title: Cauda equina syndrome due to leptomeningeal carcinomatosis of the ovary.
abstract: BACKGROUND
  Serous cystadenocarcinoma is the most common malignant ovarian tumor. 85% are associated with extraovarian spread at the time of diagnosis. Cauda equina syndrome due to leptomeningeal ovarian serous cystadenocarcinomatosis is rare.
  
  
  METHODS
  A 66-year-old female with stage IV ovarian papillary serous cystadenocarcinoma presented with perianal numbness and sphincter dysfunction. On exam she had decreased anal tone with saddle anesthesia. Her MRI did not demonstrate any leptomeningeal involvement. CSF showed malignant cells consistent with metastatic ovarian adenocarcinoma. She received intrathecal methotrexate, capecitabine and bevacizumab. She expired 8 months later.
  
  
  CONCLUSIONS
  Ovarian cancer metastasizng to the cauda equina should be highly suspected based on the clinical presentation alone, even with unremarkable imaging studies. CSF cytology should be checked in cases presenting with cauda equina syndrome.
authors.affiliation: Department of Neurology, Kaiser Southern California Permanente Medical Group, Fontana, CA, USA. William_S_Baek@htomail.com
authors.forename: W S
authors.initials: WS
authors.lastname: Baek
authors.forename: S V
authors.initials: SV
authors.lastname: Kubba
mesh_terms: D000368:Aged; D002291:Carcinoma, Papillary / Q000134:cerebrospinal fluid / Q000188:drug therapy / Q000473:pathology*; D018284:Cystadenocarcinoma, Serous / Q000134:cerebrospinal fluid / Q000188:drug therapy / Q000473:pathology*; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D055756:Meningeal Carcinomatosis / Q000134:cerebrospinal fluid / Q000188:drug therapy / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000134:cerebrospinal fluid / Q000188:drug therapy / Q000473:pathology*; D011128:Polyradiculopathy / Q000134:cerebrospinal fluid / Q000188:drug therapy / Q000473:pathology*