Nightingale Pathophysiology Practice Test

What is the defining pathologic feature common to all forms of leukemia?

Uncontrolled proliferation of malignant leukocytes leading to overcrowding of the bone marrow Increased production of platelets Hypercoagulability Decreased red blood cell production only

Correct Answer:

Decreased red blood cell production only

Explanation:

The defining feature of leukemia is the uncontrolled, malignant proliferation of leukocytes that fills and crowds the bone marrow. This rapid expansion disrupts normal hematopoiesis, so patients commonly develop anemia from reduced red blood cell production and often have low platelets due to marrow crowding. The 핵 event isn’t just a decrease in one cell line—it’s the overgrowth of abnormal white cells that suppresses all normal blood cell formation. Options that talk about increased platelets or a general hypercoagulable state aren’t the defining hallmark, and describing it as “decreased red blood cell production only” misses the central process of leukemic leukocytes overtaking the marrow and altering multiple cell lines.

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