title: MRI features of serous oligocystic adenoma of the pancreas: differentiation from mucinous cystic neoplasm of the pancreas.
abstract: OBJECTIVE
  The purpose of this study was to describe the MRI features of the benign pancreatic neoplasm serous oligocystic adenoma (SOA) that differ from those of mucinous cystic neoplasm (MCN), a neoplasm with the potential for malignant degeneration.
  
  
  METHODS
  Seven patients with SOA (seven women; mean age 36.6 years) and eight patients with MCN (eight women: mean age 39.9 years) were included. Several imaging features were reviewed: mass size, location, shape, wall thickness, cyst configuration (Type I, unilocular; Type II, multiple clustered cyst; Type III, cyst with internal septation) and signal intensity of the lesion with heterogeneity.
  
  
  RESULTS
  SOA lesions were smaller (3.4 cm) than those of MCN (9.3 cm) (p=0.023). The commonest lesion shape was lobulated (85.7%) for SOA, but oval (50.0%) or lobulated (37.5%) for MCN (p=0.015). The most common cyst configuration was Type II (85.7%) for SOA and Type III (75.0%) for MCN (p=0.008). Heterogeneity of each locule in T(1) weighted images was visible in all cases of MCN, but in no case for SOA (p=0.004).
  
  
  CONCLUSIONS
  SOA could be differentiated from MCN by identifying the imaging features of lobulated contour with multiple clustered cyst configurations and homogeneity of each locule in T(1) weighted MR images.
authors.affiliation: Department of Diagnostic Radiology, Ajou University School of Medicine, Gyeonggi-Do, Republic of Korea. radljh@ajou.ac.kr
authors.forename: J H
authors.initials: JH
authors.lastname: Lee
authors.forename: J K
authors.initials: JK
authors.lastname: Kim
authors.forename: T H
authors.initials: TH
authors.lastname: Kim
authors.forename: M-S
authors.initials: MS
authors.lastname: Park
authors.forename: J-S
authors.initials: JS
authors.lastname: Yu
authors.forename: J-Y
authors.initials: JY
authors.lastname: Choi
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
authors.forename: Y B
authors.initials: YB
authors.lastname: Kim
authors.forename: K W
authors.initials: KW
authors.lastname: Kim
mesh_terms: D000328:Adult; D018291:Cystadenoma, Mucinous / Q000175:diagnosis* / Q000473:pathology; D018293:Cystadenoma, Serous / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000145:classification / Q000175:diagnosis* / Q000473:pathology; D055815:Young Adult