Um quisto de Baker complicado

Introduction: The authors with the presentation of this case study intended to draw attention to a situation of difficult diagnosis by mimicking different pathologies. Case Description: The clinical case reports that occurred in a sixty-seven year old women with a Baker’s cyst (also known as popliteal cyst) of atypical characteristics and with an unusual complication. It was a very voluminous Baker’s cyst appearing with extension for leg, simulating one deep venous thrombosis, two years after a total knee arthroplasty for knee osteoarthritis treatment and had an infection as a complication. Comment: The authors describe the difficulties in diagnosis that this rare presentation brought up in the patient’s assessment, and the implications in the reevaluation of the functionality of the arthroplasty.