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Pernicious anemia revisited

R K Pruthi¹, A Tefferi

¹Division of Hematology and Internal Medicine, Mayo Clinic Rochester, MN 55905.

Mayo Clinic Proceedings

|February 1, 1994

Summary

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Pernicious anemia (PA) is a treatable hematologic disorder. Diagnosis can be challenging, but urinary methylmalonic acid levels offer a practical alternative for detecting cobalamin deficiency.

Area of Science:

Hematology
Internal Medicine

Background:

Pernicious anemia (PA) is a condition affecting various organ systems.
Patients may present with diverse symptoms or be asymptomatic.
Hematologic parameters can be normal despite cobalamin deficiency.

Purpose of the Study:

To review the pathophysiology, clinical presentation, diagnosis, and treatment of PA.
To discuss advancements in diagnostic and therapeutic approaches for PA.

Main Methods:

Literature review focusing on clinical applications and progress in PA diagnosis and treatment.
Evaluation of diagnostic methods for cobalamin deficiency, including urinary methylmalonic acid and the Schilling test.

Main Results:

Lifelong vitamin B12 therapy is essential for managing PA.

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Intramuscular administration is the customary route for vitamin B12, though alternatives exist.

Urinary methylmalonic acid is a potentially more sensitive and practical diagnostic marker.

Conclusions:

Pernicious anemia is a highly treatable hematologic condition.
Early and accurate diagnosis is crucial for effective management.