11C-acetate PET/CT in pre-therapeutic lymph node staging in high-risk prostate cancer patients and its influence on disease management - a retrospective study

EJNMMI Research

Table 5 Distribution of suspected distant metastases and incidental findings

Localisation of suspected pathology	Number of PET + lesions	Number of CT + lesions	CT appearance	Pathology unrelated to prostate cancer	Number of patients	Σ distant metastases
Paraaortal LN	6 (mean SUV_max 5.8 g/ml)	6 (mean short axis 13 mm)	Oval-rounded shape		6	6 (4 solitary, 2 conglomerates)
Mediastinal/hilar LN	8 (mean SUV_max 3.7 g/ml)	8 (mean short axis 10 mm)	Oval-rounded shape		8	8 (6 solitary, 2 conglomerates)
Axillary LN	1 (SUV_max 9.0 g/ml)	1 (short axis 10 mm)	Rounded shape		1	1
Cervical LN	2 (mean SUV_max 5.6 g/ml)	2 (mean short axis 10 mm)	Rounded shape		1	2 (2 conglomerates)
Skeletal	20 (mean SUV_max 7.1 g/ml)	20	Sclerotic		4	20
Liver	1 (SUV_max 14.3 g/ml)	1	Hypoattenuating mass	HCC	1	-
Kidney	1 (SUV_max 14.2 g/ml)	1	Heterogeneous mass	RCC	1	-
Σ	39	39			22^a	37

^aSix patients with multiple sites, in total 14 with suspected distant metastases, and two with incidental findings. HCC, hepatocellular carcinoma; RCC, renal cell carcinoma.