title: Tumor-to-tumor metastasis: maxillary sinus adenoid cystic carcinoma metastasizing to double primary lung adenocarcinoma.
abstract: Tumor-to-tumor metastasis is a rare occurrence. The most frequent metastatic donor is lung cancer, and the most frequent recipient is renal cell carcinoma. Here we present a patient in whom lung cancer served as a metastatic recipient and maxillary sinus adenoid cystic carcinoma acted as a metastatic donor. This patient has double primary lung cancer, which increased the complexity of this case.
authors.affiliation: Division of Thoracic Surgery, Department of Surgery, Taipei-Veterans General Hospital, Taipei, Taiwan.
authors.forename: Wei-Yang
authors.initials: WY
authors.lastname: Lin
authors.forename: Wen-Hu
authors.initials: WH
authors.lastname: Hsu
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology* / Q000601:surgery; D008444:Maxillary Sinus Neoplasms / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011013:Pneumonectomy