Radiological changes in lead poisoning

Area of Science:

• Pediatric Toxicology
• Diagnostic Radiology
• Neuroimaging

Background:

• Childhood lead poisoning is a significant public health concern with potential for severe neurological and developmental consequences.
• Early diagnosis is crucial for effective management and prevention of long-term effects.
• Radiological findings can be indicative of lead toxicity, even in the absence of a confirmed blood lead concentration.

Observation:

• A 7-year-old girl presented with symptoms including abdominal pain, nausea, and asthenia.
• Laboratory results revealed severe hypochromic microcytic anemia, punctate basophilic stippling of erythrocytes, and a high blood lead concentration (880 µg/L).

Findings:

• Radiographs of the femur, tibia, and fibula showed dense metaphyseal bands, commonly known as "lead lines."
• Cranial computed tomography identified multiple speck-like and curvilinear hyperdensities in the subcortical regions, putamen, and left cerebellar hemisphere.

Implications:

• Characteristic imaging findings in the brain and bones can suggest lead toxicity.
• These radiological signs are valuable diagnostic clues, especially when evaluating patients with non-specific symptoms or when blood lead levels are not immediately available.
• Integrating imaging findings with clinical presentation aids in prompt diagnosis and management of pediatric lead poisoning.