title: Primary invasive mucinous ovarian carcinoma of the intestinal type: importance of the expansile versus infiltrative type in predicting recurrence and lymph node metastases.
abstract: OBJECTIVE
  Investigate the role of expansile versus infiltrative type of primary invasive intestinal type mucinous epithelial ovarian carcinoma (mEOC) in predicting recurrence and lymph node metastases.
  
  
  METHODS
  Retrospective study. Differentiation was defined according to the Shimizu-Silverberg and expansile/infiltrative type according to the Lee-Scully criteria.
  
  
  RESULTS
  Out of 104 patients with mucinous ovarian carcinomas, 44 primary invasive mucinous epithelial carcinomas of the intestinal type (mEOC) were identified. Patients with a mEOC of the expansile type are mainly diagnosed in stage I (21 out 23) and have an excellent prognosis (no relapses in 21 Stage I patients). Patients with mEOC tumours of the infiltrative type are less frequently diagnosed in stage I (12 out of 21) and 2 recurrences were noted out of 12 Stage I patients. Lymph node metastases were not observed in patients with apparent Stage I disease of the expansile type, but were present in 3 out 10 patients with infiltrative disease. Degree of differentiation did not predict recurrence or the presence of lymph node metastases. Prognosis was poor in patients with Stage II or higher disease, irrespective of type of infiltration.
  
  
  CONCLUSIONS
  Expansile mEOC is mainly diagnosed in stage I and is not associated with lymph node metastases. Infiltrative mEOC has a worse prognosis and is associated with lymph node metastases. Degree of differentiation was unreliable in predicting recurrence or lymph node metastases.
authors: Division of Gynecologic Oncology, Leuven Cancer Institute and Department of Obstetrics and Gynaecology, University Hospital Leuven, Leuven, Belgium.
authors: K
authors: K
authors: Muyldermans
authors: Ph
authors: P
authors: Moerman
authors: F
authors: F
authors: Amant
authors: K
authors: K
authors: Leunen
authors: P
authors: P
authors: Neven
authors: I
authors: I
authors: Vergote
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000145:classification / Q000378:metabolism / Q000473:pathology*; D000328:Adult; D000368:Aged; D018394:CA-125 Antigen / Q000032:analysis; D002272:Carcinoembryonic Antigen / Q000032:analysis; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008565:Membrane Proteins / Q000032:analysis; D008875:Middle Aged; D060787:Neoplasm Grading; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local; D009367:Neoplasm Staging; D010051:Ovarian Neoplasms / Q000145:classification / Q000378:metabolism / Q000473:pathology*; D011379:Prognosis; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D055815:Young Adult
chemical_list: D018394:CA-125 Antigen; D002272:Carcinoembryonic Antigen; C451759:MUC16 protein, human; D008565:Membrane Proteins