Trisomy 18 (Edwards Syndrome) and trisomy 13 (Patau Syndrome) are the second and third most common chromosomal trisomy disorders, respectively, and their characteristic syndromic features have been well described; however, to our knowledge, no prenatal studies have reported the fetal MR findings of trisomy 13 and trisomy 18. For this reason, typical fetal MR features of trisomy 13 and 18 remain incompletely characterized and its role and limitations in its prenatal evaluation and diagnosis are not established in the literature. In this cased-based, pictorial educational exhibit, we review the syndromic features of trisomy 13 and 18, and present the prenatal MR findings of six cases of trisomy 18 and three cases of trisomy 13, all confirmed by pre and/or postnatal genetic testing. We will discuss the strengths and weaknesses of prenatal MR imaging in the evaluation of trisomy 13 and 18 by comparing to prenatal ultrasound and utilizing postnatal imaging as a reference standard. After reviewing this presentation, the learner will: (1) Be able to recognize not only the individual fetal MR appearance of abnormalities associated with trisomy 13 and 18, but recognize them as part of a trisomy syndrome. (2) Understand the strengths, limitations, and pitfalls of prenatal MR in evaluation and diagnosis of trisomy 13 and 18. (4) Become familiar with the key points and measurements that should be used in the assessment and diagnosis of the fetus with trisomy 13 and 18 and be included in the radiology report to best assist the multidisciplinary care teams in counseling the pregnant patient and providing care of the fetus and neonate with trisomy 13 and 18. Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Mcclure Meghan, Beavers Angela

Keywords: Trisomy, Patau syndrome, Edwards Syndrome

Omental infarction and epiploic appendagitis are subtypes of a broader entity of abdominal fat necrosis known as intraperitoneal focal fat infarction (IFFI). IFFI is an uncommon cause of acute abdominal pain in children, and a known mimicker of acute appendicitis. The CT appearance of IFFI is well described, but the appearance is less familiar on MRI and is a potential imaging pitfall. Familiarity with the MRI appearance of IFFI is particularly timely, given the growing use of MRI in the evaluation of right lower quadrant pain in children. The purpose of this educational exhibit is to review the clinical history, pathologic appearance and treatment of IFFI, and describe MRI features that will allow the radiologist to make the correct diagnosis. Read More

Meeting name: SPR 2018 Annual Meeting & Postgraduate Course , 2018

Authors: Mcclure Meghan, Abdessalam Shahab, Powers Andria

Keywords: omental infarction, epiploic appendagitis, appendicitis