Neuroblastoma does not have any precursors. The disease can occur in the adrenal medulla, abdominal sympathetic ganglion, sympathetic ganglion in the chest and other parts of the body, and the manifestations of neuroblastoma occurring in different parts of the body are also different. 1. Adrenal medulla: Neuroblastoma occurring in the adrenal medulla may present with irritability, rapid heart rate and other precursors in the early stage. 2. Abdominal sympathetic ganglion: Neuroblastoma occurring in abdominal sympathetic ganglion may have precursors such as abdominal distension and abdominal pain in the early stage, and an abdominal mass may appear after the tumor increases in size. 3. Sympathetic ganglion in chest: neuroblastoma patients located in sympathetic ganglion in chest may have cough, shortness of breath, dyspnea and other signs. Patients with the above signs need to go to the local hospital as soon as possible, so as to clarify or exclude the diagnosis as soon as possible, and actively cooperate with the doctor to prevent the delay of the disease.