Early symptoms of colon cancer

Written by Gong Chun
Oncology
Updated on August 31, 2024
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Colon cancer often does not have obvious symptoms in its early stages, and of course, the specific situation needs to be analyzed on a case-by-case basis, as it varies from person to person. As the disease progresses, some clinical symptoms may appear. The first one is changes in bowel habits and stool characteristics; there might be blood in the stool, changes such as an increased frequency of defecation, urgency followed by a feeling of incomplete evacuation, and a sensation of rectal fullness, along with possible changes in the shape or thinning of the stool. The second possible symptom is abdominal pain, which may also be accompanied by a feeling of bloating or abdominal discomfort. The third possibility is the symptoms of intestinal obstruction, which include cessation of bowel movements and passing gas. The fourth is that a mass may be felt in the abdomen. The fifth point is that some individuals, especially those in poor health, may experience symptoms of nutritional depletion from the tumor, such as anemia, weight loss, and fatigue. If there is early metastasis, symptoms corresponding to the metastasis may also appear.

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The most common symptoms of transverse colon cancer

The most common symptoms of transverse colon cancer mainly include abdominal pain, bloody stools, and changes in stool characteristics, such as thinner stools, which can sometimes lead to severe symptoms of intestinal obstruction. After these symptoms appear in transverse colon cancer, it is advisable to undergo a colonoscopy as soon as possible. Pathology obtained through the colonoscopy can confirm the diagnosis. Once transverse colon cancer is confirmed, it is also necessary to check for metastases to other parts of the body. For non-metastasized cases, early surgical treatment should be carried out, including a radical surgery for transverse colon cancer with lymph node dissection. Postoperative comprehensive anti-tumor treatment is generally required, involving six to eight courses of adjuvant chemotherapy. Postoperative chemotherapy aims to prevent local recurrence and distant metastasis.

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Difference between colon polyps and colon cancer

Colon polyps and colon cancer both belong to organic tumors of the colon mucosa, but the fundamental difference is that colon polyps are mostly benign, while colon cancer is a malignant cancer of the intestines. Both colon cancer and colon polyps require examination by electronic colonoscopy for a definitive diagnosis, and further pathological examination is needed. After the detection of colon polyps, it is necessary to promptly perform radiofrequency ablation surgery under electronic colonoscopy. After the detection of colon cancer, it is necessary to complete relevant pelvic and systemic examinations, and after clarifying the local lesions, surgical removal is performed. Postoperatively, based on the size of the cancerous mass and the extent of the lesion, radiation therapy or chemotherapy may be required.

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Is lower right abdominal pain colon cancer?

Pain in the lower right abdomen does not necessarily indicate colon cancer, as there are many possible causes of this pain. Common conditions include acute or chronic appendicitis, gynecological diseases such as pelvic inflammatory disease, torsion of a right ovarian cyst, ectopic pregnancy, and others. Additionally, urological issues like a stone in the lower part of the right ureter can cause severe pain in the lower right abdomen, which are again not indicative of colon cancer. Gastrointestinal diseases like Crohn's disease often lead to pain in the lower right abdomen. Of course, tumors in the ileocecal area or ascending colon can also cause such pain. Hence, while lower right abdominal pain is not necessarily due to colon cancer, in rare cases, it could be.

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Is intermittent pain in the upper right abdomen for two months colon cancer?

Persistent dull pain in the upper right abdomen lasting two months is very likely a clinical symptom caused by colon cancer. This is often due to the lesion of colon cancer invading the intestinal mucosa, causing mucosal spasms and resulting in pain. Alternatively, the tumor may cause obstruction of the intestinal lumen, leading to intestinal obstruction, which also presents as pain clinically. This type of pain is generally characterized by persistent dull pain, especially more pronounced at night, and ordinary anti-inflammatory and analgesic drugs are less effective in relieving it. The pain will only subside after the lesions of colon cancer are effectively controlled. However, for dull pain in the upper right abdomen, some benign diseases, such as certain ulcerative colitis or chronic intestinal tuberculosis, should also be considered, as they can present with similar symptoms. To definitively diagnose whether the dull pain is caused by colon cancer or a benign colon condition, it is generally necessary to complete related imaging or hematological examinations. Sometimes, histopathological examinations are necessary to differentiate the diagnosis.

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How long can one live after colon cancer surgery?

If colon cancer can be treated surgically, generally, the outcomes might be quite good. It often applies to cancer in relatively early stages, with potentials to survive for over three years, five years, or even longer. Of course, there are cases of colon cancer that are discovered in later stages, where complete surgical removal is not possible, and only palliative stoma surgery can be performed. In such situations, the survival time might be within three to five years, but the exact life expectancy cannot be fully determined. Each individual's condition is different, and treatment must be adapted accordingly. Typically after surgery, treatments like chemotherapy, radiation therapy, and targeted therapy might be used in combination to prolong survival.