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Zorluk: KolayHematology and Oncology

A 32-year-old woman comes to the clinic due to progressive fatigue and decreased exercise tolerance over the past 4 months. She has no significant past medical history and takes no medications. The patient reports having heavy menstrual periods, often soaking a pad every 2 hours during the first 3 days of her cycle. Vital signs are within normal limits. Physical examination shows mild conjunctival pallor but no jaundice or organomegaly. Laboratory studies show:

Hemoglobin: 9.8 g/dL
Mean corpuscular volume (MCV): 74 fL
White blood cell count: 6,500/mm³
Platelet count: 410,000/mm³

Which of the following is the most appropriate initial diagnostic test for this patient?

  1. Serum iron studiesCevap
  2. B
    Hemoglobin electrophoresis
  3. C
    Direct antiglobulin test
  4. D
    Vitamin B12 and folate levels
  5. E
    Bone marrow aspiration and biopsy

Cevap

Serum iron studies
The correct answer is serum iron studies. The patient presents with fatigue, conjunctival pallor, and heavy menstrual bleeding, along with laboratory evidence of a microcytic anemia (MCV < 80 fL) and reactive thrombocytosis. This clinical picture is highly suggestive of iron deficiency anemia secondary to chronic blood loss. The most appropriate initial step in the diagnostic workup of microcytic anemia is to check serum iron studies (including ferritin, iron, and total iron-binding capacity) to confirm iron deficiency before initiating therapy.

Adım Adım Çözüm

1
Classify the patient's anemia based on the laboratory values.
The patient has a hemoglobin of 9.8 g/dL and an MCV of 74 fL, indicating a microcytic anemia.
Categorizing anemia by MCV narrows the differential diagnosis to microcytic, normocytic, or macrocytic causes.
2
Correlate the laboratory findings with the clinical history.
The history of heavy menstrual bleeding strongly points to chronic blood loss as the underlying cause of the microcytic anemia.
Chronic blood loss is the leading cause of iron deficiency anemia in premenopausal women.
3
Identify the standard diagnostic workup for the suspected condition.
The most appropriate next step is to obtain serum iron studies (including ferritin, serum iron, and total iron-binding capacity).
Noninvasive iron studies are required to formally diagnose iron deficiency before initiating supplementation.

Anahtar Kavram

Evaluation of microcytic anemia and diagnosis of iron deficiency
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Konular

Hematology and Oncology

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