Incidental Findings on FDG PET/CT in Head and Neck Cancer

Christopher J. Britt, Austin M. Maas, Tabassum A. Kennedy, Gregory K. Hartig

Research output: Contribution to journalArticle

Abstract

Objective: 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG PET/CT) imaging is common in head and neck cancer and often identifies incidental findings that necessitate additional patient evaluations. Our goal was to assess the frequency and nature of these incidental imaging findings on FDG-PET/CT. Study Design: Retrospective cohort study. Setting: Tertiary medical center. Subjects and Methods: All patients with head and neck cancer who had undergone FDG-PET/CT imaging between January 2014 and June 2015 at our institution were evaluated for incidental findings. Results: A total of 293 patients met criteria; more than one-third (n = 103) had at least 1 finding unrelated to their head and neck cancer, for a total of 134 incidental findings. Incidental findings within the head and neck (33.5% of all) excluding the thyroid were most common: 35% incidental findings were concerning for malignancy; of these, 25.5% were malignant with further workup. Recommendations were given by the head and neck radiologist on 72 (53.7%) findings: 74.5% of potentially malignant findings and 42.5% of benign findings had recommendations for follow-up. Significantly more patients with findings described as malignant were given recommendations for follow-up (P =.0004). Conclusion: Incidental findings on FDG-PET/CT are present in more than one-third of patients with head and neck cancer. More than one-third of incidental findings were concerning for malignancy. This study illustrates how the incidental findings discovered on FDG PET/CT frequently necessitate additional evaluations unrelated to the index head and neck cancer. The impact of these additional assessments on the cost and quality of health care warrants future evaluation.

Original languageEnglish (US)
Pages (from-to)484-488
Number of pages5
JournalOtolaryngology - Head and Neck Surgery (United States)
Volume158
Issue number3
DOIs
StatePublished - Mar 1 2018

Fingerprint

Incidental Findings
Head and Neck Neoplasms
Glucose
Neck
Head
Positron Emission Tomography Computed Tomography
Quality of Health Care
Neoplasms
Thyroid Gland
Cohort Studies
Retrospective Studies
Costs and Cost Analysis

Keywords

  • CT
  • findings
  • head and neck cancer
  • imaging
  • incidental
  • PET
  • PET/CT

ASJC Scopus subject areas

  • Surgery
  • Otorhinolaryngology

Cite this

Incidental Findings on FDG PET/CT in Head and Neck Cancer. / Britt, Christopher J.; Maas, Austin M.; Kennedy, Tabassum A.; Hartig, Gregory K.

In: Otolaryngology - Head and Neck Surgery (United States), Vol. 158, No. 3, 01.03.2018, p. 484-488.

Research output: Contribution to journalArticle

Britt, Christopher J. ; Maas, Austin M. ; Kennedy, Tabassum A. ; Hartig, Gregory K. / Incidental Findings on FDG PET/CT in Head and Neck Cancer. In: Otolaryngology - Head and Neck Surgery (United States). 2018 ; Vol. 158, No. 3. pp. 484-488.
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abstract = "Objective: 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG PET/CT) imaging is common in head and neck cancer and often identifies incidental findings that necessitate additional patient evaluations. Our goal was to assess the frequency and nature of these incidental imaging findings on FDG-PET/CT. Study Design: Retrospective cohort study. Setting: Tertiary medical center. Subjects and Methods: All patients with head and neck cancer who had undergone FDG-PET/CT imaging between January 2014 and June 2015 at our institution were evaluated for incidental findings. Results: A total of 293 patients met criteria; more than one-third (n = 103) had at least 1 finding unrelated to their head and neck cancer, for a total of 134 incidental findings. Incidental findings within the head and neck (33.5{\%} of all) excluding the thyroid were most common: 35{\%} incidental findings were concerning for malignancy; of these, 25.5{\%} were malignant with further workup. Recommendations were given by the head and neck radiologist on 72 (53.7{\%}) findings: 74.5{\%} of potentially malignant findings and 42.5{\%} of benign findings had recommendations for follow-up. Significantly more patients with findings described as malignant were given recommendations for follow-up (P =.0004). Conclusion: Incidental findings on FDG-PET/CT are present in more than one-third of patients with head and neck cancer. More than one-third of incidental findings were concerning for malignancy. This study illustrates how the incidental findings discovered on FDG PET/CT frequently necessitate additional evaluations unrelated to the index head and neck cancer. The impact of these additional assessments on the cost and quality of health care warrants future evaluation.",
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N2 - Objective: 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG PET/CT) imaging is common in head and neck cancer and often identifies incidental findings that necessitate additional patient evaluations. Our goal was to assess the frequency and nature of these incidental imaging findings on FDG-PET/CT. Study Design: Retrospective cohort study. Setting: Tertiary medical center. Subjects and Methods: All patients with head and neck cancer who had undergone FDG-PET/CT imaging between January 2014 and June 2015 at our institution were evaluated for incidental findings. Results: A total of 293 patients met criteria; more than one-third (n = 103) had at least 1 finding unrelated to their head and neck cancer, for a total of 134 incidental findings. Incidental findings within the head and neck (33.5% of all) excluding the thyroid were most common: 35% incidental findings were concerning for malignancy; of these, 25.5% were malignant with further workup. Recommendations were given by the head and neck radiologist on 72 (53.7%) findings: 74.5% of potentially malignant findings and 42.5% of benign findings had recommendations for follow-up. Significantly more patients with findings described as malignant were given recommendations for follow-up (P =.0004). Conclusion: Incidental findings on FDG-PET/CT are present in more than one-third of patients with head and neck cancer. More than one-third of incidental findings were concerning for malignancy. This study illustrates how the incidental findings discovered on FDG PET/CT frequently necessitate additional evaluations unrelated to the index head and neck cancer. The impact of these additional assessments on the cost and quality of health care warrants future evaluation.

AB - Objective: 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG PET/CT) imaging is common in head and neck cancer and often identifies incidental findings that necessitate additional patient evaluations. Our goal was to assess the frequency and nature of these incidental imaging findings on FDG-PET/CT. Study Design: Retrospective cohort study. Setting: Tertiary medical center. Subjects and Methods: All patients with head and neck cancer who had undergone FDG-PET/CT imaging between January 2014 and June 2015 at our institution were evaluated for incidental findings. Results: A total of 293 patients met criteria; more than one-third (n = 103) had at least 1 finding unrelated to their head and neck cancer, for a total of 134 incidental findings. Incidental findings within the head and neck (33.5% of all) excluding the thyroid were most common: 35% incidental findings were concerning for malignancy; of these, 25.5% were malignant with further workup. Recommendations were given by the head and neck radiologist on 72 (53.7%) findings: 74.5% of potentially malignant findings and 42.5% of benign findings had recommendations for follow-up. Significantly more patients with findings described as malignant were given recommendations for follow-up (P =.0004). Conclusion: Incidental findings on FDG-PET/CT are present in more than one-third of patients with head and neck cancer. More than one-third of incidental findings were concerning for malignancy. This study illustrates how the incidental findings discovered on FDG PET/CT frequently necessitate additional evaluations unrelated to the index head and neck cancer. The impact of these additional assessments on the cost and quality of health care warrants future evaluation.

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