Infantile polycythemia is seen in –

In pediatrics, polycythemia is usually secondary to chronic hypoxia. Secondary causes of pediatric polycythemia Cyanotic congenital heart disease                                          o Brain tumor (Cerebellar hematzgioma) Chronic pulmonary disease --> Cystic fibrosis                    o Cushing disease High altitude                                                                              o Hydronephrosis Renal tumor Causes of neonatal polycythemia Twin-twin transfusion                                                              o Trisomy 93,18 or 21 Maternal-fetal transfustion                                                      o Adrenogenital syndrome Chronic intrauterine hypoxia  o Neonatal Graves disease Delayed clamping of umblical cord                                       o Hypothyroidism Infant of diabetic mother         o Beckwith-wiedemann syndrome Infant of a hypertensive mother or these on propranolol