Oct 20, 2024 · Uterine leiomyomas, also known as uterine fibroids, are benign tumors of myometrial origin and are the most common solid benign uterine neoplasms. They are a common incidental finding on imaging and rarely cause diagnostic dilemma.

Jun 1, 2023 · Comparison of the diagnostic accuracy of contrast-enhanced MRI and diffusion-weighted MRI in the differentiation between uterine leiomyosarcoma/smooth muscle tumor with uncertain malignant potential and benign leiomyoma.

Pelvic MRI for Fibroids: The Most Reliable Diagnostic Method. Some patients wonder why they need to undergo a pelvic MRI to confirm fibroids when they have had a pelvic ultrasound. While ultrasound imaging can diagnose fibroids, it does not offer the 3-D resolution of an MRI.

Sep 23, 2015 · In summary, although certain MRI features indicate different types of myoma degeneration, there are no definitive imaging findings that reliably differentiate ordinary leiomyomas from leiomyoma variants.

Oct 24, 2018 · MRI can distinguish between usual leiomyomas and florid LMSs in most cases. Nevertheless, overlap persists between imaging features of degenerated leiomyomas, STUMP, and LMSs, with the use of standard MR sequences.

Aug 15, 2024 · Leiomyoma is a benign smooth muscle (myometrial) tumor, most commonly found in the uterus. Leiomyoma is classified by location: dartoic leiomyoma - arises from the dartos muscle of the nipple or genitals.

Oct 4, 2022 · Evidence supports the use of T2-weighted, diffusion-weighted (b value of 1000 sec/mm 2), and apparent diffusion coefficient MRI for noninvasive preoperative evaluation for the possibility of uterine leiomyosarcoma and extrauterine disease in symptomatic women.

This pictorial review aims to familiarize radiologists with MRI appearances of different leiomyoma subtypes, correlated with their key histopathological features. MRI is the best imaging technique to distinguish benign leiomyomas versus leiomyosarcomas.

Although magnetic resonance imaging (MRI) is often used to establish the proper diagnosis, currently, definitive differentiation between uterine sarcoma and degenerated uterine leiomyoma remains difficult. However, it is possible to extract a tumor suspected to be a sarcoma.

Sep 1, 1999 · Magnetic resonance (MR) imaging is the most accurate imaging technique for detection and localization of leiomyomas.

The UMD is the largest publicly available uterine MRI dataset to date including 300 cases of uterine myoma T2-weighted imaging (T2WI) sagittal patient images and their corresponding annotation files.

Sep 1, 2017 · Albeit leiomyomas are generally detected by transabdominal and endovaginal ultrasound, MRI is highly accurate and increasingly used to detect, measure and categorise leiomyomas as submucosal, intramural or subserosal before therapeutic choice between myomectomy (open, laparoscopic or hysteroscopic), hysterectomy, GnRH-analog therapy and ...

Ultrasound is the first-line imaging modality for characterizing uterine fibroids. However, MRI allows for high-resolution, multiplanar visualization of leiomyomata that afords a more accurate assessment than ultrasound, particularly when fibroids are numerous.

MRI has a sensitivity of 86-92%, a specificity of 100%, and an accuracy of 97% in the evaluation of probable fibroids. In one study, MRI findings were assessed in helping predict early...

MRI is the best modality for assessing uterine sarcomas with CT used for assessment of distant spread. Atypical leiomyomas which have undergone degeneration, are cellular, metastasising or intravascular leiomyomas all have at least one key feature that can mimic diagnosis of LMS on MRI but combining MR imaging features and taking into account ...

LMS represent more than 50% of uterine sarcomas and most often, they have malignant MRI findings : large or irregular masses on T2-weighted images (opposite to the myoma), with heterogeneous signal and hypersignal areas.

Oct 4, 2012 · MR imaging of uterine leiomyomas before and after embolization is discussed, with emphasis on its use in demonstrating and localizing leiomyomas, differentiating leiomyomas from other conditions, assisting in the planning of embolization, and monitoring the response to …

May 1, 2014 · MRI has been used to identify and localize myomas in evaluating patients for myomectomy, UAE, and MRgFUS. MRI uses the body's natural magnetic properties to produce images from any portion of the body including the abdomen and pelvis.

• MRI allows comprehensive mapping of size and distribution of leiomyomas. • Basic MRI comprise T2W and T1W sequences centered to the uterus. • Standardized reporting ensures pivotal information on leiomyomas, the uterus and differential diagnosis.

May 14, 2024 · Ultrasound and MRI features are in keeping with an intracavitary submucosal fibroid. It is the least common and the most symptomatic type of uterine fibroids. On MRI, it is indenting the myometrium, isointense to the myometrium not the endometrium and has a low signal differentiating it from endometrial polyp.