title: Male breast adenoid cystic carcinoma.
abstract: BACKGROUND
  Adenoid cystic carcinoma (ACC) of the breast is a rare condition, and cases in male patients are even less common.
  
  
  METHODS
  We describe a case of ACC of the breast with axillary lymph node metastasis, disseminated osteolytic bone metastasis and bone marrow involvement in a 41-year-old man.
  
  
  CONCLUSIONS
  Male breast ACC is an extremely rare malignancy; there can be difficulty in obtaining a final diagnosis. We report this case because of its rarity.
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Seung Jin
authors.initials: SJ
authors.lastname: Yoo
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Dong Seok
authors.initials: DS
authors.lastname: Lee
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Ho Suk
authors.initials: HS
authors.lastname: Oh
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Hyun Joong
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Moon Ho
authors.initials: MH
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Youg Chel
authors.initials: YC
authors.lastname: Ahn
authors.affiliation: Department of Pathology, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Gil Hyun
authors.initials: GH
authors.lastname: Kang
authors.affiliation: Department of Pathology, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Dae-Woon
authors.initials: DW
authors.lastname: Eom
authors.affiliation: Department of Laboratory Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Choong Hwan
authors.initials: CH
authors.lastname: Cha
authors.affiliation: Department of Internal Medicine, Gangneung Asan Medical Center, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Heui June
authors.initials: HJ
authors.lastname: Ahn
keywords: Adenoid cystic carcinoma; Bone metastasis; Male breast cancer