Utility of 3-Month Surveillance F-18 FDG PET/CT in Surgically Resected Oral Squamous Cell Carcinoma

作者：Marquardt Michael^*; Anderson Carryn; Ginader Timothy; Parkhurst Jessica; Pagedar Nitin; Bayon Rodrigo; Clamon Gerald; Hoover Andrew; Buatti John

来源：Annals of Otology, Rhinology and Laryngology, 2018, 127(3): 185-191.

DOI：10.1177/0003489417751474

• head and neck squamous cell carcinoma
• miscellaneous
• radiotherapy
• head and neck pathology
• chemoradiotherapy
• PET-CT

Objectives: To evaluate the performance of surveillance F-18 fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) 1 year after imaging in oral squamous cell carcinoma (OSCC) patients treated with definitive surgery and adjuvant (chemo)radiotherapy (RT).
Methods and Materials: Surveillance PET/CT accuracy was retrospectively evaluated in OSCC patients receiving surgical resection and (chemo)RT. Pathologic risk factors were assessed for influence on accuracy of the post-RT PET/CT.
Results: Fifty-four patients with median follow-up of 3.8 years met inclusion criteria. A PET/CT obtained a median of 3.4 months after RT revealed 11 (20.4%) instances of true disease recurrence: 4 locoregional alone, 6 distant alone, and 1 patient with locoregional and distant disease. Locoregional detection sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were 55.6%, 75.0%, 33.3%, and 88.2%, respectively. For distant recurrence, the respective values were 100%, 95.2%, 77.8%, and 100%. Absence of bone invasion, absence of pT4 disease, and disease within the tongue were independently associated with higher sensitivity (P = .048). Perineural invasion was associated with increased specificity (P = .027), and tumor location in the tongue was associated with a higher PPV (P = .007) on surveillance PET/CT.
Conclusions: Post-RT PET/CT accuracy information for surgically managed OSCC patients demonstrates significant associations with pathologic factors.

• 出版日期2018-3