Multiparametric magnetic resonance imaging of endometrial polypoid lesions

Lee, Youkyoung; Kim, Kyeong Ah; Song, Mi Jin; Park, Yang Shin; Lee, Jong Mee; Choi, Jae Woong; Lee, Changhee

doi:10.1007/s00261-020-02567-7

Cited by 14 publications

(15 citation statements)

References 34 publications

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“…On imaging, endometrial hyperplasia appears mostly as diffuse smooth endometrial thickening. [ 2 ] It shows similar SI of the endometrium on T2WI and small cystic components. On DWI, it shows low SI with high ADC values above 1.1, which is an important point in differentiating it from malignancy, which shows high SI with low ADC due to relatively high cellularity [ Figure 2 ].…”

Section: E Ndometrial H Yperplasiamentioning

confidence: 96%

“…Histologically, polyps contain mixture of three elements in varying degrees: stroma of dense fibrous core, thick-walled vascular channels, and endometrial glands with endometrial glands forming predominant part of the lesion [ Figure 3 ]. [ 2 6 ]…”

Section: E Ndometrial P Olypsmentioning

confidence: 99%

“…The step-wise diagnostic evaluation in postmenopausal endometrium as practiced in clinical care is detailed in Box 1 with the role of imaging and nonimaging modalities outlined. [ 1 2 3 4 ]…”

mentioning

confidence: 99%

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Understanding the Endometrium at Menopause

Nori¹

2021

Journal of Mid-Life Health

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Section: E Ndometrial H Yperplasiamentioning

confidence: 96%

Section: E Ndometrial P Olypsmentioning

confidence: 99%

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Understanding the Endometrium at Menopause

Nori¹

2021

Journal of Mid-Life Health

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“…Recommended sequences include half-Fourier acquisition single-shot fast spin echo sequences, true steady-state precession fast-imaging sequences, and single-shot fast spin echo sequences. When posterior pelvic diseases are suspected (such as constipation due to outlet obstruction, rectocele, intestinal hernia, rectal intussusception, and prolapse), dynamic MR defecation angiography should be added, and 100-180 mL of ultrasonic coupling agent should be injected into the rectum [11][12][13][14]. In comparison of pelvic anatomy, the mid-sagittal, sagittal, coronal, and axial dynamic MRI images were collected every time the patient's resting phase-levator phase-relaxation phase-forcereflex phase was taken as a cycle [15].…”

Section: Introductionmentioning

confidence: 99%

Diagnostic Value and Clinical Application of Diffusion‐Weighted Magnetic Resonance Imaging for Female Pelvic Lesions

Gao

2022

Contrast Media & Molecular Imaging

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Pelvic inflammatory disease refers to a group of infectious diseases of the female upper genital tract, often caused by ascending infection of vaginitis and cervicitis, causing endometritis, salpingitis, tubo-ovarian abscess, pelvic connective tissue inflammation, and/or pelvic peritonitis. PID is the most common and important infectious disease in nonpregnant women of childbearing age, and inflammation in multiple parts often coexists and affects each other. The functional MRI techniques currently used in pelvic floor muscle injury are magnetic resonance diffusion tensor imaging, T2 mapping, and magnetic resonance elastography. Diffusion tensor imaging is a new imaging and postprocessing technology developed on the basis of magnetic resonance diffusion-weighted imaging. Due to the lack of specificity of clinical symptoms, many subclinical patients are often not detected and diagnosed in time, so it is very difficult to accurately estimate the incidence of PID. This article retrospectively analyzed 72 patients with pelvic inflammatory disease confirmed by surgical pathology from February 2020 to 2022, who had undergone pelvic MRI examination before surgery, including 25 patients with chronic pelvic inflammation (hydrosalpinx), 25 patients with acute pelvic inflammation, and 47 cases (including 21 cases of hydrosalpinx, 19 cases of tubo-ovarian abscess, and 7 cases of pelvic abscess). The age range was 13 to 59 years old. The clinical data and MRI findings were analyzed, the ADC value of the cystic part of the lesion was measured, and the differences in age, maximum diameter of the lesion, thickness of the vessel wall/separation, and the ADC value of the cystic part of chronic and acute pelvic inflammation were compared. In this part of the cases, there were 25 cases of chronic pelvic inflammation and 47 cases of acute pelvic inflammation. The average ADC value of the cystic component of chronic inflammation was significantly higher than that of acute inflammation, which were (2.86 ± 0.20) × 10−3 mm2/s and (1.07 ± 0.38) ×10−3 mm2/s, respectively, P value <0.001.

