TY - JOUR
T1 - Forward-viewing radial-array echoendoscope for staging of colon cancer beyond the rectum
AU - Kongkam, Pradermchai
AU - Linlawan, Sittikorn
AU - Aniwan, Satimai
AU - Lakananurak, Narisorn
AU - Khemnark, Suparat
AU - Sahakitrungruang, Chucheep
AU - Pattanaarun, Jirawat
AU - Khomvilai, Supakij
AU - Wisedopas, Naruemon
AU - Ridtitid, Wiriyaporn
AU - Bhutani, Manoop S.
AU - Kullavanijaya, Pinit
AU - Rerknimitr, Rungsun
PY - 2014/3/14
Y1 - 2014/3/14
N2 - AIM: To evaluate feasibility of the novel forward-viewing radial-array echoendoscope for staging of colon cancer beyond rectum as the first series. METHODS: A retrospective study with prospectively entered database. From March 2012 to February 2013, a total of 21 patients (11 men) (mean age 64.2 years) with colon cancer beyond the rectum were recruited. The novel forward-viewing radial-array echoendoscope was used for ultrasonographic staging of colon cancer beyond rectum. Ultrasonographic T and N staging were recorded when surgical pathology was used as a gold standard. RESULTS: The mean time to reach the lesion and the mean time to complete the procedure were 3.5 and 7.1 min, respectively. The echoendoscope passed through the lesions in 13 patients (61.9%) and reached the cecum in 10 of 13 patients (76.9%). No adverse events were found. The lesions were located in the cecum (n = 2), ascending colon (n = 1), transverse colon (n = 2), descending colon (n = 2), and sigmoid colon (n = 14). The accuracy rate for T1 (n = 3), T2 (n = 4), T3 (n = 13) and T4 (n = 1) were 100%, 60.0%, 84.6% and 100%, respectively. The overall accuracy rates for the T and N staging of colon cancer were 81.0% and 52.4%, respectively. The accuracy rates among traversable lesions (n = 13) and obstructive lesions (n = 8) were 61.5% and 100%, respectively. endoscopic ultrasound and computed tomography had overall accuracy rates of 81.0% and 68.4%, respectively. CONCLUSION: The echoendoscope is a feasible staging tool for colon cancer beyond rectum. However, accuracy of the echoendoscope needs to be verified by larger systematic studies.
AB - AIM: To evaluate feasibility of the novel forward-viewing radial-array echoendoscope for staging of colon cancer beyond rectum as the first series. METHODS: A retrospective study with prospectively entered database. From March 2012 to February 2013, a total of 21 patients (11 men) (mean age 64.2 years) with colon cancer beyond the rectum were recruited. The novel forward-viewing radial-array echoendoscope was used for ultrasonographic staging of colon cancer beyond rectum. Ultrasonographic T and N staging were recorded when surgical pathology was used as a gold standard. RESULTS: The mean time to reach the lesion and the mean time to complete the procedure were 3.5 and 7.1 min, respectively. The echoendoscope passed through the lesions in 13 patients (61.9%) and reached the cecum in 10 of 13 patients (76.9%). No adverse events were found. The lesions were located in the cecum (n = 2), ascending colon (n = 1), transverse colon (n = 2), descending colon (n = 2), and sigmoid colon (n = 14). The accuracy rate for T1 (n = 3), T2 (n = 4), T3 (n = 13) and T4 (n = 1) were 100%, 60.0%, 84.6% and 100%, respectively. The overall accuracy rates for the T and N staging of colon cancer were 81.0% and 52.4%, respectively. The accuracy rates among traversable lesions (n = 13) and obstructive lesions (n = 8) were 61.5% and 100%, respectively. endoscopic ultrasound and computed tomography had overall accuracy rates of 81.0% and 68.4%, respectively. CONCLUSION: The echoendoscope is a feasible staging tool for colon cancer beyond rectum. However, accuracy of the echoendoscope needs to be verified by larger systematic studies.
KW - Colon
KW - Colon cancer
KW - Colonoscopy
KW - Endoscopic ultrasound
KW - Forward-viewing
KW - Neoadjuvan therapy
KW - Neoplasm
KW - Staging
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U2 - 10.3748/wjg.v20.i10.2681
DO - 10.3748/wjg.v20.i10.2681
M3 - Article
C2 - 24627604
AN - SCOPUS:84896897111
SN - 1007-9327
VL - 20
SP - 2681
EP - 2687
JO - World journal of gastroenterology
JF - World journal of gastroenterology
IS - 10
ER -