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Obesity and Metabolic Surgery Specialist - Op. Dr. Serkan Tugen

Gastrointestinal System Cancers

Gastrointestinal System Cancers
Gastrointestinal System Cancers

Digestive system consists of  oesophagus, stomach, small intestine, and large intestine anus, liver, pancreas and gallbladder.

 All these organs work together to absorb the nutrients that we receive from the blood and then move them into the cells.

Colorectal cancer is the 3rd  most common  type of cancer.Colorectal cancer can be diagnosed and treated early, or it can be prevented by screening programs. It is usually seen over 50 years old. But in recent years, the frequency of the occurrence of under 50 years has been increased.

Pancreatic cancer is the second leading cause of cancer death in 2020. he's expected to rise to the line.In studies conducted, the incidence of cancer of the esophagus is the fastest growing cancer. 

The incidence of liver cancer is increased by 3%, and the rate of hep-C infection is increased.


  • Smoke
  • Obesity
  • Red and processed meat consumption instead of fruits vegetables and fiber foods, 
  • Excessive alcohol consumption
  • Type 2 diabetes
  • Hep B, Hep c , HPV , H.Pylori infections
  • Reflux


  • Inflammatory bowel disease( lasting more than 8 years))
  • Family history of breast cancer, the risk of developing breast cancer increases with age.),
  • All digestive system cancers are usually seen over the age of 50, but can be seen at an ever younger age.
  • Men are at greater risk than women, except for anal cancer and gallbladder cancers.


  • Alcohol should be taken at rare intervals
  • Family factors and family history of cancer should be well studied
  • Physical activity should be increased
  • Fruit and vegetable-based nutrition 
  • Smoking should be left
  • overweights should be given to
  • For preventable diseases (e.g. Hep-B) vaccination should be done
  • Changes in bowel habits ( diarrhea, constipation), blood in stool, difficulty swallowing, skin discoloration, progressive and persistent abdominal pain, unwanted weight loss,
  • Your doctor should be informed of any abnormal symptoms


As with all other cancers, early diagnosis is vital in the digestive system cancers. X-ray,computer tomography ,MRI, although useful in diagnosing the esophagus, stomach, intestines such as empty organs in the evaluation is not very effective. Endoscopic examinations ( endoscopy/ colonoscopy) closing this gap, it is very important both to sample suspicious areas in imaging and to detect and remove pre-cancerous lesions.

Treatment is multidisciplinary. In addition to surgery, radiation therapy,chemotherapy, or a combination of these treatments, radiation therapy may be used to treat cancer that has spread to other parts of the body.