyps (resect and discard strategy).

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Section: Magnifying Chromoendoscopymentioning

confidence: 99%

NBI and NBI Combined with Magnifying Colonoscopy

Iwatate¹,

Ikumoto²,

Hattori³

et al. 2012

Diagnostic and Therapeutic Endoscopy

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“…4b). However, MC vessels are recognized in some hyperplastic polyps such as large hyperplastic polyps 13,15 and hyperplastic polyps with serrated adenomatous change 5 …”

Section: Magnifying Observation Of Microvascular Architecture Using Tmentioning

confidence: 99%

Magnifying Observation of Microvascular Architecture of Colorectal Lesions Using a Narrow‐band Imaging System

Sano

Horimatsu

et al. 2006

Digestive Endoscopy

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107

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We reviewed the magnifying observation of the microvascular architecture of colorectal lesions and discuss the utility of the detailed observation of the microvascular architecture for differential diagnosis during narrow-band imaging (NBI) colonoscopy. Angiogenesis is critical to the transition of premalignant lesions in a hyperproliferative state to the malignant phenotype. Therefore, diagnosis based on angiogenic or vascular morphologic changes might be ideal for early detection or diagnosis of neoplasms. In this review, we propose the term 'meshed capillary' for the distinction between non-neoplastic and neoplastic lesions and the capillary classification 'capillary pattern' for the differential diagnosis of colorectal lesions. We believe that the combined use of NBI optical chromoendoscopy and real chromoendoscopy decreases the time and cost of screening colonoscopy. To assess the feasibility and efficacy of using the NBI system, further studies are required for colorectal lesions and other lesions of the gastrointestinal tract.

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“…Some reports currently describe large HPs as occurring on the right-side 3 in association with synchronous colorectal cancer (CRC), and showing a malignant potential. [4][5][6] However, a few investigators have reported that intermediate size HPs (≥ 6 mm) also have neoplastic potential. 7,8 It is accepted as beyond doubt that intermediate size HPs become large HPs (≥ 10 mm) in time and should not be lumped together with the common variety of diminutive HPs.…”

Section: Introductionmentioning

confidence: 99%