title: Ciliated hepatic foregut cyst in a patient with renal cell carcinoma.
abstract: BACKGROUND
  Ciliated hepatic foregut cyst is a rare condition almost always found incidentally on a computerized tomography scan or at autopsy. Rarely, portal vein compression can be a presenting finding. The cysts are usually unilocular and occur with greater frequency in males. There is a predilection for the left lobe. The cysts average 3 cm in size.
  
  
  METHODS
  We present in this case report a ciliated hepatic foregut cyst found incidentally in the setting of renal carcinoma. The patient was a man known to have a large renal mass, assumed to be cancer, and a liver mass suspicious for metastatic disease. This liver mass was cystic and upon further analysis showed ciliated epithelial lining. We describe the gross and histological appearance, as well as a brief discussion of ciliated hepatic foregut cysts.
  
  
  CONCLUSIONS
  We report the first case of a patient with coexisting renal cell carcinoma and a ciliated hepatic foregut cyst. While this may represent a coincidental finding, a possibility of a neoplastic or non-neoplastic disorder associated with ciliated hepatic foregut cysts can not be completely ruled out.
authors.affiliation: Department of Pathology, Medical College of Wisconsin, Milwaukee, WI53226, USA. tstraus@mcw.edu
authors.forename: Todd
authors.initials: T
authors.lastname: Straus
authors.forename: Vladimir
authors.initials: V
authors.lastname: Osipov
mesh_terms: D002292:Carcinoma, Renal Cell / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D002923:Cilia; D003560:Cysts / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007680:Kidney Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D008107:Liver Diseases / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed