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==Overview==
==Overview==
Screening may be effective in reducing the incidence of esophageal cancer, especially with Barrett's esophagus-associated adenocarcinoma, however, not very cost effective.
Screening may be effective in reducing the incidence of esophageal cancer, especially in Barrett's esophagus-associated adenocarcinoma, however, not very cost effective.


==Screening==
==Screening==
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===Adenocarcinoma screening===
===Adenocarcinoma screening===


*The predominant type of esophageal cancer in the United States is adenocarcinoma.  
*The predominant type of esophageal cancer in the United States is [[adenocarcinoma]].  
*Under current guidelines, random endoscopic biopsies are taken in all 4 quadrants with a high resolution endoscope.  
*Under current guidelines, random endoscopic [[Biopsy|biopsies]] are taken in all 4 quadrants with a high resolution [[Endoscopy|endoscope]].  
*Dysplasia within lesions of Barrett's esophagus indicates a marked increase in cancer risk.  
*[[Dysplasia]] within lesions of the [[esophagus]] indicates a marked increase in cancer risk.  
*It should be noted that those who presented with adenocarcinoma demonstrated no prior Barrett's esophagus in 80 - 90% of the time.  
*It should be noted that those who presented with adenocarcinoma demonstrated no prior [[Barrett's esophagus]] in 80 - 90% of the time.  
*Most dysplastic changes were found in 50 year old white men.  
*Most dysplastic changes are found in white men that are older than 50 years of age.  
*In one study, the authors concluded that the only cost-effective strategy was once in a lifetime screening of 50-year-old white men with GERD, followed by surveillance of those with dysplasia only.<ref name="pmid26185366">{{cite journal |vauthors=Domper Arnal MJ, Ferrández Arenas Á, Lanas Arbeloa Á |title=Esophageal cancer: Risk factors, screening and endoscopic treatment in Western and Eastern countries |journal=World J. Gastroenterol. |volume=21 |issue=26 |pages=7933–43 |year=2015 |pmid=26185366 |pmc=4499337 |doi=10.3748/wjg.v21.i26.7933 |url=}}</ref>
*One study surmised that the only cost-effective strategy was once in a lifetime screening of 50+ year old, white men with GERD, followed by surveillance of those with dysplasia only.<ref name="pmid26185366">{{cite journal |vauthors=Domper Arnal MJ, Ferrández Arenas Á, Lanas Arbeloa Á |title=Esophageal cancer: Risk factors, screening and endoscopic treatment in Western and Eastern countries |journal=World J. Gastroenterol. |volume=21 |issue=26 |pages=7933–43 |year=2015 |pmid=26185366 |pmc=4499337 |doi=10.3748/wjg.v21.i26.7933 |url=}}</ref>


