Intraventricular Synovial Sarcoma: A Case Report and Literature Review

Synovial sarcoma (SS) is a high-grade malignant neoplasm. SS is a rare cancer type, which is primarily derived from the soft tissues of the lower extremities. The head and neck region is quite an extremely rare location, particularly the ventricle.The origin of SS remains a challenge, which along with its propensity to present clinical features mimicking other neoplasms within the common site, can result in significant diagnostic difficulty.Herein, we present a case of 40-year-old male SS located in the left ventricle with information including manifestation, imaging and histopathological features.On CT, approximately 30% of cases appear detectable calcification, which may be focal or dispersed throughout the tumor, often with a fine, stippled, or opaque appearance. MRI revealed a heterogeneous expansive and multi-lobular mass involving left ventricle, with intense and heterogeneous enhancement. Tentorium was thickened and enhanced. Small cystic changes were found in the peripheral part of the tumor with no enhancement. . Radiologically, discriminating SS from other types of cancer is very difficult. Nonetheless, they should be considered in the differential diagnosis. Owing to the rarity of SS in the ventricle, misdiagnosis is commonIn summary, we report one SS in the ventricle, the unusual location, to remind the radiologist to make it come to our mind for future work.