F-18 FDG PET/CT and Tc-99m Sulfur Colloid SPECT imaging in the diagnosis and treatment of a case of dual solitary fibrous tumors of the retroperitoneum and pancreas

Authors

  • Javad Azadi
  • Andrea Subhawong
  • Daniel James Durand

DOI:

https://doi.org/10.3941/jrcr.v6i3.904

Keywords:

Solitary Fibrous Tumor, SFT, Sarcoma, FDG, PET/CT, Tc-99m, SPECT

Abstract

Although FDG PET is increasingly used for the staging of many types of sarcoma, little has been written regarding the FDG PET imaging characteristics of solitary fibrous tumor. We report a patient undergoing FDG PET/CT surveillance for squamous cell carcinoma of the tongue who was incidentally found to have two soft tissue masses in the retroperitoneum and pancreatic tail. Due to their low degree of FDG avidity, they were followed conservatively for approximately one year as they gradually increased in size. Technetium-99m sulfur colloid SPECT helped confirm that the pancreatic tail mass was not a splenule, after which both lesions were surgically resected and found to be extrathoracic solitary fibrous tumors without malignant features. These findings suggest that, as with other low-grade sarcomas, benign extrathoracic solitary fibrous tumors exhibit relatively little glycolytic metabolism in vivo.

Author Biographies

Javad Azadi

Third Year Medical Student at the Johns Hopkins University School of Medicine

Andrea Subhawong

Clinicial Fellow in Pathology at the Johns Hopkins University School of Medicine

Daniel James Durand

Instructor and Fellow in Radiology at the Johns Hopkins University School of Medicine
Journal of Radiology Case Reports March 2012 issue - Breast Fibromatosis Response to Tamoxifen: Dynamic MRI Findings and Review of the Current Treatment Options by Plaza et al.

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Published

2012-03-11

Issue

Vol. 6 No. 3 (2012)

Section

Nuclear Medicine / Molecular Imaging

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