title: [The Case of a Patient with Invasive Lobular Carcinoma with Solitary Metastasis in Pectoralis Major Muscle].
abstract: A 44 -year-old woman presented at the outpatient department with a chief complaint of swelling in the right breast. MRI showed a huge breast tumor accompanied by solitary enhanced masses in the pectoralis major muscle. After receiving neoadjuvant chemotherapy, she underwent mastectomy (Halsted operation) and axillary dissection. Pathological examination revealed an E-cadherin-positive infiltrating lobular carcinoma (ILC), and the absence of residual tumor in the muscle was confirmed. In cases of solitary metastasis in the muscle, treatment selection is sometimes difficult. Further research is needed to determine whether surgery contributes to local control in cases of advanced ILC with muscle metastasis.
authors.affiliation: Dept. of General Surgery, Graduate School of Medicine, Chiba University.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Iwase
authors.forename: Takafumi
authors.initials: T
authors.lastname: Sangai
authors.forename: Masahiro
authors.initials: M
authors.lastname: Sakakibara
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nagashima
authors.forename: Takahito
authors.initials: T
authors.lastname: Masuda
authors.forename: Emi
authors.initials: E
authors.lastname: Ishigami
authors.forename: Shouko
authors.initials: S
authors.lastname: Hayama
authors.forename: Junta
authors.initials: J
authors.lastname: Sakakibara
authors.forename: Masaru
authors.initials: M
authors.lastname: Miyazaki
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000473:pathology / Q000601:surgery*; D018275:Carcinoma, Lobular / Q000601:surgery*; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis; D008279:Magnetic Resonance Imaging; D008408:Mastectomy