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| '''MR Imaging findings according to FIGO stage''' | | '''MR Imaging findings according to FIGO stage''' |
| :* stage 1: [[tumour]] confined to [[uterus]]
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| ::* stage 1a: tumour confined to the uterine endometrium
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| :::* normal or widened endometrium
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| :::* normal low T2 signal junctional zone
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| :::* complete subendometrial enhancement on T1 contrast imaging
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| ::* stage 1b: invasion of less than half of the myometrium
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| :::* disruption or irregularity of the low T2 signal junctional zone
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| :::* disruption of subendometrial early enhancement
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| ::* stage 1c: invasion of outer half of myometrium
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| :::* disruption or irregularity of the low T2 signal junctional zone
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| :::* disruption of subendometrial early enhancement
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| :::* preservation of band of outer [[myometrium]]
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| :* stage 2: tumour extends to [[cervix]]
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| ::* stage 2a
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| :::* widening of internal os and endocervical canal by high/isointense T2W signal tumour mass.
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| :::* intact low T2W signal of normal cervical stroma
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| ::* stage 2b
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| :::* widening of internal os and endocervical canal by high/isointense T2W signal tumour mass
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| :::* disruption of low T2 signal cervical stroma
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| :* stage 3: tumour extension beyond the [[uterus]]
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| ::* stage 3a
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| :::* irregularity to the uterine contour
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| :::* disruption of low T2 signal uterine serosa
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| ::* stage 3b
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| :::* thickening of vaginal wall
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| :::* high T2 signal tumour infiltrating low signal vaginal wall
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| ::* stage 3c
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| :::* pelvic/para aortic lymph node involvement
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| :::* short axis >/= 8 mm in pelvic nodes
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| :* stage 4: bladder/rectal or distant metastasis
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| ::* stage 4a
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| :::* disruption of low T2 signal [[bladder]] or rectal wall
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| :::* intraluminal bladder mass
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| {| style="border: 0px; font-size: 90%; margin: 3px; width: 600px" align=center | | {| style="border: 0px; font-size: 90%; margin: 3px; width: 600px" align=center |
| |valign=top| | | |valign=top| |
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]
Overview
Pelvic MRI may be diagnostic of endometrial cancer.
Pelvic MRI
A dedicated pelvic MRI protocol is recommended for optimal assessment.[1]
MRI is considered superior to CT for local staging. Contrast enhanced MRI imaging improves accuracy in detecting myometrial invasion.
- T1: hypo- to isointense to normal endometrium
- T1 C+(Gd): carcinomatous tissue will enhance less than normal endometrium
- T2: hyperintense or heterogeneous relative to normal endometrium
MR Imaging findings according to FIGO stage
|
|
| Stage of endometrial cancer
|
MRI findings
|
|---|
|
Stage 1: tumour confined to uterus
|
- 1a.
- Disruption or irregularity of the low T2 signal junctional zone
- Disruption of subendometrial early enhancement
- 1b.
- Disruption or irregularity of the low T2 signal junctional zone
- Disruption of subendometrial early enhancement
- Preservation of band of outer myometrium
|
|
Stage 2: tumour extends to cervix
|
- Widening of internal os and endocervical canal by high/isointense T2W signal tumour mass.
- Intact low T2W signal of normal cervical stroma
- Disruption of low T2 signal cervical stroma
|
|
Stage 3: tumour extension beyond the uterus
|
- 3a
- Irregularity to the uterine contour
- Disruption of low T2 signal uterine serosa
- 3b
- Thickening of vaginal wall
- High T2 signal tumour infiltrating low signal vaginal wall
- 3c
- Pelvic/para aortic lymph node involvement
- Short axis >/= 8 mm in pelvic nodes
|
|
Stage 4: bladder/rectal or distant metastasis
|
- 4a
- Disruption of low T2 signal bladder or rectal wall
- Intraluminal bladder mass
|
References
Template:WikiDoc Sources