title: Duodenal metastasis from male breast cancer: a case report and review of the literature.
abstract: BACKGROUND
  Breast cancer is the most frequent type of tumor and the second leading cause of death in women. Metastases are present in nearly 60% of cases at the time of diagnosis with the lymph nodes, skeleton, lungs, brain and liver as the most frequent sites of metastases. Gastrointestinal involvement is rare, present in only 10% of all the cases. There is a very low risk of developing breast cancer in men.
  
  
  METHODS
  A 68-year-old man, with a past history of ductal breast cancer, presented with duodenal obstruction. Medical treatment was attempted without success, so he underwent surgery with subtotal gastrectomy and resection of the first portion of the duodenum. Histological examination showed a duodenal metastasis originating from the previous carcinoma of the breast. Five months after surgery, the patient is alive and well.
  
  
  CONCLUSIONS
  Gastrointestinal metastases should be considered in patients with a past history of breast cancer. Surgical treatment should be performed in patients who are symptomatic and in good general condition. To our knowledge this is the only case of a gastrointestinal metastasis from breast carcinoma in a man.
authors.forename: Alberto Bruno
authors.initials: AB
authors.lastname: Ferrari
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Pulcini
authors.forename: Federico
authors.initials: F
authors.lastname: Gheza
authors.forename: Alessandro
authors.initials: A
authors.lastname: Vinco
authors.forename: Stefania
authors.initials: S
authors.lastname: Manenti
authors.forename: Edoardo
authors.initials: E
authors.lastname: Cervi
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Villanacci
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Cervi