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Cutaneous necrosis induced by acenocoumarol
M Valdivielso1, I Longo, M Lecona
1Servicio de Dermatología, Hospital 'Gregorio Marañón', Madrid, Spain.
Summary
Oral anticoagulants can cause rare skin necrosis. A protein C deficiency in an obese patient receiving acenocoumarol led to extensive cutaneous necrosis, highlighting a genetic predisposition.
Area of Science:
- Dermatology
- Hematology
- Pharmacology
Background:
- Cutaneous necrosis is a rare complication of oral anticoagulant therapy.
- Pathogenesis theories involve local factors and transient hypercoagulable states.
- Genetic factors, such as deficiencies in protein C or S, are implicated.
Observation:
- Presents a case of an obese woman who developed extensive cutaneous necrosis while on acenocoumarol for deep venous thrombosis.
- The patient was diagnosed with a heterozygous protein C deficiency.
- Histopathology revealed vessel thrombi, red blood cell extravasation, and leucocytoclastic vasculitis in initial lesions.
Findings:
- Heterozygous protein C deficiency can predispose patients to warfarin-induced skin necrosis.
- Clinical presentation and histopathological findings are consistent with anticoagulant-induced cutaneous necrosis.
- Leucocytoclastic vasculitis may be an early indicator of this complication.
Implications:
- Highlights the importance of considering genetic coagulation factor deficiencies in patients experiencing adverse reactions to oral anticoagulants.
- Suggests that screening for protein C deficiency may be beneficial in select patient populations.
- Emphasizes the need for further research into the precise mechanisms linking anticoagulant therapy, genetic factors, and cutaneous necrosis.