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Colon Cancer

Scott David Diamond, DO and Laura B. Bishop, MD Reviewed 06/2020
 


BASICS

DESCRIPTION

  • Colon and rectal cancers (CRC) are often grouped together but are two distinct clinical entities that differ in their prognosis, presentation, staging, and management.

  • CRC is the seco...

DIAGNOSIS

HISTORY

  • Most patients with colon cancer are asymptomatic.

  • Microcytic, iron-deficiency anemia in men of any age and postmenopausal women is CRC until proven otherwise; therefore, evaluation mus...

TREATMENT

ADDITIONAL THERAPIES

Adjuvant chemotherapy is most clearly beneficial for stage III (node-positive) disease, in which improvements of 30% can be achieved in both disease recurrence and overal...

ONGOING CARE

FOLLOW-UP RECOMMENDATIONS

Patient Monitoring

  • Risk of recurrence is greatest in first 4 years; 80% in first 2.5.

  • H&P and CEA every 3 to 6 months for 5 years.

  • Annual CT of chest, abdomen, p...

REFERENCES

1
Key Statistics for Colorectal Cancer, American Cancer Society. Cancer Facts & Figures 2019. Atlanta, GA: American Cancer Society; 2019. https://www.cancer.org/cancer/colon-rectal-cance...

CODES

ICD10

  • C18.9 Malignant neoplasm of colon, unspecified

  • C18.2 Malignant neoplasm of ascending colon

  • C18.8 Malignant neoplasm of overlapping sites of colon

  • C18.7 Malignant neoplasm of sigmoid colon

  • C18.6...

CLINICAL PEARLS

  • Microcytic, iron deficiency anemia in men of all ages and postmenopausal women is CRC until proven otherwise, and colonoscopy should be performed.

  • Colon cancer screening decreases morta...

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