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Japanese Journal of Radiology
Published in: Japanese Journal of Radiology 9/2017

01-09-2017 | Original Article

Detection of unexpected emergency diseases using FDG-PET/CT in oncology patients

Authors: Akira Toriihara, Emi Yamaga, Masashi Nakadate, Jun Oyama, Ukihide Tateishi

Published in: Japanese Journal of Radiology | Issue 9/2017

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Abstract

Purpose

To evaluate the frequency of emergency diseases that were detected unexpectedly using FDG-PET/CT.

Materials and methods

Interpretation reports for 11,663 FDG-PET/CT studies in our hospital were retrospectively reviewed. Patients with major emergency diseases were extracted according to the following exclusion criteria: (1) relevant findings had been recognized prior to the PET/CT; (2) an intervention or operation that may have been relevant to the present findings was performed within 1 month prior to the PET/CT; and (3) the clinical course could not be investigated sufficiently (e.g., in cases where the patients were introduced from other hospitals).

Results

Forty-one patients (0.35%) with unexpected emergency diseases were identified. The most frequent disease was pneumothorax (8 patients), followed by chronic subdural hematoma (CSH) (7 patients), ureteral stone (7 patients), and abdominal aortic aneurysm (AAA) with a dirty fat sign or a high-attenuation crescent sign visualized on CT (4 patients). Nine patients (2 pneumothorax, 3 CSH, 1 cerebral hemorrhage, 1 acute cholecystitis, 1 acute pancreatitis, and 1 acute appendicitis) were hospitalized and/or underwent therapeutic intervention within 1 week after the PET/CT.

Conclusion

Although rare, an unexpected emergency disease requiring urgent management can be detected using FDG-PET/CT in oncology patients.
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Metadata
Title
Detection of unexpected emergency diseases using FDG-PET/CT in oncology patients
Authors
Akira Toriihara
Emi Yamaga
Masashi Nakadate
Jun Oyama
Ukihide Tateishi
Publication date
01-09-2017
Publisher
Springer Japan
Published in
Japanese Journal of Radiology / Issue 9/2017
Print ISSN: 1867-1071
Electronic ISSN: 1867-108X
DOI
https://doi.org/10.1007/s11604-017-0664-5

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