Abstract
Reticulum cell sarcomas occur in all age groups, in both cylindrical and flat bone, but tumors in the tibia, were rarely seen in patients over seventy years of age. Authors have treated a patient, seventy four years old female, with reticulum cell sarcoma of tibia. The patient had noticed local swelling, redness and pain at the middle of lower leg three months before being seen by the authors. There were inflammatory signs, such as local swelling, redness, pain and tenderness at the middle of right lower leg. Local radiolucency with irregular border at the middle of tibia was seen on X-ray. Blood sedimentation rate only elevated moderately in laboratory findings. Therefore, the diagnosis of acute osteomyelitis was made from laboratory data, clinical and X-ray findings. However, malignant bone tumor was suspected soon after surgery began. After the pathologist confirmed this suspicion, wide resection of tibia was performed. Pathological diagnosis was reticulum cell saroma of the tibia, and fracture of tibia at operative region occured a week after surgery. Kuntcher's medullary nail, bone cement and metal mesh were used for the reconstructive surgery of the tibia. Chemotherapy of malignant tumor was continued after the surgery. Now, ten months after surgery, the patient is being seen once a week at outpatient unit and is very well, both clinically and roentgenographically.