S. Oka

Publications210
h-index30
Citations4,299
Highly Influential Citations138
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Advantage of endoscopic submucosal dissection compared with EMR for early gastric cancer.
BACKGROUND In EMR of early gastric cancer (EGC), en bloc resection reduces the risk of residual cancer. Endoscopic submucosal dissection (ESD) now allows en bloc resection of large EGCs. OBJECTIVE… Expand
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Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2016 for the treatment of colorectal cancer
Japanese mortality due to colorectal cancer is on the rise, surpassing 49,000 in 2015. Many new treatment methods have been developed during recent decades. The Japanese Society for Cancer of the… Expand
  • 617
  • 23
Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2019 for the treatment of colorectal cancer
The number of deaths from colorectal cancer in Japan continues to increase. Colorectal cancer deaths exceeded 50,000 in 2016. In the 2019 edition, revision of all aspects of treatments was performed,… Expand
  • 157
  • 15
Local Recurrence After Endoscopic Resection for Large Colorectal Neoplasia: A Multicenter Prospective Study in Japan
OBJECTIVES:Conventional endoscopic resection (CER) is a widely accepted treatment for early colorectal neoplasia; however, large colorectal neoplasias remain problematic, as they necessitate… Expand
  • 162
  • 10
Colorectal endoscopic submucosal dissection: present status and future perspective, including its differentiation from endoscopic mucosal resection
Endoscopic submucosal dissection (ESD) allows en bloc resection of a lesion, irrespective of the size of the lesion. ESD has been established as a standard method for the endoscopic ablation of… Expand
  • 211
  • 9
Narrow‐band imaging (NBI) magnifying endoscopic classification of colorectal tumors proposed by the Japan NBI Expert Team
Many clinical studies on narrow‐band imaging (NBI) magnifying endoscopy classifications advocated so far in Japan (Sano, Hiroshima, Showa, and Jikei classifications) have reported the usefulness of… Expand
  • 193
  • 4
THERAPEUTIC STRATEGY FOR COLORECTAL LATERALLY SPREADING TUMOR
Most colorectal tumors larger than 20 mm in diameter are called laterally spreading tumors (LST), most of which are adenomatous lesions. Laterally spreading tumors are classified into two types… Expand
  • 73
  • 4
Endoscopic submucosal dissection for residual/local recurrence of early gastric cancer after endoscopic mucosal resection.
BACKGROUND AND STUDY AIMS Endoscopic mucosal resection (EMR) is a widely accepted treatment for early gastric cancer; however, incomplete resection with residual local disease and recurrences… Expand
  • 101
  • 4
Predictors of incomplete resection and perforation associated with endoscopic submucosal dissection for colorectal tumors.
BACKGROUND AND OBJECTIVE Colorectal endoscopic submucosal dissection (ESD) is technically challenging. Our aim was to identify predictors of incomplete resection and perforation in colorectal ESD. … Expand
  • 87
  • 4
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Comparison of detectability of small-bowel lesions between capsule endoscopy and double-balloon endoscopy for patients with suspected small-bowel disease.
BACKGROUND There are many reports of the usefulness of capsule endoscopy (CE) or double-balloon endoscopy (DBE) for the detection of small-bowel disease. However, there are few reports that compared… Expand
  • 95
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