SPECIAL ARTICLE
Japane gastric cancer treatment guidelines 2010(ver.3)
Japane Gastric Cancer Association
Published online:14May 2011
ÓThe International Gastric Cancer Association and The Japane Gastric Cancer Association 2011
The description of tumor status (T/N/M and stage)in this guideline is bad on the 3rd English edition of the Japa-ne Classification of Gastric Carcinoma [1]which is identical to that in the 7th edition of the International Union Against Cancer (UICC)/TNM.1Treatments
1.1Algorithm of standard treatments to be recommended in clinical practice The algorithm is shown on the following page.1.2Investigational treatments
The following treatments show promi but are as yet to be established as standard.They should be prospectively evaluated in appropriate clinical rearch ttings.Patient connt for investigational treatments should be sought and the rationale behind them given (Refer to the Sect.6‘‘Commentary on investigational treatments ’’for details).The following constitute investigational treatments:
–Endoscopic submucosal disction under expanded
criteria
–Laparoscopic gastrectomy –Local tumor rection
–Neoadjuvant chemotherapy
–Adjuvant chemotherapy using agents other than S-1–Neoadjuvant chemoradiotherapy –Adjuvant chemoradiotherapy –Debulking surgery.
2Surgery
2.1Types and definitions of gastric surgery 2.1.1Curative surgery
2.1.1.1Standard gastrectomy Standard gastrectomy is the principal surgical procedure performed with curative intent.It involves rection of at least two-thirds of the stomach with a D2lymph node disction.
2.1.1.2Non-standard gastrectomy In non-standard gas-trectomy,the extent of gastric rection and/o
r lymphade-nectomy is altered according to the tumor characteristics.2.1.1.2.1Modified surgery The extent of gastric rec-tion and/or lymphadenectomy is reduced compared to standard surgery.
2.1.1.2.2Extended surgery (1)Gastrectomy with com-bined rection of adjacent involved organs.(2)Gastrec-tomy with extended lymphadenectomy exceeding D2.2.1.2Non-curative surgery
2.1.2.1Palliative surgery Urgent prentations with symptoms of bleeding or obstruction may develop in patients with advanced gastric cancer with unrectable
The online version of the prefatory article referred to in this article can be found under doi:10.1007/s10120-011-0040-6.English edition editors:Takeshi Sano (&),Yasuhiro Kodera.e-mail:takeshi.jp
Japane Gastric Cancer Association (&)
Association Office,First Department of Surgery,
Kyoto Prefectural University of Medicine,Kawaramachi,Kamigyo-ku,Kyoto 602-0841,Japan e-mail:jgca@koto.kpu-m.ac.jp
Gastric Cancer (2011)14:113–123DOI 10.1007/s10120-011-0042-4
metastas.Palliative surgery to relieve symptoms is recommended as an option for stage IV gastric cancer,provided that the patient is fit.Palliative gastrectomy or gastrojejunostomy is lected depending on the rect-ability of the primary tumor and/or surgical risks.Stomach-partitioning gastrojejunostomy has been reported to result in superior function compared to simple gastrojejunostomy [2].
2.1.2.2Reduction surgery The role of gastrectomy is unclear in patients with advanced gastric cancer with unrectable metastatic dia in the abnce of urgent symptoms such as bleeding or obstruction.Reduction sur-gery aims to prolong survival or to delay the ont of symptoms by reducing tumor volume.To date there is no evidence demonstrating the benefit of reduction surgery for gastric cancer and it should only be considered in an investigational tting.A randomized controlled trial to explore this issue is underway as an international cooper-ative trial (REGATTA,JCOG0705/KGCA01)[3].
2.2Extent of gastric rection 2.2.1Gastric rections
Gastric rections for gastric cancer are listed below in the order of the stomach volume to be rected.–Total gastrectomy –Distal gastrectomy
–Pylorus-prerving gastrectomy (PPG)–Proximal gastrectomy –Segmental gastrectomy –Local rection
–
Non-rectional surgery (bypass surgery,gastrostomy,jejunostomy).
2.2.2Determination of gastric rection
2.2.2.1Rection margin A sufficient rection margin should be ensured when determining the rection line in
cT1cT2/T3/T4a M0M1
cT1a (M)cN0cN+
jeddahcT1b (SM)
Differentiated,≤ 2 cm, UL (-)Differentiated,≤1.5 cm Endoscopic rection Gastrectomy,
D1Gastrectomy,
D1+
Standard gastrectomy,
D2Chemotherapy, radiotherapy,palliative surgery,palliative care medicine
Yes
Yes
No
No
cT4b
Gastrectomy, combined rection,
D2
Gastric carcinoma
p-Stage II, III
except pT1 and pT3(SS)pN0
Obrvation
Adjuvant chemotherapy p-Stage I
Stage IV
Chemotherapy, best supportive care
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gastrectomy with curative intent.A proximal margin of at least3cm is recommended for T2or deeper tumors with an expansive growth pattern(Types1and2)and5cm is rec-ommended for tho with infiltrative growth pattern(Types3 and4).When the rules cannot be obrved,it is advisable to examine the proximal rection margin by frozen ction. For tumors invading the esophagus,a5-cm
margin is not necessarily required,but frozen ction examination of the rection line is desirable to ensure an R0rection.
