| | Lymph node level IVa (qualifier value) |  |  | Lymph node level IVa |  |  | Level IVa contains the lower jugular lymph nodes located around the inferior third of the internal jugular vein from the caudal limit of level III to a limit set arbitrarily 2 centimeters cranial to the sternoclavicular joint caudally. | 
 | | Id | 1162620005 |  | Status | Primitive | 
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