Mayo Clinic explains that doctors are uncertain of the cause of colon cancer. Symptoms of colon cancer include blood in the stool, weight loss that cannot be explained, reoccurring cramps in the abdomen, variations in bo... More » Health Conditions & Diseases Cancer

Back pain can be a symptom of colon and rectal cancer and most commonly occurs after the malignancy has spread, according to the American Cancer Society. As a colon tumor grows, it may become so large that it pushes agai... More »

Black stool is often caused by bleeding in the upper gastrointestinal tract, specifically in the esophagus, stomach or small intestines, notes Healthgrades. Medication and other ingested substances, including black licor... More » Health Pain & Symptoms

Persistent abdominal pain, sometimes associated with gas or cramps, may occur in patients with colon cancer, states Mayo Clinic. In the early stages of the disease, there are often no symptoms. When symptoms occur, they ... More » Health Conditions & Diseases Cancer

Most cases of colon cancer do not show symptoms, but symptoms such as abdominal pain, weight loss, diarrhea, narrow stools, weakness and rectal bleeding may indicate the presence of colon cancer, as stated by Mayo Clinic... More »

Symptoms that are mistaken for colon cancer include the symptoms of irritable bowel syndrome, Crohn's disease and diverticulosis, according to Mayo Clinic, WebMD, the American Cancer Society and MedicineNet. They include... More » Health Conditions & Diseases Cancer

The signs and symptoms of colon cancer include rectal bleeding, diarrhea, constipation and chronic stomach discomfort, according to Mayo Clinic. However, symptoms can vary depending on the extent of the condition. In man... More »