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Neuroradiology

, Volume 51, Issue 4, pp 265–271 | Cite as

18F-FDG PET/CT findings of sinonasal inverted papilloma with or without coexistent malignancy: comparison with MR imaging findings in eight patients

  • Tae Yeon Jeon
  • Hyung-Jin KimEmail author
  • Joon Young Choi
  • In Ho Lee
  • Sung Tae Kim
  • Pyoung Jeon
  • Keon Ha Kim
  • Hong Sik Byun
Head and Neck Radiology

Abstract

Introduction

Sinonasal inverted papilloma (IP) is known for high rate of associated malignancy. The purpose of this study was to identify 18F-FDG PET/CT findings of sinonasal IPs. We also tried to compare the PET/CT findings with the MR imaging findings.

Methods

We retrospectively reviewed PET/CT and MR images of eight patients with sinonasal IP with (n = 6) or without (n = 2) coexistent squamous cell carcinoma (SCC). Particular attention was paid to correlate the PET/CT findings with the MR imaging findings in terms of area distribution of standard uptake values (SUVs) and a convoluted cerebriform pattern (CCP).

Results

In two benign IPs, the maximum SUVs measured 8.2 and 7.8, respectively (mean, 8.0). In both tumors, MR images demonstrated a diffuse CCP. In six IPs with coexistent SCC, the maximum SUVs ranged from 13.3 to 31.9 (mean ± SD, 20.2 ± 6.6). In these tumors, MR images demonstrated a diffuse CCP in two, a partial CCP in three, and no CCP in one. A wide discrepancy was noted between MR imaging and PET/CT in terms of area distribution of a CCP and SUVs.

Conclusion

In sinonasal lesions with MR imaging features of IP, 18F-FDG PET/CT demonstrating avid FDG uptake does not necessarily imply the presence of coexistent malignancy. In our small series, although IPs containing foci of SCC had consistently higher SUVs than IPs without SCC, the limited literature on this subject suggests that PET cannot be used reliably to make the distinction.

Keywords

Positron-emission tomography/CT Magnetic resonance imaging Sinonasal neoplasm Inverted papilloma 

Notes

Conflict of interest statement

We declare that we have no conflict of interest.

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Tae Yeon Jeon
    • 1
  • Hyung-Jin Kim
    • 1
    Email author
  • Joon Young Choi
    • 2
  • In Ho Lee
    • 1
  • Sung Tae Kim
    • 1
  • Pyoung Jeon
    • 1
  • Keon Ha Kim
    • 1
  • Hong Sik Byun
    • 1
  1. 1.Department of Radiology, Samsung Medical CenterSungkyunkwan University School of MedicineKangnam-KuSouth Korea
  2. 2.Department of Nuclear Medicine, Samsung Medical CenterSungkyunkwan University School of MedicineSeoulSouth Korea

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