Chapter 461 Secondary Polycythemia
Pathogenesis
Secondary polycythemia is diagnosed when true polycythemia is caused by a physiologic process that is not clonal in nature (see Table 461-1
on the Nelson Textbook of Pediatrics website at www.expertconsult.com). Secondary polycythemia can be congenital or acquired.
Table 461-1 DIFFERENTIAL DIAGNOSIS OF POLYCYTHEMIA
PRIMARY
SECONDARY
Congenital
ACQUIRED (NON-CLONAL)
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