Risk factors for stomach cancer include: smoking, alcohol abuse, previous stomach surgery, blood type A, family history of stomach cancer, stomach polyps and Menetrier's disease.
An estimated 90 to 95% of stomach cancers are classified as adenocarcinomas.
Stomach cancer is found mostly in men and women who are 60 years of age or older.
Symptoms of stomach cancer, which are usually seen in advanced stages of the disease, include abdominal pain, nausea, vomiting, poor appetite, indigestion, and unexpected weight loss.
People with early stage stomach cancer, the tumor is small in size and has not spread or metastasized to any other major organs, are many times asymptomatic or have not exhibited any notable symptoms.