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SAGE Open Med Case Rep ; 12: 2050313X241233190, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38390439

RESUMO

Breast cancer is the most diagnosed cancer among women worldwide. Cyclin dependent kinase 4/6 inhibitors (ribociclib, palbociclib, and abemaciclib) modulate endocrine resistance and are widely used treatment for patients with advanced-stage hormone receptor-positive, human epidermal growth factor receptor 2-negative breast cancer. Reports of both venous and arterial thromboembolic events, as a complication of cyclin dependent kinase 4/6 inhibitors, are increasingly recognized, but none involved cerebral venous sinus. We herein report on a 44-year-old female patient who initially presented with an early-stage breast cancer treated with surgery, chemotherapy, radiation therapy and finished 5 years of tamoxifen uneventfully. Eight years after her initial diagnosis, she relapsed with a solitary brain lesion which was resected and treated with radiation therapy, and was then started on aromatase inhibitors. Few months later, she progressed with biopsy-proven cervical and mediastinal lymph node metastasis. She was then switched to fulvestrant and ribociclib; both were well-tolerated. However, few weeks later she presented with increasing headache and mild dizziness. Imaging studies showed right lateral sinus acute non-occlusive thrombosis with no parenchymal changes. Patient was anticoagulated with low molecular weight heparin and follow-up visits showed stable disease with no bleeding.

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