Pantopaque pulmonary embolism during myelography

Area of Science:

• Radiology
• Neurology
• Pulmonary Medicine

Background:

• Myelography is an imaging procedure used to visualize the spinal canal.
• Pantopaque (iofendylate) was historically used as a contrast agent for myelography.
• Pulmonary embolism is a serious condition where an artery in the lungs becomes blocked.

Observation:

• This report details a specific case of Pantopaque pulmonary embolism occurring during myelography.
• Previous cases of venous intravasation of Pantopaque have been documented.
• These prior instances were consistently associated with a traumatic lumbar puncture.

Findings:

• A mechanism is proposed linking a bloody lumbar tap to venous intravasation.
• Venous intravasation of Pantopaque can lead to its entry into the pulmonary circulation.
• This process is postulated as the cause of Pantopaque pulmonary embolism during myelography.

Implications:

• Understanding this mechanism can help prevent serious complications during myelography.
• Awareness of the association between traumatic taps and embolism is crucial for procedural safety.
• This case highlights the importance of careful technique in contrast-enhanced spinal imaging.