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“…In particular, it is valuable for the differentiation of benign and malignant uterine diseases and preoperative staging of malignant tumors ( 7 , 8 ). Conventional T2-weighted imaging (T2WI) and some functional MRI sequences such as diffusion-weighted imaging (DWI) and dynamic contrast-enhanced MRI (DCE-MRI) have been widely explored for diagnosing uterine diseases ( 9 ). However, because of coexisting multiple lesions, extensive lesions, metratrophia, and other factors, the accuracy of MRI in identifying different primary uterine lesions needs further improvement, especially for cancers involving both cervix and the lower uterine segment, leading to ambiguous diagnosis of endometrial and cervical cancer ( 10 ).…”

Section: Introductionmentioning

confidence: 99%

Preliminary Application of Magnetization Transfer Imaging in the Study of Normal Uterus and Uterine Lesions

Yang

et al. 2022

Front. Oncol.

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PurposeThe aim of this study is to evaluate the utility of magnetization transfer (MT) imaging in the study of normal uterus and common uterine lesions.MethodsThis prospective study enrolled 160 consecutive patients with suspected uterine lesions. MT ratio (MTR) map was obtained by pelvic MT imaging on a 3.0T MRI scanner. Patients confirmed by pathology were divided into microscopic lesion group and lesion group, according to whether the maximum diameter of the lesion was less than 5 mm. After evaluating and eliminating patients with poor image quality by a three-point Likert scale, MTR values of lesions and normal endometrium, myometrium, and cervix were independently measured on the MTR map by two radiologists. Inter-reader agreement was evaluated. MTR values were compared among different uterine lesions and normal uterine structures using the Mann–Whitney U test with Bonferroni correction. Receiver operating characteristic curve was performed. The correlations between age and MTR values were explored by Pearson correlation analyses.ResultsA total of 96 patients with 121 uterine lesions in the lesion group and 41 patients in the microscopic lesion group were measured. The MTR values among normal endometrium, myometrium, and cervix were statistical significant differences (P < 0.05). There were significant differences between endometrial cancer and normal endometrium and between cervical cancer and normal cervix (both P ≤ 0.001). Area under the curve (AUC) for diagnosing endometrial and cervical cancer were 0.73 and 0.86. Myometrial lesions had significantly higher MTR values than endometrial lesions and cervical cancer (both P < 0.001), and the AUC for differentiating myometrial lesions from them were 0.89 and 0.94. MTR values of endometrial cancer were significantly higher than those of cervical cancer (P = 0.02). There was a critical correlation between age and MTR values in endometrial cancer (r = 0.81, P = 0.04).ConclusionsMTR values showed significant differences among normal uterine structures. It was valuable for diagnosing and differentiating uterine cancer. MTR values could differentiate myometrial lesions from endometrial or cervical lesions.

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Multiparametric magnetic resonance imaging of endometrial polypoid lesions

Cited by 14 publications

References 34 publications

Understanding the Endometrium at Menopause

Understanding the Endometrium at Menopause

Diagnostic Value and Clinical Application of Diffusion‐Weighted Magnetic Resonance Imaging for Female Pelvic Lesions

Preliminary Application of Magnetization Transfer Imaging in the Study of Normal Uterus and Uterine Lesions

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