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  • A case of sternal osteomyel...
    Abe, Kaori; Shimoda, Masafumi; Yoshinami, Tetsuhiro; Sota, Yoshiaki; Miyake, Tomohiro; Tanei, Tomonori; Kagara, Naofumi; Naoi, Yasuto; Shimazu, Kenzo

    Surgical case reports, 01/2022, Letnik: 8, Številka: 1
    Journal Article

    Background Everolimus is a mechanistic-target-of-rapamycin (mTOR) inhibitor bearing a potent antitumor effect against hormone receptor-positive breast cancer. Here, we report the case of a patient with recurrent breast cancer who developed osteomyelitis during the treatment with everolimus plus exemestane. Case presentation A 56-year-old woman with early-stage breast cancer underwent right mastectomy and axillary lymph node dissection at the age of 45. Four years after the surgery, she experienced relapse at the chest wall. Radiotherapy was performed on the chest wall, including the sternum, and denosumab was administered. After several regimens of hormonal therapies, everolimus in combination with exemestane was administered. Three months later, the patient visited our clinic because of continuous fever. A computed tomography scan showed an osteolytic change in the sternal bone with pneumomediastinum, which indicated sternal osteomyelitis. Extensive debridement followed by secondary reconstruction of the chest wall was successfully performed. Conclusions Everolimus may cause osteomyelitis of the affected bone as a result of tumor necrosis. Everolimus-induced osteomyelitis may be manageable by extensive debridement performed without delay.