In our life, “a thousand people have a thousand faces” means a thousand people have a thousand faces and a thousand people have a thousand minds. In Water Margin, there is also the phrase of “people have a thousand faces, each face has its own momentousness”. I borrowed this phrase because I think it is perfect to describe abdominal wall tumors with “a thousand faces”. As we know, abdominal wall is a multi-layered and multi-structured tissue, which contains various components such as skin, fat, muscle, fascia, peritoneum, fibrous connective tissue, blood vessels, lymphatic vessels, nerves, etc. Therefore, there are many kinds of abdominal wall tumors. For example, there are melanoma and augmentation dermatofibrosarcoma in skin, lipoma in fatty tissue, rhabdomyosarcoma and rhabdomyosarcoma in deep layer of muscle origin, sclerofibroma in fibrous tissue origin, hemangioma in vascular origin, lymphangioleioma in lymphatic vessel origin, nerve sheath tumor and neurofibroma in nerve origin, etc. Isn’t it a bit complicated! It is not easy for doctors to identify this tumor and that tumor among the whole bunch! For example, lipoma is a benign tumor of adipose tissue origin, while liposarcoma is a malignant tumor; rhabdomyosarcoma is benign, while rhabdomyosarcoma is malignant. Of course there are some exceptions, such as melanoma, whose name ends with tumor, but it is actually a malignant tumor of melanocyte origin in the skin, and a benign tumor of melanin production that everyone has, which is a nevus. Melanoma is less prevalent in our yellow population, but much more prevalent in the white population. Intersecting tumors are those whose biological behavior is between benign and malignant, such as sclerofibroma of the abdominal wall. It is not over yet, malignant tumors also include two major categories, primary, which are those originating from the cells and tissues of the abdominal wall itself, and secondary, which are metastases from other sites, such as digestive tract malignancies that most often metastasize to the abdominal wall at the umbilical orifice, also known as abdominal wall metastatic tumors. Some patients are found to be metastatic tumors only after hard masses are found in the abdominal wall, then they are found to be metastatic tumors through surgical resection and pathological examination, and the primary lesions in the abdominal cavity are only traced through other examinations of the abdomen according to the pathological classification, such as stomach cancer, intestinal cancer, pancreatic cancer or ovarian cancer, etc. Because of the complexity of the abdominal wall components, the difference in benign and malignant tumors, and the differences in clinical manifestations of various tumors, I would like to use the term “thousand faces” to describe abdominal wall tumors. Therefore, it would be impossible for me to explain to you in hundreds of Chinese words today. Therefore, the main purpose of today is to give you a general idea, and please listen to the later part of the article for the specific common ones. The treatment of abdominal wall tumors varies, but the basic principle is surgery. For benign tumors, local excision is sufficient, that is, how big the tumor is, how big the tumor can be “dug out”; while malignant tumors are not enough, although each tumor needs to be excised to a different extent, for example, rhabdomyosarcoma needs to remove the entire muscle where the tumor is located, and augmentation dermatofibrosarcoma needs to remove 3cm of tissue around the tumor, but the principle is still similar – that is, the tumor needs to be removed. The principle is similar – that is, an extended resection is done to avoid recurrence of the tumor. However, even with an extended excision, the general characteristic of abdominal wall malignancies is still prone to recurrence, and thus there are few patients who have repeated multiple surgeries. In addition to surgery, some malignancies require radiotherapy, and recent discoveries of some targeted therapeutic agents suggest significant inhibition of certain abdominal wall malignancies.