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Zorluk: ZorPreventive Care and Screening

A 73-year-old man presents to the clinic for a health maintenance visit. He has not seen a healthcare provider in over a decade. His medical history is significant for ischemic cardiomyopathy with a left ventricular ejection fraction of 25%, New York Heart Association class III heart failure, and severe chronic obstructive pulmonary disease requiring continuous home oxygen therapy. He is a current smoker with a 55 pack-year smoking history. The patient spends the majority of his day resting in a recliner due to dyspnea on minimal exertion. His medications include aspirin, metoprolol succinate, sacubitril-valsartan, empagliflozin, furosemide, and a fluticasone-umeclidinium-vilanterol inhaler.

He has never undergone screening for colon, prostate, or lung cancer. He recently read an article about the importance of early cancer detection and asks which screening tests he should undergo today.

Which of the following is the most appropriate recommendation regarding cancer screening for this patient?

  1. Advise against routine cancer screeningCevap
  2. B
    Initiate screening with low-dose computed tomography of the chest
  3. C
    Recommend annual colorectal screening with a fecal immunochemical test
  4. D
    Refer the patient for a screening colonoscopy
  5. E
    Order a serum prostate-specific antigen test

Cevap

The most appropriate recommendation is to advise against routine cancer screening due to the patient's severely limited life expectancy and high operative risk.
The correct recommendation is to advise against routine cancer screening. Although this patient meets the strict age and risk factor criteria for both lung and colorectal cancer screening, the foundational principle of preventive care requires that a patient have a sufficient life expectancy to realize a benefit. The mortality benefit of colorectal cancer screening takes approximately 10 years to accrue; thus, the United States Preventive Services Task Force (USPSTF) recommends against screening in patients with a life expectancy of less than 10 years. Furthermore, USPSTF guidelines explicitly state that lung cancer screening with low-dose computed tomography should be discontinued if a health problem substantially limits life expectancy or the ability to have curative lung surgery. This patient's severe ischemic cardiomyopathy and oxygen-dependent COPD severely limit his life expectancy and make him a prohibitive surgical risk, rendering all cancer screening inappropriate.

Adım Adım Çözüm

1
Evaluate the patient's baseline eligibility for cancer screening based on age and risk factors.
The patient is 73 years old with a 55 pack-year smoking history, which traditionally qualifies him for lung (LDCT) and colorectal cancer screening under standard guidelines.
Identifying baseline age and risk-factor eligibility is the necessary first step before applying clinical modifiers.
2
Assess the patient's overall health status, life expectancy, and ability to undergo definitive treatment if cancer is found.
The patient has end-stage cardiopulmonary disease (LVEF 25%, NYHA III HF, COPD on continuous oxygen). His life expectancy is likely less than 5 years, and he is not a candidate for major surgical interventions like lung resection or colectomy.
Preventive screening is only beneficial if the patient will live long enough to realize the mortality benefit and is well enough to tolerate the required treatments.
3
Apply guideline-specific exclusion criteria to the identified screening tests.
Guidelines explicitly state to discontinue colorectal cancer screening if life expectancy is < 10 years, and to discontinue lung cancer screening if the patient cannot have curative lung surgery. Therefore, screening should be withheld.
Recommending screening in this scenario exposes the patient to the immediate harms and anxieties of testing without any plausible long-term benefit.

Anahtar Kavram

Cancer screening must be discontinued in patients with a substantially limited life expectancy (e.g., < 10 years for colorectal cancer) or those who are not candidates for curative surgical interventions due to severe comorbid conditions.
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Preventive Care and Screening

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