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Quinidine-induced reactive lymphadenopathy.

R G Gay, K L Fielder, T M Grogan

The American Journal of Medicine

|January 1, 1987

Summary

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This case report details a patient experiencing enlarged lymph nodes due to quinidine medication. Discontinuing the drug led to the resolution of lymphadenopathy, indicating a drug-induced reactive condition.

Area of Science:

Immunology
Pathology
Pharmacology

Background:

Quinidine is an antiarrhythmic medication.
Lymphadenopathy can be a symptom of various conditions.

Observation:

A patient on quinidine developed extensive inguinal lymphadenopathy.
Excisional lymph node biopsy revealed atypical, reactive follicular hyperplasia.
Immunologic assessment confirmed a reactive, polyclonal B cell process.

Findings:

The patient's lymphadenopathy resolved within one month of quinidine cessation.
Histologic and immunologic findings were consistent with drug-induced reactive lymphadenopathy.
The patient remained well 15 months post-discontinuation.

Implications:

Related Experiment Videos

This case highlights quinidine as a potential cause of drug-induced lymphadenopathy.
It underscores the importance of considering medication history in diagnosing lymphadenopathy.
Early recognition and drug withdrawal can lead to complete resolution.