The length from the part of venae jugularis externa up 2.0 cm above collarbone to the middle part of venae cava superior is 13 .8+ 2.9cm on the left side and 11.5+ 1.8cm on the right side.

 
  • 颈外静脉距锁骨上方2.;0cm处至上腔静脉中段之间长度;左侧13
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