Results: The vertebral venous plexus, external jugular vein, verterbral vein, deep cervical vein, pharyngoesophageal venous plexus were all enlarged and dyed black.

• 结果：椎管静脉丛，颈外静脉，椎静脉，颈深静脉和咽食管静脉丛等明显充盈和染色。