Thromboembolism in COVID-19 Patient with Unilateral Congenital Absent ICA with Intracranial Aneurysm: First Case Report (preprint)

We here discuss an interesting case of COVID-19 patient suffering from ruptured right supra-clinoid intracranial aneurysm with congenital absence of right ICA. COVID-19 has been responsible for over 175 million reported cases and over 3.8 million deaths world-wide. Severe cases of COVID-19 is characterized with cytokine outburst and hyperinflammation, platelet activation, endothelial dysfunction and sepsis related coagulopathy. This predisposes for thromboembolic events and aneurysm formation and rupture. Agenesis, aplasia and hypoplasia of internal carotid artery (ICA) is a rare congenital anomaly. ICA agenesis is associated with increased incidence of intracranial aneurysm as compared with general population.