Intracystic administration of Tc-99m colloid particles to study retention and drainage in lymphangioma of the neck.

The particular use of lymphoscintigraphy to document retention and drainage in cystic lymphangioma of the neck is reported. Radionuclide examination using Tc-99m colliod particles, performed before sclerosing treatment with tetracycline in a patient with a large lymphangioma located in the neck, demonstrated a satisfactory tumor retention and slow outflow, enabling the administration of tetracycline without (risk of) organ toxicity. The treatment was successfully performed.