Table 3 The sites of primary tumors detected by PET-CT and the methods of obtaining biopsy to confirm/exclude their malignant nature
From: Pivotal role of PET/CT in characterization of occult metastasis with undetermined origin
Variable | Â | % |
|---|---|---|
Detection of primary lesion by PET-CT (n = 175, 100%) | Primary lesion detected by PET-CT | 60.0 |
No primary lesion detected by PET-CT | 40.0 | |
Site of primary lesion by PET-CT (n = 105, 60%) | Lung | 22.8 |
Lower GIT | 8.6 | |
Ovary | 8.6 | |
Pharynx | 5.7 | |
Pancreatic | 3.4 | |
Pleura | 2.9 | |
Upper GIT | 2.9 | |
Breast | 2.9 | |
Prostate | 1.1 | |
Kidney | 1.1 | |
Method of obtaining biopsy from primary lesion detected by PET-CT (n = 105, 60%) | CT-guided biopsy | 22.8 |
Endoscopic biopsy | 17.0 | |
Bronchoscopic biopsy | 8.6 | |
Needle biopsy | 2.9 | |
Nephrectomy | 2.9 | |
Transrectal US biopsy | 2.9 | |
US-guided biopsy | 2.9 |