scholarly journals A semi-pedunculated mucosal gastric cancer of 0-I type with remarkable lymph follicle formation in the mucosal muscle layer

2001 ◽  
Vol 59 (2) ◽  
pp. 86-87
Author(s):  
Naomi Kakushima ◽  
Mitsuhiro Fujishiro ◽  
Naohisa Yahagi ◽  
Shotaro Enomoto ◽  
Ayako Tateishi ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Muscle Layer ◽  
Lymph Follicle ◽  
Mucosal Gastric Cancer

Clinical benefit of the multibending endoscope for gastric endoscopic submucosal dissection: a randomized controlled trial

Endoscopy ◽  
2020 ◽  
Author(s):  
Koichi Hamada ◽  
Yoshinori Horikawa ◽  
Yoshiki Shiwa ◽  
Kae Techigawara ◽  
Takayuki Nagahashi ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Endoscopic Submucosal Dissection ◽  
Treatment Guidelines ◽  
Controlled Trial ◽  
Complete Removal ◽  
Muscle Layer ◽  
Gastrointestinal Neoplasms ◽  
Procedure Time ◽  
Operator Experience ◽  
Submucosal Dissection

Abstract Background Endoscopic submucosal dissection (ESD) is a technically difficult and time-consuming procedure. We aimed to investigate the efficacy and safety of ESD using a multibending endoscope to treat superficial gastrointestinal neoplasms. Methods Patients with a single early gastric cancer who met the absolute or expanded indications for ESD according to the Japanese gastric cancer treatment guidelines were enrolled and randomly assigned to undergo ESD using a conventional endoscope (C-ESD) or a multibending endoscope (M-ESD). Randomization was stratified by ESD operator experience and tumor location. The primary outcome was ESD procedure time, calculated as the time from the start of submucosal injection to complete removal of the tumor. Results 60 patients were analyzed (30 C-ESD, 30 M-ESD). The mean (standard deviation [SD]) ESD procedure times for M-ESD and C-ESD were 34.6 (SD 17.2) and 47.2 (SD 26.7) minutes, respectively (P = 0.03). Muscle layer damage occurred significantly less frequently with M-ESD (0.2 [SD 0.7] vs. 0.7 [SD 1.0]; P = 0.04). There were no significant differences between the two techniques in procedure time or damage to muscle layers for tumors located in the lower third of the stomach. Conclusions ESD procedure time was significantly shorter with the multibending endoscope and fewer muscles were damaged. We recommend multibending endoscopy for ESD in the upper and middle thirds of the stomach to reduce procedure time and incidence of complications.

Mucin phenotype and narrow-band imaging with magnifying endoscopy for differentiated-type mucosal gastric cancer

2011 ◽  
Vol 46 (9) ◽  
pp. 1064-1070 ◽  
Author(s):  
Masaaki Kobayashi ◽  
Manabu Takeuchi ◽  
Yoichi Ajioka ◽  
Satoru Hashimoto ◽  
Akito Sato ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Mucin Phenotype ◽  
Mucosal Gastric Cancer

scholarly journals nPTD Classification: An Updated Classification of Gastric Cancer Location for Function Preserving Gastrectomy Based on Physiological Lymphatic Flow

2021 ◽  
Author(s):  
Shinichi Kinami ◽  
Naohiko Nakamura ◽  
Tomoharu Miyashita ◽  
Hidekazu Kitakata ◽  
Sachio Fushida ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Proximal Gastrectomy ◽  
Flow Distribution ◽  
Muscle Layer ◽  
Tumor Location ◽  
Lymphatic Flow ◽  
Greater Curvature ◽  
Gastric Cancer Patients ◽  
The Right ◽  
Lesser Curvature

