Hoffa's syndrome involves inflammation of the infrapatellar fat pad secondary to direct trauma or microtrauma. Alternative sources of inflammation of Hoffa's fat pad include synovial processes such as pigmented villonodular synovitis (PVNS) and osteochondromatosis. Recently, a few cases of inflammation of Hoffa's fat pad secondary to human immunodeficiency virus (HIV) have been described. Our c...

A 54-year-old female presented with intermittent pain over right shoulder off and on for 1 month. She did not recall any associated major trauma, but she was a retired teacher who frequently needed raising right shoulder for writing on blackboard. Physical examinations only showed a swelling mass about 2 × 1 cm with mild tenderness over right shoulder joint and mild limited of range of motion. ...

Background: Popliteal cysts are common and present as asymptomatic lumps in the medial popliteal fossa. Some have complex internal characteristics such as septa and loose-bodies. However, not all are popliteal cysts and can be aggressive. These lesions need to be differentiated by the absence of the communicating neck with the joint on ultrasound. Presence of Doppler flow of non-communicating c...