Identifying an Ectopic Parathyroid Adenoma Using 4DCT in a Pediatric Patient with Persistent Primary Hyperparathyroidism

Table 1

Intraoperative PTH values via venous sampling during second surgical exploration.

Sample number	Location	PTH value
1	Left high internal jugular vein	200.8
2	Left mid internal jugular vein	207.0
3	Left low internal jugular vein	219.9
4	Left innominate vein	280.3
5	Right high internal jugular vein	241.1
7	Right low internal jugular vein	231.9
8	Right innominate vein	234.0
9	Superior vena cava	316.7
10	Right atrium	203.5
11	High IVC	140.8
12	Mid IVC	166.8
13	Low IVC	176.3