A Rare Case of Bilateral Pectoralis Major Muscle Defect and Abnormal Muscle

Mayuko Yamamoto; Tomonari Kunihisa; Motoi Baba; Sachiko Mizumoto; Yuji Yamashita; Mayuko Miki; Sachiko Inubushi; Aoi Okamoto; Ryuhei Fujimoto; Hirokazu Tanino

doi:10.1159/000523936

A Rare Case of Bilateral Pectoralis Major Muscle Defect and Abnormal Muscle

Case Rep Oncol. 2022 Mar 30;15(1):351-355. doi: 10.1159/000523936. eCollection 2022 Jan-Apr.

Authors

Affiliations

¹ Department of Breast Surgery, Kobe University Hospital, Kobe, Japan.
² Department of Breast Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
³ Department of Radiology, Kobe University Hospital, Kobe, Japan.
⁴ Division of Breast Surgery, Department of Surgery, Wakayama Medical University, Wakayama, Japan.

Abstract

A 56-year-old female patient with left breast cancer presented at our hospital. Preoperative CT scan showed an isolated bilateral pectoralis major muscle defect and abnormal muscle originating from the entire sternum and inserting in the lower ribs and rectus sheath. Total mastectomy and axillary lymph node dissection were performed. We believe that this case is unique and that others like it have never been reported. If there is a defect in the pectoralis major muscle, reconstructive surgery with a tissue expander is contraindicated. Therefore, preoperative evaluation of the chest wall musculature on imaging is recommended.

Keywords: Abnormal muscle; Pectoralis major muscle defect; Reconstruction.

Publication types

Case Reports