1.Dermal hemangioma and classification Cutaneous hemangioma is a common congenital disease in infants and is a benign tumor of the blood vessels of the skin. Skin hemangiomas can be classified as simple hemangioma, capillary nevus and cavernous hemangioma according to the depth of the skin area where they are located and their clinical characteristics. Simple hemangiomas are also called prune-like hemangiomas because they look like prunes and occur mainly due to the proliferation and expansion of capillaries in the skin. They are often found on the face, neck, and trunk, and are usually the size of a pea to a prune. Capillary nevi, also known as erythematous nevi or grape-like nevi, are often found shortly after birth and are more common on the face and neck. They are usually scattered or distributed in patches or geoglyphs. Small ones are only the size of a pinpoint, while large ones can involve the whole arm and torso. Capillary nevi often appear as bright red or purplish-red patches of different sizes and shapes, with a smooth surface that fades when pressed by hand and regains its original color when relaxed. Spongiform hemangioma is a kind of deep skin hemangioma. Most of them are found in the trunk and are often the size of a pigeon’s egg to an egg, with a light blue surface. It is named after the spongy feeling when pressed. In general, the local skin temperature of spongy hemangioma is often higher than the surrounding skin temperature. 2.Treatment methods There are many treatment methods for cutaneous hemangioma, mainly including: radioactive beta ray treatment (phosphorus-32 and strontium-90), laser treatment, cryotherapy, superficial radiation treatment, oral hormone treatment and local sclerotherapy, etc. Specialized applicator is more effective in treating cutaneous hemangioma, and the treatment method is simple and easy to operate, painless to patients, and generally does not leave scars or damage the appearance of their skin after treatment, and is widely popular for cutaneous hemangioma in patients of all age groups. Our department adopts the multiple small-dose method: one patch is applied every three months, and each time the patching time is different according to the clinical performance and age. The amount of irradiation is 100-300 rads each time, and the total dose is 600-1500 rads. 3.Radionuclide dressing treatment mechanism The isotope phosphorus-32 decay radiates pure β-rays with short range, high ionization density and strong ionization ability, and its direct irradiation can inhibit the proliferation of capillaries in local skin tissue, destroy skin lesions and atrophy or even occlude local microvessels, thus achieving the effect of treating local superficial skin capillary hemangioma without causing deep tissue and adjacent tissue damage. The treatment of local superficial skin capillary hemangioma can be achieved without causing damage to deep tissue and adjacent tissues. 4.Treatment effect Since 1973, our department started to use radioisotope P-32 special applicator to treat cutaneous hemangioma, and so far we have treated more than 20,000 cases and achieved good effect. 2000, for 699 cases of simple hemangioma and 490 cases of nevus, we found that the treatment with phosphorus-32 special applicator had good effect on simple hemangioma and nevus. The cure and basic cure rates were 80,1% and 40,4% respectively, and the efficiency rates were 96,5%, 86,1%, and 80,2% respectively. According to various data, the treatment effect of infants and young children is better, followed by that of children, and the treatment effect of adults is not good. Therefore, the treatment of cutaneous hemangioma (including simple hemangioma and nevus) with isotope phosphorus-32 is better in the early stage, and the treatment effect is better.