What question did this study set out to answer?

To evaluate the diagnostic utility of FDG PET/CT in detecting extrathoracic distant metastases in recurrent head and neck squamous cell carcinoma and identify high-risk clinical predictors of systemic spread.

August 19, 2026Indian Journal of Nuclear MedicineOpen Access

Utility of FDG PET/CT in Restaging and Detection of Distant Metastases in Recurrent Head and Neck Carcinoma

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Authors

APAnjali PrakashVencore (United States)NPNilendu C PurandareHomi Bhabha National Institute SSSneha ShahHomi Bhabha National Institute

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Implication

Retrospective cohort study reveals high accuracy of FDG PET/CT for detecting distant metastases in recurrent head and neck carcinoma, indicating its value for restaging high-risk patients.

Key Points

To evaluate the diagnostic utility of FDG PET/CT in detecting extrathoracic distant metastases in recurrent head and neck squamous cell carcinoma and identify high-risk clinical predictors of systemic spread.
Analyzed data from N=500 patients with histopathologically confirmed recurrent head and neck squamous cell carcinoma who underwent restaging FDG PET/CT between January 2010 and June 2018.
Validated PET/CT findings using histopathology, follow-up imaging, or multidisciplinary consensus.
Evaluated clinical predictors of distant metastases—including initial TNM stage, primary site, disease-free interval, and recurrent stage—alongside the impact on clinical management.
Distant metastases were identified in 144 of 500 patients (28.8%), with 54 patients (10.8%) presenting with isolated extrathoracic metastases that altered clinical management.
FDG PET/CT demonstrated 100% sensitivity and 99.5% specificity for the detection of distant metastases.
Advanced initial TNM stage, initial nodal stage, shorter disease-free interval, and advanced recurrent stage were statistically significant predictors of distant metastases (p < 0.05).

Cite This Study

Prakash et al. (2026) studied this question.

synapsesocial.com/papers/6a85639d03308d306e2d6ec8 https://doi.org/10.25259/ijnm_71_2026

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Implication

Retrospective cohort study reveals high accuracy of FDG PET/CT for detecting distant metastases in recurrent head and neck carcinoma, indicating its value for restaging high-risk patients.

Utility of FDG PET/CT in Restaging and Detection of Distant Metastases in Recurrent Head and Neck Carcinoma

Discussion

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Implication

Key Points

Cite This Study

Utility of FDG PET/CT in Restaging and Detection of Distant Metastases in Recurrent Head and Neck Carcinoma

Discussion

Member takes

Implication

Key Points

Cite This Study

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