title: Normal-sized ovary carcinoma syndrome (NOCS) detected with FDG-PET/CT.
abstract: BACKGROUND
  Normal-sized ovary carcinoma syndrome (NOCS) is an ovarian cancer with ovaries being of normal size, accompanied by diffuse metastatic disease of the peritoneal cavity.
  
  
  METHODS
  A 39-year-old woman presented with lower abdominal pains. The computed tomopraphy (CT) of the chest, esophagogastroduodenography, and colonoscopy showed no remarkable findings. Amagnetic resonance imaging (MRI) displayed a slightly enlarged right ovary, thickening of the peritoneum, and massive ascites. The right ovary showed high intensity on T2 images and scattered low intensity spots on diffusion-weighted images. The cytology of ascites suspected adenocarcinoma cells. A positron emission tomography (PET) and CT using 18F-fluorodeoxyglucose (FDG) demonstrated markedly increased FDG uptake at the right ovary and peritoneum. The presumptive diagnosis of normal-sized ovary carcinoma syndrome was made. She underwent a total hysterectomy, bilateral salpingo-oophorectomy, pelvic lymphadenectomy, and partial omentectomy. The pathological examination revealed serous cystadenocarcinoma of the right ovary.
  
  
  CONCLUSIONS
  FDG-PET/CT is useful for the detection of NOCS.
authors.forename: M
authors.initials: M
authors.lastname: Kanda
authors.forename: A
authors.initials: A
authors.lastname: Sonoyama
authors.forename: N
authors.initials: N
authors.lastname: Ohara
mesh_terms: D000328:Adult; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D010051:Ovarian Neoplasms / Q000175:diagnosis* / Q000473:pathology; D010534:Peritoneal Neoplasms / Q000556:secondary*; D049268:Positron-Emission Tomography / Q000379:methods*; D019275:Radiopharmaceuticals; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18