Abstract Background: The correlation between tumor location and lymphatic flow distribution in gastric cancer has been previously reported, and PTD (Proximal – Transitional – Distal) classification, proposed. We updated and developed the nPTD classification.Method: We retrospectively studied gastric cancer patients who underwent the dye method sentinel node biopsy from 1993 to 2020. The inclusion criteria were a single lesion type 0 cancer of ≤5 cm in the long axis, clinically node-negative, and invasion within the proper muscle layer pathologically. In this study, the distribution of dyed lymphatic flow was evaluated for each occupied area of the tumor.Results: We selected 416. The tumors located watershed of the right and left gastroepiploic artery near greater curvature had extensive lymphatic flow; therefore, a newly circular region with a diameter of 5 cm is set on the watershed on greater curvature between P and T zone as the ‘n’ zone. In addition, for cancers located in the lesser P curvature, lymphatic flow to the greater curvature was not observed. Therefore, the P zone is divided into two: the lesser curvature side (PL) and the greater curvature side (PG).Conclusions: The advantage of the nPTD classification is that it provides not only proper nodal dissection, but also adequate function-preserving gastrectomy. If the tumor is localized within the PL, the proximal gastrectomy resection area can be further reduced. In contrast, for cancers located in the ‘n’ zone, near-total gastrectomy is required because of the extensive lymphatic flow.

scholarly journals A Clicopathological Study of Lymph Node Positive Intra Mucosal Gastric Cancer.

1995 ◽  
Vol 28 (4) ◽  
pp. 766-771
Author(s):  
Tatsuhiko Hayashi ◽  
Atsushi Nashimoto ◽  
Otsuo Tanaka ◽  
Juei Sasaki
Keyword(s):  
Gastric Cancer ◽  
Lymph Node ◽  
Node Positive ◽  
Mucosal Gastric Cancer ◽  
Lymph Node Positive

scholarly journals nPTD classification: an updated classification of gastric cancer location for function preserving gastrectomy based on physiological lymphatic flow

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Shinichi Kinami ◽  
Naohiko Nakamura ◽  
Tomoharu Miyashita ◽  
Hidekazu Kitakata ◽  
Sachio Fushida ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Proximal Gastrectomy ◽  
Flow Distribution ◽  
Muscle Layer ◽  
Tumor Location ◽  
Lymphatic Flow ◽  
Greater Curvature ◽  
Gastric Cancer Patients ◽  
The Right ◽  
Lesser Curvature

Abstract Background The correlation between tumor location and lymphatic flow distribution in gastric cancer has been previously reported, and PTD (Proximal – Transitional – Distal) classification was proposed. Our group updated and developed the nPTD classification. Method We retrospectively studied gastric cancer patients who underwent the dye method sentinel node biopsy from 1993 to 2020. The inclusion criteria were a single lesion type 0 cancer of ≤5 cm in the long axis, clinically node-negative, and invasion within the proper muscle layer pathologically. In this study, the distribution of dyed lymphatic flow was evaluated for each occupied area of the tumor. Results We included 416 patients in this study. The tumors located in the watershed of the right and left gastroepiploic arteries near greater curvature had extensive lymphatic flow; therefore, a newly circular region with a diameter of 5 cm is set on the watershed of the greater curvature between P and T zone as the ‘n’ zone. In addition, for cancers located in the lesser P curvature, lymphatic flow to the greater curvature was not observed. Therefore, the P zone was divided into two: the lesser curvature side (PL) and the greater curvature side (PG). Conclusions The advantage of the nPTD classification is that it provides not only proper nodal dissection but also adequate function-preserving gastrectomy. If the tumor is localized within the PL, the proximal gastrectomy resection area can be further reduced. In contrast, for cancers located in the ‘n’ zone, near-total gastrectomy is required because of the extensive lymphatic flow.

Lymph Node Metastasis in Mucosal Gastric Cancer

2017 ◽  
Vol 265 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Seung-Young Oh ◽  
Kyung-Goo Lee ◽  
Yun-Suhk Suh ◽  
Min A. Kim ◽  
Seong-Ho Kong ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Lymph Node ◽  
Lymph Node Metastasis ◽  
Node Metastasis ◽  
Mucosal Gastric Cancer
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