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Increased lead absorption and lead poisoning from a retained bullet
The Journal of the Oklahoma State Medical Association
|February 1, 1989
Summary
A retained bullet in a joint can cause lead poisoning years later. Prompt surgical removal of intra-articular projectiles is recommended to prevent lead intoxication.
Area of Science:
- Toxicology
- Orthopedic Surgery
- Radiology
Background:
- Lead projectiles retained in soft tissues can lead to chronic toxicity.
- Delayed diagnosis of lead poisoning is possible when the source is an overlooked projectile.
Observation:
- A young man presented with elevated blood lead and erythrocyte protoporphyrin levels seven years post-injury.
- Radiographs revealed a .22 caliber bullet in the foot, with significant changes in its appearance over time.
- The patient underwent surgical debridement, leading to partial resolution of lead intoxication.
Findings:
- Retained lead projectiles, particularly within joint spaces, undergo slow disintegration.
- This disintegration process accelerates lead absorption, posing a risk of delayed-onset lead poisoning.
- Surgical removal of the bullet improved the patient's lead intoxication symptoms.
Implications:
- Intra-articular lead projectiles are a significant risk factor for long-term lead poisoning.
- Early and complete removal of bullets lodged in joints is crucial to prevent chronic toxicity.
- This case highlights the importance of considering retained projectiles in the differential diagnosis of unexplained lead poisoning.