title: Papillary serous cystadenocarcinoma arising in benign glandular inclusion cysts in pelvic and inguinal lymph nodes.
abstract: BACKGROUND
  Benign glandular inclusion cysts occurring within lymph nodes have been well described in the literature. However, the malignant potential of these glands is unknown. One previous case report described an adenoacanthoma arising within one of these glands.
  
  
  METHODS
  A 65-year-old woman was previously diagnosed with papillary serous cystadenocarcinoma in the inguinal and pelvic lymph nodes. She had no tumor involving the ovaries or peritoneal surfaces at the time of initial diagnosis. She presented to us 9 years later with a recurrence of this tumor in the obturator fossa and along the vaginal sidewall. Treatment consisted of surgery, radiation, and chemotherapy.
  
  
  CONCLUSIONS
  Although rare, müllerian tumors can occur in the lymph nodes without simultaneous ovarian or peritoneal involvement, and most likely arise de novo within lymph node inclusion cysts.
authors.affiliation: Department of Obstetrics and Gynecology, University of California Los Angeles School of Medicine, Jonsson Comprehensive Cancer Center, USA.
authors.forename: A C
authors.initials: AC
authors.lastname: Casey
authors.forename: J S
authors.initials: JS
authors.lastname: Berek
mesh_terms: D000368:Aged; D018283:Cystadenocarcinoma, Papillary / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D007264:Inguinal Canal; D008206:Lymphatic Diseases / Q000150:complications / Q000473:pathology; D008210:Lymphocele / Q000150:complications* / Q000473:pathology