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Basis for Colon Cancer Diagnosis
1.Clinical presentation assessment: Preliminary evaluation is based on symptoms such as hematochezia, abdominal pain, and changes in bowel habits, together with abdominal examination findings.
2.Colonoscopy: The gold standard. Lesions are directly visualized and biopsied; chromoendoscopy and magnifying endoscopy can improve detection of early cancer.
3.Imaging examinations: Abdominal CT/MRI are used for staging and evaluation of local invasion, while PET-CT screens for distant metastasis.
4.Laboratory testing: Carcinoembryonic antigen (CEA) is used to monitor treatment response and recurrence; complete blood count and liver function tests assess systemic status.
5.Pathological diagnosis: Biopsy confirms histologic type, degree of differentiation, and depth of invasion, guiding treatment decisions.
6.Fecal occult blood testing: Immunochemical testing is used for primary screening in asymptomatic populations; colonoscopy is required for confirmation in positive cases.
7.Genetic testing: RAS/BRAF mutations and mismatch repair protein status guide targeted therapy and immunotherapy selection.
8.Endoscopic ultrasonography: Assesses depth of invasion and lymph node involvement, supporting staging and treatment decision-making in early-stage disease.
Conclusion
Jinshazhou Hospital of Guangzhou University of Chinese Medicine emphasizes that early diagnosis of colon cancer is pivotal. Establishing standardized colonoscopic screening, integrating imaging for accurate staging, and developing individualized plans incorporating surgery, chemotherapy, and targeted therapies based on molecular subtyping can substantially improve cure rates and quality of survival.
Basis for Colon Cancer Diagnosis
1.Clinical presentation assessment: Preliminary evaluation is based on symptoms such as hematochezia, abdominal pain, and changes in bowel habits, together with abdominal examination findings.
2.Colonoscopy: The gold standard. Lesions are directly visualized and biopsied; chromoendoscopy and magnifying endoscopy can improve detection of early cancer.
3.Imaging examinations: Abdominal CT/MRI are used for staging and evaluation of local invasion, while PET-CT screens for distant metastasis.
4.Laboratory testing: Carcinoembryonic antigen (CEA) is used to monitor treatment response and recurrence; complete blood count and liver function tests assess systemic status.
5.Pathological diagnosis: Biopsy confirms histologic type, degree of differentiation, and depth of invasion, guiding treatment decisions.
6.Fecal occult blood testing: Immunochemical testing is used for primary screening in asymptomatic populations; colonoscopy is required for confirmation in positive cases.
7.Genetic testing: RAS/BRAF mutations and mismatch repair protein status guide targeted therapy and immunotherapy selection.
8.Endoscopic ultrasonography: Assesses depth of invasion and lymph node involvement, supporting staging and treatment decision-making in early-stage disease.
Conclusion
Jinshazhou Hospital of Guangzhou University of Chinese Medicine emphasizes that early diagnosis of colon cancer is pivotal. Establishing standardized colonoscopic screening, integrating imaging for accurate staging, and developing individualized plans incorporating surgery, chemotherapy, and targeted therapies based on molecular subtyping can substantially improve cure rates and quality of survival.