title: Ochronosis in the breast.
abstract: A patient who had masses in the breasts clinically suggestive of neoplasia had fibrous mastopathy and striking deposition of ochronotic pigment within the soft tissue of the breast. The gross appearance and light microscopic features are illustrated. The histochemical features of ochronotic pigment and the difficulty in differentiating it from melanin are discussed.
mesh_terms: D001158:Arteries / Q000473:pathology; D001940:Breast / Q000098:blood supply / Q000473:pathology*; D001941:Breast Diseases / Q000473:pathology*; D003238:Connective Tissue / Q000473:pathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D009130:Muscle, Smooth / Q000473:pathology; D009794:Ochronosis / Q000473:pathology*; D010860:Pigments, Biological / Q000032:analysis
chemical_list: D010860:Pigments, Biological