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Case Reports
. 2021 Sep 1;46(9):e451-e453.
doi: 10.1097/RLU.0000000000003603.

Delayed PET/CT of Pericardial Synovial Sarcoma

Antonella Stefanelli  1 , Giordano Savelli  2 , Mattia Bonacina  1 , Alberto Zaniboni  3
Affiliations
Case Reports

Delayed PET/CT of Pericardial Synovial Sarcoma

Antonella Stefanelli et al. Clin Nucl Med. .

Abstract

Pericardial synovial sarcoma is a rare malignancy. We report the case of a patient who was referred to our institution for a large pericardial effusion requiring pericardiocentesis. CT imaging revealed an inhomogeneous pericardial mass beside the right atrium, and then a PET/CT scan was performed. Standard images were inconclusive whether delayed images showed an FDG-avid pericardial lesion that was surgically removed with histological diagnosis of a poorly differentiated biphasic synovial sarcoma. When considering mediastinal or pericardial mass, a delayed PET/CT may improve lesion-to-background contrast by reducing blood pool activity.

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Conflict of interest statement

Conflicts of interest and sources of funding: none declared.

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