Acute Promyelocytic Leukemia Clinical Presentation
- Author: Sandy D Kotiah, MD; Chief Editor: Emmanuel C Besa, MD more...
History
The majority of signs and symptoms of acute promyelocytic leukemia (APL) are also seen with the other cases of acute myelogenous leukemia (AML). These include fatigue, weakness, and dyspnea related to anemia; easy bruising or bleeding caused by thrombocytopenia or coagulopathy; and fever and infection related to leukopenia. Most cases present as pancytopenia. About 10-30% of cases present with leukocytosis.[5]
Acute promyelocytic leukemia (APL) differs from AML in that most patients present with coagulopathy. The coagulopathy has been described as DIC with associated hyperfibrinolysis. Acute promyelocytic leukemia (APL) has been associated with low levels of plasminogen, alpha2-plasmin inhibitor, and plasminogen activator inhibitor 1 found in fibrinolytic states. There is increased expression of annexin II, a receptor for plasminogen and plasminogen-activating factor, on the surface of leukemic promyelocytes.[6] This leads to overproduction of plasmin and fibrinolysis.
It is important to treat the coagulopathy as a medical emergency. In 40% of untreated patients, pulmonary and cerebral hemorrhages can occur. It takes 5-8 days for coagulopathy to improve with treatment.
Physical
The physical examination can reveal pallor, petechiae, and areas of ecchymoses. There can be bleeding from the gums. A flow murmur can be heard with severe anemia. Patients can present with neurologic deficits or headaches if there is central nervous system (CNS) involvement.
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