title: [Two cases of HER2-positive advanced or metastatic breast cancer, responding to lapatinib and capecitabine].
abstract: The first patient was a 59-year-old woman who was diagnosed with invasive scirrhous carcinoma. The tumor was estrogen receptor (ER)-positive, progesterone receptor (PgR)-positive, and human epidermal growth factor receptor 2 (HER2)-positive. The patient was treated with adjuvant chemotherapy and endocrine therapy after surgery. Liver metastases developed 5 years after surgery. She was treated with trastuzumab combined with vinorelbine, paclitaxel, or docetaxel. The liver metastases increased in size, 9 years after surgery, and she was treated with lapatinib and capecitabine. The efficacy of chemotherapy was judged as a partial response. The second patient was a 74-year-old woman who was diagnosed with invasive ductal carcinoma in 2005. The tumor was ER-negative, PgR-positive, and HER2-positive; she was treated with trastuzumab and paclitaxel. She developed dyspnea in January 2010. Chest radiograph showed increased lung metastases and left pleural effusion; she was treated with lapatinib and capecitabine. Lung metastases decreased and left pleural effusion disappeared after the first cycle of chemotherapy. The efficacy of chemotherapy was judged as a partial response.
authors.affiliation: Dept. of Surgery, Osaka General Medical Center.
authors.forename: Yukio
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Toyokazu
authors.initials: T
authors.lastname: Aono
authors.forename: Masaya
authors.initials: M
authors.lastname: Nomura
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Iwase
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Tanaka
mesh_terms: D002293:Adenocarcinoma, Scirrhous / Q000188:drug therapy* / Q000473:pathology; D000368:Aged; D000964:Antimetabolites, Antineoplastic / Q000008:administration & dosage; D000970:Antineoplastic Agents / Q000008:administration & dosage; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D014408:Biomarkers, Tumor / Q000032:analysis*; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000473:pathology; D000069287:Capecitabine; D018270:Carcinoma, Ductal, Breast / Q000188:drug therapy* / Q000473:pathology; D003841:Deoxycytidine / Q000008:administration & dosage / Q000031:analogs & derivatives; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage / Q000031:analogs & derivatives; D006801:Humans; D000077341:Lapatinib; D008175:Lung Neoplasms / Q000556:secondary; D008197:Lymph Node Excision; D008408:Mastectomy; D008875:Middle Aged; D011799:Quinazolines / Q000008:administration & dosage; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis*
chemical_list: D000964:Antimetabolites, Antineoplastic; D000970:Antineoplastic Agents; D014408:Biomarkers, Tumor; D000069287:Capecitabine; D003841:Deoxycytidine; D005472:Fluorouracil; D000077341:Lapatinib; D011799:Quinazolines; D018719:Erb-b2 Receptor Tyrosine Kinases; C508053:ERBB2 protein, human