Dilator technique – an option for mole treatment I am often asked by parents how to treat large moles. Are skin implants good or not? In fact, skin implantation is the basic skill of plastic surgery. The effect of skin implantation varies from person to person depending on the body type, however, the color of the skin piece that is said to be alive is different from the surrounding tissues, generally the color of the skin piece will be slightly darker than the surrounding normal skin, showing a light brown color, and the skin must be taken from other parts of the body, so other parts of the body will inevitably leave a scar. The dilator technique involves embedding a dilating capsule around the lesion and injecting water into the capsule periodically, the normal skin around the lesion will be expanded. After a 2-3 month water injection period, the dilator can be removed, the mole can be excised, and the expanded normal skin can be used for repair. The advantage of this is that the normal skin is used to repair the mole area with exactly the same color and texture, leaving no scarring on the rest of the body. So does it mean that the expander technique can completely replace the skin implant technique? The answer is no, because there are some special areas around which expander may not be buried, and there are some areas where the nevus lesions are so large that even if the expander is buried, the defect cannot be repaired, so although the effect of skin grafting is inferior to expander technique, it is still an indispensable treatment. The color difference after implantation is certainly more desirable aesthetically than that of nevus. At the same time, nevus has the possibility of malignant transformation, but after implantation, this worry can be dispensed with. The expander technique treatment is divided into 3 phases, the first phase, expander implantation, which takes 2 weeks, the second phase, water injection period twice a week, which takes 2 months, and the third phase, expander removal, removal and repair of the nevus, which takes 2 weeks. Therefore, the treatment takes about 3 months in total, with 2 hospitalizations.