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 | * Tumours are often seen divided into lobules by septa | ||
* Reported signal characteristics include: | * Reported signal characteristics include: | ||
* T2: the septae are often hypointense or isointense 3 T1 C+ (Gd): the septae often show marked enhancement | * T2: the septae are often hypointense or isointense 3 T1 C+ (Gd): the septae often show marked enhancement | ||
Mature (cystic) ovarian teratoma | Mature (cystic) ovarian teratoma | ||
* MR evaluation usually tends to be reserved for difficult cases, but is exquisitely sensitive to fat components | * 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 | * 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 | * 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 | |||
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 | Ovarian yolk sac tumour | ||
* They can be associated with prominent signal voids on MRI | |||
* Areas of haemorrhage can also be seen | |||
Ovarian choriocarcinoma | |||
* On imaging, choriocarcinomas appear as vascular solid tumours with cystic, haemorrhagic, and necrotic areas | |||
Ovarian choriocarcinoma On imaging, choriocarcinomas appear as vascular solid tumours with cystic, haemorrhagic, and necrotic areas | |||
==References== | ==References== | ||
Revision as of 16:58, 12 November 2015
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Ovarian germ cell tumor Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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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
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
- They can be associated with prominent signal voids on MRI
- Areas of haemorrhage can also be seen
Ovarian choriocarcinoma
- On imaging, choriocarcinomas appear as vascular solid tumours with cystic, haemorrhagic, and necrotic areas