Ovary

Benign Cystic Teratoma

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Benign Cystic Teratoma, Benign Ovarian Teratoma, Cystic Teratoma, Ovarian Cystic Teratoma, Ovarian Teratoma, Dermoid Ovarian Cyst, Teratoma, Dermoid Cyst

  • Definitions
  1. Teratoma
    1. Non-seminomatous germ cell tumor
    2. Pluripotent cells, containing various germ cell origins (endoderm, mesoderm, ectoderm)
    3. Found in the Testis, ovary as well as extra-genital sights (e.g. CNS, mediastinum, lung, Stomach, Sacrum)
    4. Mature Teratomas contain well-differentiated adult type tissues (e.g. calcified teeth, hair)
    5. Immature Teratomas contain fetal type tissues
    6. Teratomas may be benign or malignant
  2. Benign Ovarian Teratoma
    1. Benign ovarian germ cell tumor
  3. Dermoid Ovarian Cyst (Mature Ovarian Teratoma)
    1. Type of Ovarian Cystic Teratoma, typically unilateral
    2. Presents as Ovarian Mass often with sebaceous material, hair, calcified teeth, fat, bone, Muscle and other tissue
    3. Mature Ovarian Teratomas without fetal tissue types are benign in most cases (>98%)
  4. Dermoid Skin Cyst
    1. Teratomas are referred to as Dermoid Cysts when they occur in infants and children
    2. Skin dermoids are typically found in the periorbital region, but may occur in the head or neck
    3. Dermoid Cysts are subcutaneous lesions containing a mix of keratin, Sebaceous Glands, hair
    4. Left untreated as children, risk of craniofacial extension in adulthood
    5. Pryor (2005) Otolaryngol Head Neck Surg 132(6): 938-42 [PubMed]
  1. Ovarian Mass with hyperechoic area with acoustic shadow
  2. Fluid-fluid level with echogenic fluid above
  3. Hyperechoic lines and spots (dermoid mesh)
  • Complications
  1. Ovarian Torsion
  2. NMDA Encephalitis
  • References
  1. Laing (2001) Radiol Clin North Am 39(3):523-40 [PubMed]