Ovarian germ cell tumor MRI
|
Ovarian germ cell tumor Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Ovarian germ cell tumor MRI On the Web |
|
American Roentgen Ray Society Images of Ovarian germ cell tumor MRI |
|
Risk calculators and risk factors for Ovarian germ cell tumor MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Monalisa Dmello, M.B,B.S., M.D. [2] Ultrasound dysgerminomas
MRI
Tumours are often seen divided into lobules by septa.
Reported signal characteristics include:
T2: the septae are often hypointense or isointense 3 T1 C+ (Gd): the septae often show marked enhancement 3
Conventional radiography
Mature (cystic) ovarian teratomaMay show calcific and tooth components with the pelvis.
Pelvic MRI
MR evaluation usually tends to be reserved for difficult cases, but is exquisitely sensitive to fat components. Both fat suppression techniques and chemical shift artefact can be used to confirm the presence of fat.
Enhancement is also able to identify solid invasive components, and as such can be used to accurately locally stage malignant variants.
Immature ovarian teratoma
CT and MRI
The presence of a prominent solid component containing calcifications and small foci of fat is suggestive. Cystic components may contain serous, mucinous, or fatty sebaceous material. Haemorrhage may be present.
Ovarian yolk sac tumour
Pelvic MRI
They can be associated with prominent signal voids on MRI 2. Areas of haemorrhage can also be seen.
Ovarian choriocarcinoma On imaging, choriocarcinomas appear as vascular solid tumours with cystic, haemorrhagic, and necrotic areas.