Colon Cancer Symptoms

Overview of Colon Cancer

It is important to recognize the increased risk for cancer in patients with hereditary cancer syndromes, but by far the most common form of colon cancer is sporadic in nature, without an associated strong family history.

Although the cause and pathogenesis of adenocarcinoma are similar throughout the large bowel, colon cancer, significant differences in the use of diagnostic and therapeutic modalities separate colonic from rectal cancers. This distinction is largely due to the confinement of the rectum by the bony pelvis. The limited mobility of the rectum allows MRI to generate better images and

colon cancer

colon cancer

Colon Cancer Symptoms

Comparison of the Five Most Frequent Symptoms in Rectal, Left Colon, and Right Colon Cancer
Rectum and Rectosigmoid (258 Patients) Left Colon (99 Patients) Right Colon (984 Patients)
Melena (85%) Abdominal pain (72%) Abdominal pain (74%)
Constipation (46%) Melena (53%) Weakness (29%)
Tenesmus (30%) Constipation (42%) Melena (27%)
Diarrhea (30%) Nausea (25%) Nausea (24%)
Abdominal pain (26%) Vomiting (23%) Abdominal mass (23%)

Variation in Symptoms of Right Colon, Left Colon, and Rectal Cancer
Symptom Right Colon Left Colon Rectum
Pain Ill-defined Colicky Steady, gnawing
Obstruction Infrequent Common Infrequent
Bleeding Brick red Red, mixed with stool Bright red, coating stool

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