Double Trouble—Concurrent Giant Cell Tumor in Femur and Fibula: A Rare Case Report

Case DesCriptionA 20-year-old female patient was referred to our department after presenting with a persistent and progressive pain in her left knee and enlarging lump around her left popliteal knee, which was not accompanied by redness or an increase in local temperature for approximately 3 months.The pain initially appeared after she slipped and fell down with her knee bumped to the ground.The pain was described as a sharp, stabbing, and intensified during physical activities, particularly while walking upstairs or downstairs, and transitioning from a sitting to standing position.She reported that rest would help to alleviate the pain, and she denied the presence of any other related symptoms, such as redness, swelling, or locking of the knee joint at the initial stages.Furthermore, she reported unintentional weight loss of 3 kg over the past 3 months with intermittent episodes of fever, primarily during periods of high activity or fatigue.Fever