title: Primary chest wall abscess mimicking a breast tumor that occurred after blunt chest trauma: a case report.
abstract: Primary chest wall abscess occurring after blunt chest trauma is rare. We present the case of a 50-year-old woman who presented with a swelling in her left breast. The patient had experienced blunt chest trauma 2 months back. Needle aspiration revealed pus formation in the patient's chest. Computed tomography revealed a mass in the lower region of the left mammary gland, with thickening of the parietal pleura and skin and fracture of the fifth rib under the abscess. Following antibiotic administration and irrigation of the affected region, surgical debridement was performed. During surgery, we found that the pectoralis major muscle at the level of the fifth rib was markedly damaged, although the necrotic tissue did not contact the mammary gland. We diagnosed the lesion as a chest wall abscess that occurred in response to blunt chest trauma. Her postoperative course was uneventful. There has been no recurrence for six months after surgery.
authors.affiliation: Department of Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan.
authors.forename: Yusuke
authors.identifier: 0000-0003-0050-4340
authors.initials: Y
authors.lastname: Yamaoka
authors.affiliation: Department of Surgery, Breast and Endocrine Surgery, Sakai City Hospital, 1-1-1 Minamiyasuicho, Sakai-ku, Sakai-shi, Osaka 590-0064, Japan.
authors.forename: Jun
authors.identifier: 0000-0002-5540-7348
authors.initials: J
authors.lastname: Yamamura
authors.affiliation: Departments of Surgery and Breast Oncology, National Hospital Organization Osaka National Hospital, 2-15, Yamadaoka, Suita-shi, Osaka 565-0871, Japan.
authors.forename: Norikazu
authors.initials: N
authors.lastname: Masuda
authors.affiliation: Departments of Surgery and Breast Oncology, National Hospital Organization Osaka National Hospital, 2-15, Yamadaoka, Suita-shi, Osaka 565-0871, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yasojima
authors.affiliation: Departments of Surgery and Breast Oncology, National Hospital Organization Osaka National Hospital, 2-15, Yamadaoka, Suita-shi, Osaka 565-0871, Japan.
authors.forename: Makiko
authors.initials: M
authors.lastname: Mizutani
authors.affiliation: Department of Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Nakamori
authors.affiliation: Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan.
authors.forename: Toru
authors.initials: T
authors.lastname: Kanazawa
authors.affiliation: Department of Radiology, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Kuriyama
authors.affiliation: Department of Central Laboratory and Surgical Pathology, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Mano
authors.affiliation: Department of Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka 540-0006, Japan.
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Sekimoto