Ovarian mucinous cystadenoma 2


  • A 24 years old lady
  • Progressive abdominal distension
  • No obstructive symptom
CT abdomen pelvis post contrast in soft tissue window, axial plane

CT scan findings:

  • A cystic mass in the left pelvic region measuring 15x12x13 cm. No solid component or papillary projection.
  • It shows thin wall with multiple thin mildly enhancing septae
  • There is no fat component or calcification within the mass lesion.
  • The right ovary is normal. No ascites
  • No local infiltration to surrounding structures

Intra-operative findings:

  • Laparotomy and left cystectomy and release of large bowel adhesion
  • Left ovarian cyst, 15×18 cm, multiloculated cystic, no solid component, posterior to uterus, no obvious surface deposits, mild adhesion between the descending colon and the ovarian cysts
  • Both fallopian tubes are normal

HPE findings:

  • Macroscopy: left ovarian cyst consist of a cystic mass measures 110x80x50 mm. Cut section shows multiloculated cyst filled with jelly-like material. The locules ranges from 5 mm to 50 mm in diameter. The wall thickness is about 1 mm. No solid area seen.
  • Microscopy: sections show fibrocollagenous ovarian cyst wall and locules lined in areas by mucin-secreting, columnar epithelium. There is no tufting, multilayering, atypia or mitoses seen Foci of calcification are present in the wall.
  • Diagnosis: left ovarian cyst: Mucinous cystadenoma

Diagnosis: Ovarian mucinous cystadenoma


  • Mucinous cystadenomas of the ovary are known for their potential to grow to massive proportions.
  • They are often incidentally diagnosed.
  • They are typically benign tumours accounting for 15 percent of ovarian neoplasms and up to 80 percent of all mucinous tumors.
  • Ovarian mucinous cystadenomas are characteristically unilateral, only 5 percent presenting bilaterally
  • The peak incidence occurs among women who are between 30 and 50 years of age.


Author: radhianahassan