Polyposis is the modern medical equivalent of varicose ulcers, or what we commonly call old rotten legs. Patients often have venous insufficiency of the lower extremities, which is often accompanied by skin dystrophy of the foot and boot due to venous insufficiency, manifested by skin pigmentation, skin itching (eczema formation), and chronic skin ulcers (also known as pollicoria). Venous insufficiency is the cause of ulcers, so treatment of the cause is important, but for deep vein lesions such as thrombosis or backflow in the deep veins, general surgery is not the answer, and most of these patients can only be treated conservatively, but the likelihood of ulcers is still very high. In this case, the patient had a previous surgery and an ulcer, the skin had been broken for more than a year, and the skin of the lower leg was obviously dystrophic, which made treatment difficult. The wound was located on the left medial ankle, with an area of about 5×4 cm. The exudation was obvious, but some skin islands could be seen on the posterior margin. This picture was taken on October 29, 2008, after one month of treatment. This is a little less than 2 months after treatment, you can see the skin islands fusing with each other and the wound looks much smaller! Slow healing is a characteristic of polyposis and is also a difficult area to treat. taken on November 11, 2008. After 6 months of treatment, the wound has basically healed, but a small ulcer of less than 1 cm2 remains, and the original ulcer is still clearly visible. Six months is not a short time, but after all, it is slowly getting better. During this process, the doctor and the patient cooperate with each other, without arrogance.