Incidence of New, Nonphysiologic Maternal Findings on Fetal Magnetic Resonance Imaging.

Objective:  Fetal magnetic resonance imaging (MRI) is increasingly used for evaluation of fetal anomalies, and rates of incidental maternal findings are not well characterized. Our objective was to evaluate the rate of incidental maternal findings at the time of antenatal MRI performed for fetal indications.

Study Design:  This was a retrospective cohort study that included all fetal MRIs performed between 2018 and 2023 at a single tertiary care institution with a multidisciplinary fetal diagnosis and treatment center.

Assessing Adherence to US LI-RADS Follow-up Recommendations in Vulnerable Patients Undergoing Hepatocellular Carcinoma Surveillance.

Purpose To assess adherence to the US Liver Imaging Reporting and Data System (LI-RADS) recommendations for hepatocellular carcinoma (HCC) surveillance and associated patient-level factors in a vulnerable, diverse patient sample. Materials and Methods The radiology report database was queried retrospectively for patients who underwent US LI-RADS-based surveillance examinations at a single institution between June 1, 2020, and February 28, 2021. Initial US and follow-up liver imaging were included.

Boba sign with a twist - A variant presentation of a mature cystic teratoma complicated by torsion and rupture.

While mature cystic teratomas are relatively common ovarian neoplasms typically comprising of multiple embryologic cell types, a specific monodermal subtype involving thyroid tissue, struma ovarii, can rarely be seen. This case reviews typical imaging characteristics with MRI and ultrasound of struma ovarii and details possible complications from these masses with intraoperative and histologic correlation.

US-guided Interventions to Diagnose and Treat Gynecologic and First-Trimester Disease.

US-guided procedures have an essential role in the diagnosis and treatment of multiple obstetric and gynecologic conditions, can be performed with either transvaginal or transabdominal approaches, and include biopsy of masses, aspiration of fluid collections, injection of therapeutic materials, and saline-infused sonohysterography and hysterosalpingo contrast-enhanced sonography. RSNA, 2021.

Pearls and Pitfalls in Imaging of Pelvic Adnexal Torsion: Seven Tips to Tell It's Twisted.

is a collective term referring to twisting of an ovary, fallopian tube, or paraovarian cyst on its axis with varying degrees of vascular compromise. Although it is the fifth most common gynecologic emergency, the diagnosis is challenging and often missed due to symptoms, physical examination findings, and imaging features that are nonspecific. Delay in salvage surgery may lead to ovarian or tubal loss, dysfunction, and infertility.

Ultrasound features help identify patients who can undergo noninvasive management for suspected retained products of conception: a single institutional experience.

Objectives: To evaluate ultrasound (US) features associated with successful noninvasive management for suspected retained products of conception (RPOC).

Methods: In this IRB-approved retrospective study, the radiology report database was queried for pelvic US with keywords of postpartum hemorrhage (PPH) and/or RPOC over a 2-year period. Follow-up exams, US exams without clinical follow-up, suboptimal image quality, and > 1 year from delivery or pregnancy termination were excluded.

Imaging of Postpartum/Peripartum Complications.

There are various complications that can occur in the postpartum period, including pain, bleeding, and infection. These include complications related to cesarean section, postpartum hemorrhage and hematomas, bladder injury, torsion and uterine dehiscence, and rupture. It is important the radiologist is aware of these entities and the associated imaging features to help guide timely and appropriate management.

Congenital Oral Masses: An Anatomic Approach to Diagnosis.

Although congenital oral masses are rare, they are readily detectable during fetal US screening. Most congenital oral masses are benign, but some may cause mechanical airway obstruction, resulting in poor outcomes at delivery. The radiologist's ability to describe these abnormalities and their physiologic sequelae accurately can have a substantial effect on perinatal treatment.

Placenta accreta spectrum: value of placental bulge as a sign of myometrial invasion on MR imaging.

Purpose: To evaluate correlation of "placental bulge sign" with myometrial invasion in placenta accreta spectrum (PAS) disorders. Placental bulge is defined as deviation of external uterine contour from expected plane caused by abnormal outward bulge of placental tissue.

Materials And Methods: In this IRB-approved, retrospective study, all patients undergoing MRI for PAS disorders between March 2014 and 2018 were included.

Interaction of the Vp3 nuclear localization signal with the importin alpha 2/beta heterodimer directs nuclear entry of infecting simian virus 40.

For nuclear entry of large nucleoprotein complexes, it is thought that one key nuclear localization signal (NLS) of a protein component becomes exposed to mediate importin recognition. We show that the nuclear entry of simian virus 40 involves a dynamic interplay between two distinct interiorly situated capsid NLSs, the Vp1 NLS and the Vp3 NLS, and the selective exposure and importin recognition of the Vp3 NLS. The Vp3 NLS-null mutants assembled normally into virion-like particles (VLP) in mutant DNA-transfected cells.