|  | Cancer | Leukemia

Leukemia's Impact on Organ Systems: A Clinical Overview

Which Organ Systems Does Leukemia Affect?

Leukemia is a systemic disease. Primary targets:

1. Hematopoietic System (Blood & Bone Marrow)

  • Crowding out normal hematopoiesis → anemia, thrombocytopenia, neutropenia.
  • Circulating blasts cause hyperviscosity, leukostasis.

2. Lymphoid System

  • Lymphadenopathy, splenomegaly, thymic mass (especially ALL, CLL).
  • Impaired immune surveillance.

3. Hepatosplenic Involvement

  • Infiltration → hepatosplenomegaly, cytopenias, coagulopathy.
  • Portal hypertension in advanced cases.

4. Central Nervous System

  • CNS leukemia (ALL > AML) → cranial nerve palsies, meningeal signs, altered mental status.
  • Requires intrathecal prophylaxis/treatment.

5. Gastrointestinal Tract

  • Direct infiltration (rare) or treatment-related (mucositis, typhlitis).
  • Obstruction, perforation, bleeding.

6. Other Systems

  • Skin (leukemia cutis), kidneys (infiltration, TLS), testes (sanctuary site), eyes, heart (infiltration, anthracycline toxicity).

Multi-organ involvement underscores need for comprehensive staging and supportive care.

Leukemia - Related Articles