EN
The article reports a case of pathological fracture of the left humerus which occurred on the second postoperative day after a right-side modified radical mastectomy in patient primary diagnosed with an early stage of breast cancer. Lack of any clinical symptoms of bone metastasis were observed before surgery. The patient received operative treatment, i.e. resection of diaphyseal lesion and stabilization of the fracture with Rush rods and a plate were performed. Apart from that, bone defect was filled with concrete. In the fifth year of observation the patient feels well, there has been no recurrence of the disease detected. The left upper limb is fully mobile. The role of routine preoperative scintigraphy is discussed.