Percutaneous indirect lymphography with a new experimental contrast medium: a preliminary report

Area of Science:

• Veterinary medicine
• Radiology
• Lymphatic imaging

Background:

• Percutaneous lymphography is a technique used to visualize lymphatic vessels.
• Tetraiodoisophthalic acid-bis-oxyethylester is a contrast agent that has been investigated for its potential use in lymphography.

Purpose of the Study:

• To evaluate the efficacy of percutaneous indirect lymphography using tetraiodoisophthalic acid-bis-oxyethylester in canine subjects.
• To assess the lymphatic and lymph node visualization capabilities of the contrast agent.

Main Methods:

• A suspension of tetraiodoisophthalic acid-bis-oxyethylester (120-480 mg I/ml) was administered via percutaneous injection.
• Injections were performed into the testicles, mammary glands, and uterine cervix of mongrel dogs.
• Lymphatic and lymph node filling were observed immediately and within minutes post-injection.

Main Results:

• The contrast agent was rapidly absorbed by the lymphatic system from the injection sites.
• Excellent and immediate visualization of lymphatic vessels and regional lymph nodes was achieved.
• A localized inflammatory reaction was observed at the injection sites.

Conclusions:

• Percutaneous indirect lymphography with tetraiodoisophthalic acid-bis-oxyethylester demonstrates effective lymphatic visualization in canine models.
• The observed inflammatory response currently restricts the application of this technique to experimental animal research.
• Further research may be needed to mitigate inflammatory side effects for potential clinical use.