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  Indian J Med Microbiol
 

Figure 16: (a-d) Cerebral angiogram showing the dominant occipital sinus and circular sinus (a). Note that bilateral transverse sinuses are atretic. (b and d) Vertebral angiogram showing posterior circulation Injury to such a dominant occipital sinus can cause devastating hemorrhage and venous infarction. (c) Tumor receiving blood supply from the ascending pharyngeal artery

Figure 16: (a-d) Cerebral angiogram showing the dominant occipital sinus and circular sinus (a). Note that bilateral transverse sinuses are atretic. (b and d) Vertebral angiogram showing posterior circulation Injury to such a dominant occipital sinus can cause devastating hemorrhage and venous infarction. (c) Tumor receiving blood supply from the ascending pharyngeal artery