Iron deficiency in patients with cancer is often more complex than hemoglobin alone. Explore common clinical decision points around recognition, biomarker interpretation, and evolving management strategies.
6 questions
Correct Answer: A
Fatigue during cancer treatment is frequently attributed to the malignancy or therapy itself. Iron deficiency may remain underrecognized unless iron studies are reassessed, even when hemoglobin remains relatively preserved.
Auerbach M, DeLoughery TG, Tirnauer JS. Iron deficiency in adults: A review. JAMA. 2025;333(20):1813-1823. https://jamanetwork.com/journals/jama/fullarticle/2832131
When ferritin and TSAT provide conflicting information, which additional factor most influences your interpretation?
Correct Answer: B
Inflammation increases hepcidin production and may elevate ferritin independent of iron availability. Interpreting ferritin alongside TSAT and inflammatory markers helps distinguish functional from absolute iron deficiency.
Moum B, Lindgren S. Iron deficiency and iron deficiency anemia in chronic disease—Common, important, and treatable. J Clin Med. 2025;14(13):4519. https://www.mdpi.com/2077-0383/14/13/4519
Beyond correcting anemia, which patient outcome most often influences your decision to actively address iron deficiency?
Correct Answer: D
Iron deficiency can significantly impair physical function and quality of life, particularly in patients receiving cancer therapy. These patient-centered outcomes frequently influence management decisions.
Which scenario would most prompt you to broaden the discussion around IV iron therapy?
Correct Answer: C
Current recommendations support considering intravenous iron when oral therapy is ineffective, poorly tolerated, or when timely iron repletion is clinically important.
Which challenge most commonly contributes to delayed recognition of iron deficiency in oncology practice?
Symptoms such as fatigue, reduced exercise tolerance, and impaired concentration frequently overlap with cancer or treatment-related effects, making iron deficiency easy to overlook without targeted evaluation.
Which laboratory finding most strongly supports functional iron deficiency rather than absolute iron deficiency?
Functional iron deficiency reflects impaired iron availability despite adequate or increased iron stores, typically driven by inflammation-mediated hepcidin activity. This pattern — normal or elevated ferritin alongside low TSAT in the presence of inflammation — distinguishes it from absolute iron deficiency, where stores are genuinely depleted.
Pavord S, Daru J, et al. Old tests and new paradigms: How to interpret iron studies and related laboratory investigations. Clin Biochem. 2025. Available at: https://www.sciencedirect.com/science/article/pii/S0268960X25000827
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