Arterial thrombosis in essential thrombocythemia.

Area of Science:

• Hematology
• Vascular Medicine

Background:

• Essential thrombocythemia (ET) is a myeloproliferative neoplasm characterized by elevated platelet counts.
• The clinical manifestations and complications of ET can vary, with thrombosis being a significant concern.

Purpose of the Study:

• To describe the clinical course and management of essential thrombocythemia in a cohort of ten patients.
• To investigate the prevalence of arterial thrombosis versus hemorrhage in observed ET cases.
• To evaluate the efficacy of busulfan in treating ET-related complications.

Main Methods:

• Retrospective observation of ten ET patients (ages 46-83) over 4 months to 9 years.
• Clinical assessment of presenting complaints and development of arterial occlusive events.
• Monitoring of platelet counts and therapeutic response to busulfan treatment.

Main Results:

• Arterial thrombosis was more common than hemorrhage, contrary to existing literature.
• Six patients presented with incipient gangrene of the toes; several developed further arterial occlusions.
• Busulfan treatment led to clinical improvement and normalization of platelet counts in patients with gangrene.
• Five patients relapsed but responded well to busulfan retreatment.
• No patient progressed to other myeloproliferative disorders.

Conclusions:

• Essential thrombocythemia should be considered in the differential diagnosis of arterial occlusive disease.
• Busulfan is an effective treatment for managing ET-related arterial complications.
• The observed higher incidence of arterial thrombosis warrants further investigation.