A rare case of pericardial monophasic synovial sarcoma detected on [18F]FDG PET/CT

Document Type : Case Report

Authors

1 Department of Nuclear Medicine, Goztepe Prof. Dr. Süleyman Yalçın City Hospital, Kadıköy, Istanbul, Turkey

2 Ministry of Health, Ankara, Turkey

Abstract

We present a rare case of pericardial monophasic synovial sarcoma detected on fluorine-18 fluorodeoxyglucose ([18F]FDG) positron emission tomography/computed tomography (PET/CT) and contrast-enhanced CT. Primary cardiac tumors are extremely rare, with an incidence of approximately 0.02%, and are about 20 times less common than secondary tumors. Cardiac synovial sarcomas are exceedingly rare, and pericardial synovial sarcoma represents one of the least common forms of primary cardiac sarcoma, with its true incidence remaining uncertain. In such cases, multimodality imaging is recommended. As illustrated in our case, contrast-enhanced CT helps delineate the tumor’s dimensions, its relationship to vascular structures, and its proximity to adjacent organs, while [18F]FDG PET/CT provides metabolic characterization and assessment of metastatic spread. Together, these modalities contribute substantially to treatment decision-making, surgical planning, post-treatment surveillance, and early detection of recurrence.

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References

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