Ovarian germ cell tumor MRI: Difference between revisions
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{{CMG}}{{AE}} {{MD}} | {{CMG}}{{AE}} {{MD}} | ||
dysgerminomas | |||
* 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 | |||
Mature (cystic) ovarian teratoma | |||
* 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. | |||
Mature (cystic) ovarian | |||
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 | Immature ovarian teratoma | ||
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. | 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. | ||
Revision as of 16:49, 12 November 2015
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Ovarian germ cell tumor Microchapters |
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Ovarian germ cell tumor MRI On the Web |
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American Roentgen Ray Society Images of Ovarian germ cell tumor MRI |
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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]
dysgerminomas
- 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
Mature (cystic) ovarian teratoma
- 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
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.