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Table 1 Differential diagnosis of blue toe syndrome

From: Blue toe syndrome caused by emboli from anomalous left atrial septal pouch thrombus: a case report

Emboli from cardiac and arterial system

Hypercoagulability

disorders

Peripheral vascular pathology

Left atrial septal pouch

Atrial fibrillation

Left ventricular aneurysm

Cholesterol crystal

Penetrating ulcers or Aneurysms of the aorto-iliac-femoral arterial system

Cardiac/vascular tumors (myxoma)

Valvular heart disease

Endocarditis

Iatrogenic injury

Antiphospholipid syndrome

Malignancy

Thrombocytopenic purpura

Disseminated intravascular coagulation

Warfarin skin necrosis

Cryoglobulinemia

Myeloproliferative disorders

Raynaud’s phenomenon

Perniosis

Frostbite

Infectious and noninfectious inflammation

Medication-induced vasoconstriction