The Role of ^𝟏𝟏C-Choline-PET/CT-Guided Secondary Lymphadenectomy in Patients with PSA Failure after Radical Prostatectomy: Lessons Learned from Eight Cases

Table 2

Patient	PSA 1 (ng/mL)	PSA 2 (ng/mL)	PSA 3 (ng/mL)	PSA 4 (ng/mL)	Lymph nodes resected 𝑛	Lymph nodes positive 𝑛
1	6.14	0	1.38	1.6	24	3
2	5.54	0.64	1.57	0.1	3	1
3	8.56	0	0.17	0.2	17	0
4	8.32	0	1.66	1.74	5	1
5	7.62	0	2.92	1.34	20	1
6	6.94	0.53	2.93	4.1	11	0
7	5.23	0	2.43	0.66	12	1
8	9.81	0.13	1.5	0.11	1	1

PSA 1: initial PSA at time of cancer diagnosis; PSA 2: PSA after primary treatment; PSA 3: PSA at time of PET imaging; PSA 4: PSA after lymphadenectomy.