Multiple nodules 3 centimeters visible in the abdominal cavity and retroperitoneum may be caused by infections, tumors, and other causes. Multiple nodules 3 centimeters visible in the abdominal cavity and retroperitoneum may be caused by infection, due to bacterial, viral, tuberculosis and other infections caused by the abdominal cavity and retroperitoneum appearing multiple nodules 3 centimeters, can be under the guidance of the doctor orally cefixime, cefdinir and other medications for treatment, if the effect of drug treatment is not satisfactory, can be treated by laparoscopic resection. Abdominal cavity and retroperitoneum visible multiple nodules 3 cm may also be caused by tumors, abdominal cavity and retroperitoneum appear multiple nodules, may be due to the presence of tumors resulting in multiple nodules enlarged 3 cm, if benign tumors can be treated by local tumor resection, if malignant tumors need to find the primary lesion first, and then radical surgery to remove the tumor. Therefore, when the abdominal cavity and retroperitoneum can be seen multiple nodules of 3 centimeters, you should go to the hospital as soon as possible to clarify the cause of the disease, and carry out standardized treatment under the guidance of the doctor.