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Soumen Bhattacharyya: Microangiopathic Hemolytic Anemia Is Often a Hematologic Clue to Underlying Malignancy
Soumen Bhattacharyya/LinkedIn
Mar 17, 2026, 17:43

Soumen Bhattacharyya: Microangiopathic Hemolytic Anemia Is Often a Hematologic Clue to Underlying Malignancy

Soumen Bhattacharyya, College Teacher in the Department of Physiology at RBC College for Women, shared on LinkedIn:

”Microangiopathic Hemolytic Anemia (MAHA) is more than a lab diagnosis—it’s often a clinical signal of an underlying systemic process, and sometimes, a hidden malignancy.

One particularly important association is with metastatic carcinoma, especially mucin-secreting adenocarcinomas (classically stomach and breast, but also pancreas, lung, and prostate).

What’s the mechanism?
Tumor-derived mucin activates the coagulation cascade – formation of microvascular thrombi – red blood cells get mechanically sheared as they pass through these vessels.

This results in:

  • Fragmented RBCs (schistocytes)
  • Intravascular hemolysis
  • Thrombocytopenia

On peripheral smear, schistocytes appear as irregular, jagged RBC fragments—formed when red cells are literally ‘ripped apart’ in the circulation.

Clinical and lab features:

  • Moderate to severe anemia (often abrupt onset)
  • Thrombocytopenia
  • High LDH, high indirect bilirubin
  • Haptoglobin
  • Possible hemoglobinuria

Why this matters
MAHA may precede the diagnosis of malignancy or indicate advanced disease.

Recognizing this pattern early can change outcomes.

Key takeaway
Mucin – coagulation activation – microthrombi – RBC fragmentation – MAHA

Always respect the peripheral smear—it often provides the earliest clue to a much bigger diagnosis.”

Soumen Bhattacharyya: Microangiopathic Hemolytic Anemia Is Often a Hematologic Clue to Underlying Malignancy

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