What is the reason for a tumor in the abdomen

If you do not pay attention to your eating and living habits, there will be latent viruses in your body. Tumors can occur in any part of the body, and abdominal sarcoma is one of the manifestations. Most abdominal sarcomas are fibromas. Because the food we usually eat is greasy and spicy, they easily gather together and form lipomas. Although this type of sarcoma is painless, it must be removed in time to avoid development into a malignant tumor.

Abdominal tumors mainly include abdominal wall tumors, gastric cancer, colorectal cancer, small intestine tumors, liver cancer, biliary tumors, pancreatic tumors, spleen tumors, peritoneal and retroperitoneal tumors, gastrointestinal pancreatic neuroendocrine system tumors, etc.

Benign tumors of the abdominal wall include desmoid tumors, fibromas, neurofibromas, hemangiomas, papillomas, dermoid cysts, etc. Malignant tumors include fibrosarcoma, dermatofibrosarcoma protuberans, melanoma, skin cancer and metastatic cancer. The main ones are described below.

Clinically, it manifests as a painless oval mass in the abdominal wall that is hard and grows slowly. In most patients, the tumor is discovered when it is several centimeters in diameter. When the abdominal muscles contract, the outline of the tumor can still be clearly felt, which can be distinguished from intra-abdominal tumors. In a few patients who delay seeking medical treatment, the tumor grows in a sheet-like infiltrative manner, with large areas of abdominal wall stiffness and a diameter of up to 10 centimeters.

The tumors often originate from the muscle sheath or aponeurosis of the rectus abdominis, external oblique muscle, internal oblique muscle, or transverse abdominal muscle, and grow infiltratively into the muscle. The tumor has no capsule, irregular edges, and is crab-foot-shaped; the texture is tough like rubber; the cross-section is grayish white and has an interlaced woven appearance. Under the microscope, the tumor is composed of abundant collagen fibers and fewer fiber cells arranged in parallel; the cells have no atypia and nuclear division phase; at the edge of the tumor, small islands of striated muscle tissue surrounded by the tumor can often be seen. The tumor tissue morphology is benign, but it is very easy to recur. This disease is more common in young and middle-aged people. The tumor usually arises in the dermis and appears as a raised area. Microscopically, the tumor is composed of spindle cells, which vary in length and thickness, and are mostly arranged in a storiform or whorl pattern. Some cells may have more significant atypia, and nuclear division phases are rare. It is a low-grade malignant tumor.

Treatment should be surgical resection. The scope includes the tumor and the normal muscles, fascia and aponeurosis nearby. If the peritoneum is involved, it should also be partially removed. Incomplete resection can easily lead to recurrence. If the abdominal wall defect is large after tumor resection, it can be repaired by turning over the adjacent anterior rectus abdominis sheath and thigh fascia lata, or by using silk or polyester patch to prevent the formation of incisional hernia. When the tumor is too extensive to be removed, radiation therapy may be tried.