Jalal Jalal Shokouhi-MD Ali Akbar Ameri- MD Shahyar Pashaei-PhD, anatomist
Endometerium: 1. US is first choice 2. MRI: diagnosis and staging of malignancies * MR-features do not diagnose endometrial polyps from cancer!?
1- Benign lesions Congenital UT disorders, leiomyomas, polyp, hyperplasia, adenomyosis, endometeriosis,cystic teratomas
Endometrial atrophy
UTERINE PERISTALSIS
DIDELPHYS
BICORNUATE
Mimics of Bicornute Uterus
SEPTATE
COMPLEX ANOMALIES
2-Malignants: endometrial cancer (early, late, recurrence), sarcoma, adenosarcoma, mixed mesodermal, neoplasms, liomyosarcoma, lymphoma, choriocarcinoma, metastasis
ENDOMETRIAL CANCER, EARLY STAGE
ENDOMETRIAL THICKENING
ENDOMETRIAL POLYP ADENOMYOSIS
ENDOMETRIAL CANCER, LATE STAGE
ENDOMETRIAL CANCER, RECURRENCE
DDx: Endometrial Carcinoma Recurrence Post-surgical granuloma
ENDOMETRIAL CANCER, RECURRENCE
ENDOMETRIAL STROMAL SARCOMA
ADENOSARCOMA
Uterine masses Endometrial polyp Endometrial cancer
MALIGNANT MIXED MESODERMAL TUMOR
LYMPHOMA, UTERUS
Choriocarcinoma,uterus
DDx: Choriocarcinoma Molar pregnancy Retained products of conception
Metastases, uterus
3-Others: adenomyosis, asherman, cystic adenomyosis, tomoxifen, induced changes, IUCD, age and hormonal changes
ADENOMYOSIS
Cystic adenomyosis
Hemorrhagic leiomyoma Gartner duct cyst
INTRAUTERINE DEVICE EVALUATION
TAMOXIFEN-INDUCED CHANGES
Endometerium: 1. Proliferatine 3-8 mm 2. Secretary 5-16 mm 3. Menopause a. No bleeding = 8 mm b. With bleeding = 5 mm 4. Atrophic > 4 mm
MRI of endometrium: T1 intermediate signal T2 high signal STIR, MR-myelogram high signal * UT peristalsis signal ↓, thickness change
Conclusion: *MR-features do not accurately distinguish endometrial polyps from cancer because images limited to T2 signal and T1 anatomy *For congenital anomalies % accuracy *Can be use for diethylbestrol exposure (hyperplasia, T-shaped, UT, endometrial constriction, hydrosalpinges and short cervix)