Cancer (Stomach, colorectal)

What are stomach, and colorectal cancers?

In stomach cancer, cancer cells usually begin on the inner lining of
stomach walls and then penetrate deeper into the stomach walls as the
cancer develops. The tumor may grow to involve nearby organs like the
liver and pancreas.

Cancer that begins in the colon is called a colon cancer, while cancer
in the rectum is known as a rectal cancer. Cancers that affect either
of these organs may be called colorectal cancer.

What are the symptoms of
stomach and colorectal cancers?

Symptoms of stomach cancer include nausea and vomiting, difficulty
swallowing, heartburn, loss of appetite, weight loss, fatigue, bloating, and
vomiting blood.

Some colorectal cancers may be present without any symptoms or signs.
However, some other common symptoms of colorectal cancer may include
a change in bowel habits, constipation, diarrhea, narrowing of stools,
incomplete evacuation, and bowel incontinence, blood on or in the stool,
unexplained shortness of breath, tiredness and sluggishness, abdominal
or pelvic pain or bloating, unexplained weight loss, and vomiting.