title: Pure hibernoma of the breast: insights about its origins.
abstract: Hibernomas are rare benign tumors composed of cells reminiscent of brown adipose tissue. In the mammary gland, hibernomas are extraordinary rare, with only 4 cases reported previously. We report the fifth case in a 37-year-old woman who presented with a slowly growing mobile mass in her right breast. A 2.2 cm well-circumscribed lobulated mass was completely removed. The histopathologic analysis showed the full characteristics of the hibernoma. A review of the clinicopathologic features of hibernomas, its relation to brown adipose tissue in humans, and considerations about its histogenesis are made.
authors.affiliation: Department of Pathology, The American British Cowdray Medical Center, Mexico City DF, Mexico. apadillar@abchospital.com
authors.forename: Alvaro Lezid
authors.initials: AL
authors.lastname: Padilla-Rodriguez
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D008067:Lipoma / Q000000981:diagnostic imaging / Q000473:pathology*; D014463:Ultrasonography