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For T1tumors,a gross rection margin of2cm should be obtained.When the tumor border is unclear,preopera-tive endoscopic marking,by clips,of the tumor border bad on biopsy results will be helpful for decision-making regarding the rection line.
2.2.2.2Selection of gastrectomy The standard surgical procedure for clinically node-positive(cN?)or T2-T4a tumors is either total or distal gastrectomy.Distal gastrectomy is lected when a satisfactory proximal rection margin(e above)can be obtained.Pancreatic invasion by tumor requiring pancreaticosplenectomy necessitates total gastrec-tomy regardless of the tumor location.Total gastrectomy with splenectomy should be considered for tumors that are located along the greater curvature and harbor metastasis to no.4sb lymph nodes,even if the primary tumor could be removed by distal gastrectomy.For adenocarcinoma located on the prox-imal side of the esophagogastric junction,esophagectomy and proximal gastrectomy with gastric tube reconstruction should be considered,similarly to surgery for esophageal cancer.
For cT1cN0tumors,gastric rection can be modified as follows according to tumor location.
–Pylorus-prerving gastrectomy(PPG)for tumors in the middle portion of the stomach with the distal tumor border at least4cm proximal to the pylorus.
–Proximal gastrectomy for proximal tumors where more than half of the distal stomach can be prerved.
Segmental gastrectomy and local rection are still regarded as investigational treatments.
2.3Lymph node disction
2.3.1Extent of lymph node disction
The extent of systematic lymphadenectomy is defined as follows according to the type of gastrectomy indicated. When the lymphadenectomy performed does not comply with the D level criteria(either when lymph nodes outside the requirement for the D criteria are rected or when nodal disction is insufficient to fulfill the criteria),the lymph node station that has been discted or omitted should be specified,as in the following examples:D1 (?No.8a),D2(-No.10).When reporting the data to construct a formal databa,only the D level that has been completely rected should be provided.
2.3.1.1Total gastrectomy
D0:Lymphadenectomy less than D1
D1:Nos.1–7
D1?:D1?Nos.8a,9,11p
D2:D1?Nos.8a,9,10,11p,11d,12a.
For tumors invading the esophagus,D1?includes No. 1101,D2includes Nos.19,20,110,and 111.
4d4sb
1
2
4sa
6
3
5
7
8a11p
11d10
12a
9
2015考研政治真题
Total gastrectomy
2.3.1.2Distal gastrectomy
D0:Lymphadenectomy less than D1
D1:Nos.1,3,4sb,4d,5,6,7
D1?:D1?Nos.8a,9
D2:D1?Nos.8a,9,11p,12a.
4d
4sb
1
6
3
5
7
8a11p
12a
9
Distal gastrectomy
1No.110lymph nodes(lower thoracic para-esophageal nodes)in gastric cancer invading the esophagus are tho attached to the lower part of the esophagus that is removed to obtain a sufficient rection margin.
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2.3.1.3Pylorus-prerving gastrectomy D0:Lymphadenectomy less than D1D1:Nos.1,3,4sb,4d,6,7D1?:
D1?Nos.8a,9.
4d
4sb
16
3
7
8a
9
广州西点培训
Pylorus-prerving gastrectomy
2.3.1.4Proximal gastrectomy D0:Lymphadenectomy less than D1D1:Nos.1,2,3a,4sa,4sb,7D1?:
D1?Nos.8a,9,11p.
4sb
1
2
4sa
3a
7
8a
11p
9
Proximal gastrectomy
For tumors invading the esophagus,D1?includes node No.110(e footnote 1on the preceding page).2.3.2Indications for lymph node disction
In principle,a D1or a D1?lymphadenectomy is indicated for cT1N0tumors,and D2is indicated for cN ?or cT2-T4tumors.Becau the pre-and intraoperative diagnos of lymph node metastas remain unreliable,a D2
lymphadenectomy should be performed whenever nodal involvement is suspected.
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2.3.2.1D1lymphadenectomy A D1lymphadenectomy is indicated for T1a tumors that do not meet the criteria for endoscopic mucosal rection (EMR)/endoscopic submu-cosal rection (ESD),and for cT1bN0tumors that are histologically of differentiated type and 1.5cm or smaller in diameter.
