Ovarian dermoid cyst

Case contributed by Dr Craig Hacking


RIF pain for 1 week. bHCG negative.

Patient Data

Age: 30 years
Gender: Female

The uterus is midline and anteverted. The endometrial cavity has a accurate appearance. No focal lesions identified. The right ovary is normal, containing follicles. The left ovary could not be identified. There is a left adnexal mass which measures 8.9 x 5.6 x 9.5 cm and extends to the midline. It contains layering hypoechoic fluid with internal debris dependently and homogenous echogenic material superiorly suggesting fat. There is no altered vascularity demonstrated.

No free fluid. The kidneys are normal.


Left ovarian mass with features consistent with a dermoid cyst.

Case Discussion

aka Mature cystic teratoma

Contains tissue from all 3 germ cell layers hence have all kinds of tissue - fat, hair, skin, teeth, cartilage, etc

10% bilateral


  • torsion
  • haemorrhage
  • malignant degeneration - rare
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Case information

rID: 36730
Case created: 7th May 2015
Last edited: 14th Sep 2017
System: Gynaecology
Inclusion in quiz mode: Included

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