Type:
Educational Exhibit
Keywords:
Genital / Reproductive system female, Pelvis, CT, Ultrasound, MR, Diagnostic procedure, Education and training
Authors:
O. Ciuhodaru, F. mihai, C. Bar, A. Pricop, D. Negru; Iasi/RO
DOI:
10.1594/ecr2018/C-1517
Background
•the most common ovarian neoplasms in young patients (mean age 20-30 years old);
•germinal cell tumors derived from ectopic multipotential cells,
whose migration from the yolk sac endoderm to the urogenital crest during embryogenesis does not occur;
•benign,
well-differentiated cystic lesions/ solid and malignant;
•ovarian teratomas:
•mature cystic teratomas(sebaceous material,
calcifications,
fat)
•immature teratomas (a nonspecific appearance,
being heterogeneous,
with irregular solid component and scattered calcifications)
•monodermal teratomas
Mature cystic teratoma
•the most common ovarian neoplasm
•ectodermal tissue (skin derivatives and neural tissue),
mesodermal tissue (fat,
bone/tooth,
cartilage,
muscle,
endodermal tissue (mucinous or ciliated epithelium; adipose tissue is present in 67%-75% of cases,
and teeth are seen in 31%;
•asymptomatic/ ovarian torsion/ malignant
transformation or rupture;
•<7 cm -> if not resected,
follow up with US (6-12 months)