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Zorluk: OrtaPreventive Care and Screening

A 43-year-old male arrives at the internal medicine clinic for a routine wellness evaluation. He has no acute symptoms and generally feels well. His past medical history is notable only for mild hyperlipidemia, for which he takes rosuvastatin and follows a heart-healthy diet. He exercises regularly, drinks alcohol on social occasions, and has never smoked or used illicit substances. His family history is significant for a father who was diagnosed with colon cancer at age 51. The patient has never undergone any gastrointestinal endoscopic procedures or noninvasive colorectal cancer screening. His vital signs are within normal limits, and his physical examination is unremarkable. Which of the following is the most appropriate next step regarding colorectal cancer screening for this patient?

  1. A
    Perform annual fecal immunochemical testing now
  2. Perform a screening colonoscopy nowCevap
  3. C
    Recommend screening colonoscopy beginning at age 45
  4. D
    Recommend screening colonoscopy beginning at age 50
  5. E
    Order a serum carcinoembryonic antigen level

Cevap

Perform a screening colonoscopy now
The correct action is to perform a screening colonoscopy now. According to current preventive guidelines, patients with a single first-degree relative diagnosed with colorectal cancer or an advanced adenoma before the age of 60 are considered at high risk. For these high-risk individuals, screening must be performed exclusively via colonoscopy. The recommended starting age is 40 years, or 10 years earlier than the youngest affected relative's age at diagnosis, whichever comes first. In this vignette, the patient's father was diagnosed at age 51. Ten years prior to the father's diagnosis is age 41. Because age 40 is earlier than 41, the patient should have begun screening at age 40. At 43 years of age with no prior screening history, he is overdue and requires an immediate screening colonoscopy.

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1
Assess the patient's risk category based on his family history.
The patient has a first-degree relative (father) diagnosed with colon cancer at age 51, placing him in a high-risk category.
Family history dictates the modality, starting age, and frequency of colorectal cancer screening.
2
Determine the recommended screening modality for high-risk patients.
High-risk patients must be screened using direct visualization via colonoscopy, rather than stool-based noninvasive tests.
Colonoscopy provides the highest sensitivity and allows for immediate therapeutic intervention (polypectomy) in populations with elevated pretest probability.
3
Calculate the correct starting age for this patient's screening.
Guidelines recommend starting at age 40, or 10 years prior to the relative's diagnosis (age 41). The earlier of these two is age 40.
The 10-year rule accounts for the estimated time it takes for an adenoma to transform into a carcinoma.
4
Compare the calculated starting age with the patient's current age.
The patient is 43 years old and has never been screened, meaning he is overdue for a colonoscopy.
Immediate scheduling of a colonoscopy is the necessary guideline-concordant next step.

Anahtar Kavram

High-risk colorectal cancer screening guidelines based on family history
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Preventive Care and Screening

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