The Teaching Point

Curvilinear or rounded calcified lesions within a soft tissue mass in close vicinity of the joint should always be further investigated for the possibility of primary synovial osteochondromatosis (PSC). The imaging appearance of PSC appears sufficiently unique to allow its differentiation from other causes of intraarticular pathology.






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From the manuscript

Primary synovial osteochondromatosis of the surapatellar pouch of knee. Correlation of imaging features with surgical findings

Free full text article: Primary synovial osteochondromatosis of the surapatellar pouch of knee. Correlation of imaging features with surgical findings

Abstract
A 31 years old female presented with swelling and pain above the right knee for three years. On examination, there was a tender swelling over the right knee more pronounced over the suprapatellar region. Plain X-ray, US, CT scan and MRI of the knee were suggestive of Primary synovial osteochondromatosis (PSC) of the suprapatellar pouch. Patient underwent total synovectomy and the diagnosis of synovial osteochondromatosis was confirmed histopathologically. Recognizing the imaging appearances of PSC is important to improve patient management.






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