===Squamous cell carcinoma screening===
===Squamous cell carcinoma screening===


*Since this histological type of esophageal cancer exists in the more underdeveloped countries, there is no reliable data to suggest that screening programs are effective when implemented.  
*Since squamous cell carcinoma of the esophagus is prevalent more in underdeveloped countries, there is no reliable data to suggest that screening programs are effective when implemented.  
*However, in China, esophageal cancer is the sixth most common cancer and the fourth most common cause of death from cancer, the incidence of which is about 287,000 new cases and 211,000 deaths in 2012. A screening program has been put into effect where those with mild to moderate dysplasia are examined via endoscopy every 3 years, whilst those with severe dysplasia are screened once per year. Therefore, high risk populations may be of benefit in reducing the incidence of esophageal cancer.
*However, in China, esophageal cancer is the sixth most common cancer and the fourth most common cause of death from cancer.
**In 1983, a study was carried out in Hishun village, China.
*In China, 287,000 new cases of esophageal squamous cell carcinoma and 211,000 deaths were reported in 2012.  
**Due to different dietary factors, the incidence of esophageal cancer amongst these people was particularly high.
*A screening program in a high risk population was put into effect where those with mild to moderate dysplasia are examined via endoscopy every 3 years, whilst those with severe dysplasia were screened once per year.  
**6758 subjects were examined by esophageal exfoliative cytology, 1729 had marked dysplasia and 2411 had mild dysplasia of esophageal epithelium.
*The patients were concomitantly treated with monoclonal antibodies for the next three years, and the incidence decreased by 57%.
**Those with marked dysplasia were randomly divided into 3 groups and given: antitumor B (Chinese herbs); retinamide (4-Ethoxycarbophenylretinamide) and placebo.
*These results demonstrated that the screening for esophageal squamous cell carcinoma is effective in the prevention of esophageal cancer.<ref name="pmid3219974">{{cite journal |vauthors=Lin PZ, Zhang JS, Cao SG, Rong ZP, Gao RQ, Han R, Shu SP |title=[Secondary prevention of esophageal cancer--intervention on precancerous lesions of the esophagus] |language=Chinese |journal=Zhonghua Zhong Liu Za Zhi |volume=10 |issue=3 |pages=161–6 |year=1988 |pmid=3219974 |doi= |url=}}</ref>
**The subjects with mild dysplasia were randomly divided  into 2 groups for treatment with riboflavin and placebo.
**They took their respective treatments for 3 years and were then reexamined using cytology.
**The incidence of esophageal cancer in the antitumor B group was reduced by 53% as compared with that of the placebo group (8.3%).
**The incidence of esophageal cancer in retinamide and riboflavin groups were reduced by 33.7% and 19% as compared with those of the control groups.
**These results demonstrated that the secondary prevention of esophageal cancer is effective in the prevention of esophageal cancer.<ref name="pmid3219974">{{cite journal |vauthors=Lin PZ, Zhang JS, Cao SG, Rong ZP, Gao RQ, Han R, Shu SP |title=[Secondary prevention of esophageal cancer--intervention on precancerous lesions of the esophagus] |language=Chinese |journal=Zhonghua Zhong Liu Za Zhi |volume=10 |issue=3 |pages=161–6 |year=1988 |pmid=3219974 |doi= |url=}}</ref>


==References==
==References==

Revision as of 19:40, 14 December 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hadeel Maksoud M.D.[2]

Overview

Screening may be effective in reducing the incidence of esophageal cancer, especially in Barrett's esophagus-associated adenocarcinoma, however, not very cost effective.

Screening

Adenocarcinoma screening

  • The predominant type of esophageal cancer in the United States is adenocarcinoma.
  • Under current guidelines, random endoscopic biopsies are taken in all 4 quadrants with a high resolution endoscope.
  • Dysplasia within lesions of the esophagus indicates a marked increase in cancer risk.
  • It should be noted that those who presented with adenocarcinoma demonstrated no prior Barrett's esophagus in 80 - 90% of the time.
  • Most dysplastic changes are found in white men that are older than 50 years of age.
  • One study surmised that the only cost-effective strategy was once in a lifetime screening of 50+ year old, white men with GERD, followed by surveillance of those with dysplasia only.[1]

Squamous cell carcinoma screening

  • Since squamous cell carcinoma of the esophagus is prevalent more in underdeveloped countries, there is no reliable data to suggest that screening programs are effective when implemented.
  • However, in China, esophageal cancer is the sixth most common cancer and the fourth most common cause of death from cancer.
  • In China, 287,000 new cases of esophageal squamous cell carcinoma and 211,000 deaths were reported in 2012.
  • A screening program in a high risk population was put into effect where those with mild to moderate dysplasia are examined via endoscopy every 3 years, whilst those with severe dysplasia were screened once per year.
  • The patients were concomitantly treated with monoclonal antibodies for the next three years, and the incidence decreased by 57%.
  • These results demonstrated that the screening for esophageal squamous cell carcinoma is effective in the prevention of esophageal cancer.[2]

References

  1. Domper Arnal MJ, Ferrández Arenas Á, Lanas Arbeloa Á (2015). "Esophageal cancer: Risk factors, screening and endoscopic treatment in Western and Eastern countries". World J. Gastroenterol. 21 (26): 7933–43. doi:10.3748/wjg.v21.i26.7933. PMC 4499337. PMID 26185366.
  2. Lin PZ, Zhang JS, Cao SG, Rong ZP, Gao RQ, Han R, Shu SP (1988). "[Secondary prevention of esophageal cancer--intervention on precancerous lesions of the esophagus]". Zhonghua Zhong Liu Za Zhi (in Chinese). 10 (3): 161–6. PMID 3219974.


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