超pp连连看2.3.2.2D1?lymphadenectomy A D1?lymphadenec-tomy is indicated for cT1N0tumors other than the above.
2.3.2.3D2lymphadenectomy A D2lymphadenectomy is indicated for potentially curable T2-T4tumors,as well as cT1N ?tumors.The role of splenectomy for complete rection of No.10and No.11nodes has long been con-troversial and the final results of randomized trial JCOG 0110are awaited [4].In the meantime,complete clearance of No.10nodes by splenectomy should be considered for potentially curable T2-T4tumors invading the greater curvature of the upper stomach.
2.3.2.4D2?lymphadenectomy Gastrectomy with exten-ded lymphadenectomy beyond D2is classified as a non-standard gastrectomy.Its role has been discusd as follows:–
The benefit of prophylactic para-aortic lymphadenec-tomy was denied by the Japane randomized con-trolled trial (RCT)JCOG 9501[5].
–
Although an R0rection may be possible for tumors with para-aortic nodal involvement without other non-curative factors,the prognosis of this population is poor.
–
The role of No.14v lymphadenectomy in distal gastric cancer is controversial.Disction of node No.14v had been a part of D2gastrectomy defined by the previous edition of the Japane classification [6],but it has been excluded from the current edition.However,D2(?No.14v)may be beneficial in tumors with apparent metastasis to the No.6nodes.
–
Involvement of No.13nodes is defined as M1in the current version of the Japane classification .How-ever,D2(?No.13)lymphadenectomy may be an option in a potentially curative gastrectomy for tumors invading the duodenum [7].
2.4Miscellaneous
2.4.1Vagal nerve prervation
It is reported that prervation of the hepatic branch of the anterior vagus and/or the celiac branch of the posterior
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vagus contributes to improving the postoperative quality of life through reducing post-gastrectomy gallstone forma-tion,diarrhea,and/or weight loss.In PPG,the hepatic branch should be prerved to maintain pyloric function.
2.4.2Omentectomy
英文歌曲 经典Removal of the greater omentum is usually integrated in the standard gastrectomy for T3(SS)or deeper tumors.For T1/T2tumors,the omentum more than3cm away from the gastroepiploic arcade may be prerved.
2.4.3Burctomy
For tumors penetrating the rosa of the posterior gastric wall,burctomy(removal of the inner peritoneal surface of the bursa omentalis)may be performed with the aim of removing microscopic tumor deposits in the lesr sac. There is no evidence that burctomy reduces peritoneal or local re
currence,and it should be avoided in T1/T2tumors to prevent injury to the pancreas and/or adjacent blood vesls.
A small-scale RCT recently suggested a survival benefit for burctomy in T3/T4a tumors.A large-scale multi-institutional RCT has been commenced to address this issue(JCOG1001).
2.4.4Combined rection of adjacent organ(s)
For tumors in which the primary or metastatic lesion directly invades adjacent organs,combined rection of the involved organ may be performed in order to obtain an R0 rection.
2.4.5Approaches to the lower esophagus
For gastric cancers invading less than3cm of the distal esophagus,a transhiatal abdominal approach is recom-mended[8].Where a greater length of esophagus is involved a transthoracic approach should be considered if the surgery is potentially curative.
2.4.6Laparoscopic surgery
Laparoscopic surgery has been increasingly employed, largely for T1tumors,as it has some advanta
ges over open surgery in terms of minimal invasiveness.However,it is technically demanding and solid evidence regarding safety and long-term outcome remains lacking.It should thus be considered as an investigational treatment and should be evaluated further in clinical rearch ttings(Refer to the Sect.6.2).
2.5Reconstruction after gastrectomy
The following reconstruction methods are usually employed.Each has advantages and disadvantages.The functional benefits of pouch reconstruction are yet to be established.
2.5.1Total gastrectomy
–Roux-en-Y esophagojejunostomy
–Jejunal interposition
–Double tract method
2.5.2Distal gastrectomy
–Billroth I gastroduodenostomy
–Billroth II gastrojejunostomy
–Roux-en-Y gastrojejunostomy
–Jejunal interposition
2.5.3Pylorus-prerving gastrectomy
–Gastro-gastrostomy
2.5.4Proximal gastrectomy
–Esophagogastrostomy
–Jejunal interposition
–Double tract method.
3Endoscopic rection
3.1Methods of endoscopic rection
3.1.1Endoscopic mucosal rection(EMR)
The lesion,together with the surrounding mucosa,is lifted by submucosal injection of saline(normo-or hypertonic) and removed using a high-frequency steel snare.
3.1.2Endoscopic submucosal disction(ESD)
The mucosa surrounding the lesion is circumferentially incid using a high-frequency electric knife(usually
Japane gastric cancer treatment guidelines2010(ver.3)117
