title: Primary mucinous neoplasms of the renal pelvis: report of two cases.
abstract: OBJECTIVE
  To describe the histopathologic features and clinical presentation of two primary mucinous neoplasms of the renal pelvis.
  
  
  METHODS
  We describe two cases and its correlation with histopathologic findings.
  
  
  RESULTS
  Primary mucinous neoplasm of the renal pelvis was diagnosed  by histopathology in two patients who received medical treatment for abdominal tumor.
  
  
  CONCLUSIONS
  Primary mucinous neoplasms of the renal pelvis are extremely rare; the first symptom is usually abdominal growth, followed by hematuria  and flank pain; it is difficult to suspect the diagnosis before surgery, because in most cases it is established with biopsy.
authors.affiliation: Service of Anatomía Patológica en el Hospital General Dr. Miguel Silva, Morelia, Mich. eipen@gmail.com
authors.forename: Eri
authors.initials: E
authors.lastname: Peña Martínez
authors.forename: Jesús A
authors.initials: JA
authors.lastname: Villagrán Uribe
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Silva López
authors.forename: Leilane
authors.initials: L
authors.lastname: Arias González
authors.forename: Juana R
authors.initials: JR
authors.lastname: García Ramirez
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000601:surgery; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged