Tumors originating from other parts of the body, primarily malignant, that spread to the bones through various routes and continue to grow there, forming metastatic tumors. This type of tumor occupies a certain proportion in pediatric bone tumors and often leads to symptoms such as bone pain, weakness, and muscle atrophy in children.

Pediatric paralysis is a disease caused by infection with the polio virus.

Pediatric viral facial paralysis may be epilepsy. It is recommended to undergo an EEG examination to assist in diagnosis. The main symptoms include behavioral abnormalities accompanied by seizures, and in severe cases, consciousness impairment. Carbamazepine tablets can be used for treatment, and gamma knife treatment may be necessary. It is advisable to avoid spicy and irritating foods.

Phenylketonuria is a common amino acid metabolism disorder caused by enzyme defects in the phenylalanine metabolism pathway, leading to the accumulation of phenylalanine and its metabolites. Phenylketonuria can cause severe damage to the central nervous system and also affect a child’s growth and development. It is recommended to seek treatment early, with medication as the main treatment method.

Renal osteodystrophy is a skeletal disease primarily caused by metabolic abnormalities.

Renal rickets is a relatively common disease in infancy, which may be caused by a calcium-phosphorus metabolic disorder due to a deficiency of vitamin D.

Rotavirus enteritis is a common childhood illness that primarily affects infants and young children aged 6 months to 2 years, causing diarrhea symptoms.

Sertoli cell hypoplasia, also known as Klinefelter’s syndrome, is a genetic disorder caused by chromosomal abnormalities, often leading to underdeveloped testes, sexual dysfunction, and infertility.

Spondylolysis is a congenital condition where the vertebral lamina does not fully close after birth, leaving a cleft on the spine.

Tetralogy of Fallot is a common congenital heart defect in children, characterized by ventricular septal defect, pulmonary stenosis, transposition of the great arteries, and hypertrophy of the right ventricle.