METE, Berne Dirim İzmir Atatürk Training and Research Hospital - Clinic of Radiology, Turkey , GÜRSOY, Merve Izmir Ataturk Training and Research Hospital - Clinic of Radiology, Turkey , RESNICK, Donald University of California - Veterans Affairs Medical Center - Department of Radiology, USA

Diagnosis and differential diagnosis of para-articular chondroma of popliteal fossa: A very rare location

14942

Para-articular chondroma is a benign chondroid tumor which is frequently seen in the infrapatellar fat pad of the knee. We report a para-articular chondroma case located in the popliteal fossa which is very uncommon. Eighty-two-year-old male was presented to the department of orthopedics with a history of chronic pain and swelling at the popliteal fossa of his right knee. The patient was investigated using the following techniques; plain radiograph and MRI which gave an impression of a benign para-articular chondroma arising from the popliteal fossa. Radiographically, a well-delinated mass with spherical calcifications in the popliteal fossa was detected on the X-ray of the knee. On MRI, isointense signal intensity with adjacent muscles on T1-weighted TSE sequence and heterogeneous high signal intensities suggestive of chondroid matrix and oedema on fat-supressed T2-weighted sequence were detected. On postcontrast images peripheral enhancement in the chondroid lobules which was typical for chondroma was seen. After surgical resection, histopathological examination revealed para-articular chondroma

145

Chondroma , soft tissue neoplasms , magnetic resonance imaging , knee

Ege Journal Of Medicine

147