Ovarian cancer MRI: Difference between revisions
Jump to navigation
Jump to search
Hudakarman (talk | contribs) MRI |
Hudakarman (talk | contribs) No edit summary |
||
| Line 4: | Line 4: | ||
'''[[Endometrioid carcinoma of the ovary]]''' | |||
Pelvic MRI: Reported signal characteristics include | |||
*T2: | |||
**Relatively low signal intensity of the tumor wall | |||
Endometrioid carcinoma of the ovary | **Shading sign may be seen | ||
*T1C+(Gd): | |||
Pelvic MRI | **can show mild enhancement | ||
'''[[Ovarian serous cystadenocarcinoma]]''' | |||
Reported signal characteristics include | *MRI is the modality of choice in the characterization of ovarian malignancy and in the detection of lymphatic, peritoneal, and distant metastases | ||
*Both for preoperative planning and post-treatment follow up. | |||
T2: | *The cystic components | ||
**Are high T2, low T1 signal | |||
**If there has been intralesional hemorrhage (c.f. mucinous cystadenocarcinoma, there is typically slightly increased T1 signal of the cystic component) | |||
*Solid malignant components | |||
**Demonstrate intermediate T1 and T2 signal, restricted diffusion, and gadolinium enhancement. | |||
*DWI is useful for the detection of distant metastases. | |||
'''[[Ovarian mucinous cystadenocarcinoma]]''' | |||
*T1: | |||
Ovarian serous | **The signal intensity of mucin on T1-weighted images varies depending on the degree of mucin concentration | ||
**On T1-weighted images, loculi with watery mucin have a lower signal intensity than loculi with thicker mucin. | |||
MRI is the modality of choice in the characterization of ovarian malignancy and in the detection of lymphatic, peritoneal, and distant metastases | *T2 | ||
**on T2-weighted images, the corresponding signal intensities are flipped, so that loculi with watery mucin have a high signal intensity and loculi with thicker mucin appear slightly hypointense. | |||
The cystic components | *MRI | ||
*Often seen as a cystic ovarian mass with the margin being generally smooth. Solid protrusions are often both round and few in number. | |||
Solid malignant components | *Reported signal characteristics include: | ||
*T1: can vary from low to very high (often dependent on the hemorrhagic component(s), not a specific feature) | |||
DWI is useful for detection of distant metastases. | |||
T1: | |||
T2 | |||
on T2-weighted images, the corresponding signal intensities are flipped, so that loculi with watery mucin have high signal intensity and loculi with thicker mucin appear slightly hypointense. | |||
MRI | |||
Often seen as a cystic ovarian mass with the margin being generally smooth. Solid protrusions are often both round and few in number. | |||
Reported signal characteristics include | |||
T1: can vary from low to very high (often dependent on | |||
== References == | == References == | ||
Revision as of 19:07, 10 July 2019
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]
|
Ovarian cancer Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Ovarian cancer MRI On the Web |
|
American Roentgen Ray Society Images of Ovarian cancer MRI |
Endometrioid carcinoma of the ovary
Pelvic MRI: Reported signal characteristics include
- T2:
- Relatively low signal intensity of the tumor wall
- Shading sign may be seen
- T1C+(Gd):
- can show mild enhancement
Ovarian serous cystadenocarcinoma
- MRI is the modality of choice in the characterization of ovarian malignancy and in the detection of lymphatic, peritoneal, and distant metastases
- Both for preoperative planning and post-treatment follow up.
- The cystic components
- Are high T2, low T1 signal
- If there has been intralesional hemorrhage (c.f. mucinous cystadenocarcinoma, there is typically slightly increased T1 signal of the cystic component)
- Solid malignant components
- Demonstrate intermediate T1 and T2 signal, restricted diffusion, and gadolinium enhancement.
- DWI is useful for the detection of distant metastases.
Ovarian mucinous cystadenocarcinoma
- T1:
- The signal intensity of mucin on T1-weighted images varies depending on the degree of mucin concentration
- On T1-weighted images, loculi with watery mucin have a lower signal intensity than loculi with thicker mucin.
- T2
- on T2-weighted images, the corresponding signal intensities are flipped, so that loculi with watery mucin have a high signal intensity and loculi with thicker mucin appear slightly hypointense.
- MRI
- Often seen as a cystic ovarian mass with the margin being generally smooth. Solid protrusions are often both round and few in number.
- Reported signal characteristics include:
- T1: can vary from low to very high (often dependent on the hemorrhagic component(s), not a specific feature)