title: Biliary epithelial metastasis of squamous carcinoma of the anus.
abstract: BACKGROUND
  The liver and biliary tree are common sites of initial metastasis for many primary tumors. However, we recently encountered a patient who presented with biliary-tree tumor encasement as a first metastasis from squamous carcinoma of the anus.
  
  
  METHODS
  To our knowledge, this has not been previously described in the literature.
  
  
  CONCLUSIONS
  As obstructive jaundice is a relatively common presenting sign in the emergency room and in general surgical clinics, we thus recommend early consideration of metastatic disease as a differential diagnosis in patients post-chemoradiotherapy for anal carcinoma who present with obstructive jaundice.
authors: Department of Abdominal Transplantation and Hepatobiliary Surgery, Baylor College of Medicine, Houston, TX, USA. garybassmd@gmail.com
authors: G
authors: G
authors: Bass
authors: C A
authors: CA
authors: O'Mahony
authors: R
authors: R
authors: Smith
authors: M S
authors: MS
authors: Dennison
authors: J A
authors: JA
authors: Goss
mesh_terms: D001005:Anus Neoplasms / Q000473:pathology* / Q000601:surgery; D001652:Bile Ducts / Q000473:pathology; D001661:Biliary Tract Neoplasms / Q000556:secondary* / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000556:secondary* / Q000601:surgery; D003138:Common Bile Duct Neoplasms; D004108:Dilatation, Pathologic; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D041781:Jaundice, Obstructive / Q000209:etiology; D007582:Jejunostomy; D008875:Middle Aged; D010183:Pancreatic Ducts / Q000473:pathology