Details of Ten 18F-FDG– and Tumor-Positive Patients in Whom PET/CT, but Not Side-by-Side PET and CT, Led to Change in Therapy
| Patient no. | PET | CT/MRI | Sonography | Tx change by PET/CT | Histology | TG level PreOp/PostOp (ng/mL) | Reduction of tumor volume (%) |
|---|---|---|---|---|---|---|---|
| 1 | 1× cerv lat L | 1× ln cerv lat L | 1× ln cerv lat L | Wire-guided extension of surg to retrotracheal | 1× lnmet cerv lat | 11.2/<1.0 | 100 |
| 1× lat trachea | No corr | No corr | 1× lnmet lat trachea 5 mm | ||||
| 2 | 1× supracl L | 1× ln supracl L | 1× ln supracl L | Extension of surg to supracl R | 1× lnmet supracl L | 5.6/<1.0 | 100 |
| 1× supracl R | No corr | No corr | 1× lnmet supracl R 9 mm | ||||
| 3 | 1× cerv lat L | 1× ln cerv lat L | 1× ln cerv lat L | Extension of surg to mediast and supracl R+L | 1× lnmet cerv | 27.3/4.39 | 80 |
| 1× supracl R+L | No corr | No corr | lnmet supracl L+R | ||||
| 1× upper mediast | No corr | No corr | 1× lnmet mediast 10 mm | ||||
| 4 | 2× cerv L | No corr | No corr | Extension of surg parapharyng | 2× lnmet cerv (1 × 9 mm) | 16.7/6.2 | 80 |
| 5 | 2× upper cerv R | No corr | No corr | Extension of surg to upper | 2× lnmet upper cerv R | 74/3.8 | 90 |
| 1× lower cerv R | 1× ln low cerv R | 1× ln low cerv R | cerv and mediast | 1× lnmet cerv R | |||
| 1× upper mediast | No corr | No corr | 1× lnmet mediast (8 mm) | ||||
| 6 | 1× supracl R | No corr | No corr | Wire-guided surg supracl R | 2× lnmet supracl R 3+4 mm | 3.3/<1.0 | 100 |
| 7 | 1× cerv dorsal L | No corr | No corr | Extension of surg to L neck | 1× lnmet L neck 6 mm | 5.2/<1.0 | 100 |
| 8 | 1× cerv lat R | 1× ln cerv lat R | 1× ln cerv lat R | Extension of surg retrotracheal | 1× lnmet | 2.9/<1.0 | 100 |
| 1× lat trachea | No corr | No corr | 1× lnmet lat trachea | ||||
| 9 | 1× supracl L | No corr | No corr | Extension of surg supracl L | 1× lnmet supracl L | 20.5/7.8 | 60 |
| 1× lat trachea | Soft-tissue paratra | Soft-tissue paratra | Local recurr paratra | ||||
| 10 | 1× mediast | No corr | No corr | Extension of surg mediast | 1× lnmet mediast | 167/25.9 | 50 |
| 1× lat trachea | Soft-tissue paratra | Soft-tissue paratra | Local recurr paratra |
Tx = treatment; cerv = cervical; lat = lateral; L = left; ln = suspicious lymph node on CT or sonography; lnmet = lymph node metastasis; no corr = no correlation; surg = surgery; supracl = supraclavicular; R = right; mediast = mediastinal; parapharyng = parapharyngeal; PreOp = preoperative; PostOp = postoperative; paratra = paratracheal; recurr = recurrence.