title: Coexisting tattoo pigment and metastatic melanoma in the same sentinel lymph node.
abstract: BACKGROUND
  The principle of sentinel lymph node states that metastatic melanoma spreads in a predictable sequential fashion from the primary site to the regional lymph node basin.
  
  
  CONCLUSIONS
  Reports show that melanoma and tattoo pigment can be in the same regional lymph node basin on gross evaluation. We present two cases of melanoma arising within the setting of a tattoo where the sentinel lymph node contained both pigmented histiocytes and metastatic melanoma on gross inspection and histopathology.
authors.affiliation: Departments of Surgery and Pathology, University of California, San Francisco, UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center at Mount Zion, San Francisco, CA 94115, USA.
authors.forename: Adnan A
authors.initials: AA
authors.lastname: Jaigirdar
authors.forename: Michael W
authors.initials: MW
authors.lastname: Yeh
authors.forename: Emile
authors.initials: E
authors.lastname: Sharifi
authors.forename: L Walden
authors.initials: LW
authors.lastname: Browne
authors.forename: Stanley P L
authors.initials: SP
authors.lastname: Leong
mesh_terms: D001365:Axilla; D004396:Coloring Agents; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology* / Q000601:surgery; D008297:Male; D008545:Melanoma / Q000556:secondary*; D008875:Middle Aged; D021701:Sentinel Lymph Node Biopsy; D012878:Skin Neoplasms / Q000473:pathology*; D013653:Tattooing
chemical_list: D004396:Coloring Agents