The first symptoms of skin cancer

Everyone has heard of skin cancer, right? So what are the first symptoms of skin cancer? Although the incidence of skin cancer in my country is very low, it is one of the common malignant tumors in the white race, and the incidence of skin cancer is increasing. It is necessary to understand the early symptoms of skin cancer.

1. Squamous cell carcinoma is more common in people aged 30 to 50, while basal cell carcinoma is more common in people over 50. The former develops quickly and often grows rapidly in a short period of time; the latter is slow. Squamous cell carcinoma is more common in the lower lip, tongue, nose, vulva, and at the junction of the skin and mucous membranes. The ulcer has a high edge, is red and hard, and is ring-shaped and cauliflower-like in appearance. The surrounding inflammatory reaction is significant, and there are often regional lymphadenopathy. Basal cell carcinoma is more common in the eye socket, inner canthus, nose, cheek, forehead, and back of the hand; the ulcer has a waxy, nodular, and rolled edge, and some are black. The inflammatory reaction is mild or absent, and metastasis is very rare. It mainly infiltrates into deep tissues.
2. Squamous cell carcinoma is often transformed from keratosis, leukoplakia and other precancerous diseases. It grows fast and forms ulcers in the early stage. Some are nodular or cauliflower-shaped, with less invasion into the deep part and a movable base; some are butterfly-shaped, with more obvious infiltration into the deep part, great destructiveness, and often involving bones. Squamous cell carcinoma is often accompanied by purulent infection, accompanied by malodor and pain. Regional lymph node metastasis is common. The author encountered a huge squamous cell carcinoma in the head, which had an extremely bad odor, more purulent secretions, and easy bleeding; cervical lymph node metastasis occurred. Squamous cell carcinoma develops fastest at the junction of the mucosa and skin, and those with mucosal disease are more likely to metastasize.