What is gastric cancer?

Gastric cancer, also known as stomach cancer, is a type of cancer that starts in the stomach. It is one of the most common types of cancer worldwide.

The stomach is a J-shaped organ that sits in the upper left side of the abdomen. It is responsible for digesting food and absorbing nutrients. The stomach is made up of several layers of tissue, including the mucosa (the innermost layer), the submucosa, and the muscularis.

Gastric cancer can occur in any of the layers of the stomach. The most common type of gastric cancer is adenocarcinoma, which starts in the cells that line the mucosa. Other types of gastric cancer include squamous cell carcinoma, lymphoma, and gastrointestinal stromal tumors (GISTs).

Gastric cancer can be a serious disease, but it can be treated successfully if it is found early. The treatment for gastric cancer depends on the stage of the cancer, the patient's overall health, and the patient's preferences.

The symptoms of gastric cancer can include:

* Abdominal pain

* Nausea and vomiting

* Heartburn

* Indigestion

* Loss of appetite

* Weight loss

* Fatigue

* Anemia

* Blood in the stool

If you are experiencing any of these symptoms, it is important to see a doctor right away. Gastric cancer is often curable if it is found and treated early.