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Society for Pediatric Radiology – Poster Archive

Victor Ho-fung

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Showing 8 Abstracts.

Humeral lesser tuberosity avulsion fractures (LTAF) are rare injuries in children. Limited information is available describing MRI characteristics. We aim to describe demographics, mechanism of injury, and MRI findings of LTAF. Read More

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

Authors: Bedoya Maria, Barrera Christian, Ho-fung Victor

Keywords: Avulsion, MRI

In the diagnosis of acute appendicitis, unenhanced MRI provides an efficient and comprehensive evaluation of the appendix. However, on the daily clinical basis, there are cases that generate a diagnostic dilemma with subtle/indeterminate inflammatory changes. For these questionable cases, the morphology of the appendix could play a role as an aid for the radiologist to increase the confidence diagnosing or ruling out acute appendicitis. The aim of this study is to evaluate the morphology of the appendix as an additional tool for the diagnosis of appendicitis. Read More

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

Authors: Bedoya Maria, Barrera Christian, Ho-fung Victor, States Lisa

Keywords: MRI, Appendicitis

<b>Background:</b> Sonographic techniques are simple and safe. The utility and clinical value of dynamic sonographic evaluation of the glenohumeral joint in infants with brachial plexus injury (BPBI) has been described since the late 1990's. However, this technique remains an underutilized tool in most imaging practices. Brachial plexus injury during the birthing process can lead to glenoid dysplasia, posterior shoulder subluxation and significant morbidity if left untreated. Imaging evaluation of the degree of deformity is paramount to guide clinical treatment and the follow-up of complicated cases. Imaging techniques include MRI, CT and US. Shoulder ultrasound provides a dynamic, noninvasive method of evaluation. It has also been our experience that this imaging technique can be mastered by the Sonographer and supported with accurate interpretation by the Radiologist. <b>Purpose:</b> Describe the imaging features of glenohumeral joint dysplasia due to BPBI with emphasis on ultrasound technique. Review step-by-step dynamic sonographic evaluation of the glenohumeral joint in BPBI with emphasis on correct positioning of the patient to ensure consistency and reproducible quality imaging. Improve both confidence and independent evaluation of patients through this presentation by the sonographer. Read More

Meeting name: SPR 2019 Annual Meeting & Postgraduate Course , 2019

Authors: Hutchinson Marcy, Kozak Brandi, Ho-fung Victor, Chauvin Nancy

Keywords: glenohumeral, brachial plexus birth injury (BPBI)

Dysplasia epiphysialis hemimelica (DEH), also known as Trevor’s disease, is a rare developmental bone disease which typically involves the epiphyseal cartilage of the lower extremities. The disease is characterized by abnormal overgrowth which may lead to progressive limb deformity and gait dysfunction. Imaging is crucial in the diagnosis and the appearance maybe confused with other musculoskeletal dysplasias. This exhibit will review the pathogenesis of DEH and highlight the characteristic imaging features using multiple modalities. Read More

Meeting name: SPR 2017 Annual Meeting & Categorical Course , 2017

Authors: Gongidi Preetam, Chauvin Nancy, Ho-fung Victor, Maya Carolina

Keywords: Trevor's, Dysplasia epiphysialis hemimelica, Trevors

Muscle hernias occur when a muscle protrudes through a fascial defect into the subcutaneous fat, hence presenting as a subcutaneous palpable mass. While the palpable abnormality is usually asymptomatic, it can also present with pain. Muscles hernias occur most often in adolescents and young adults and might be due to sporting activities, trauma, or overlying fascia weakness. Because of its dynamic real-time imaging capabilities, ultrasound is best suited for the evaluation of these lesions. Moreover, a definitive diagnosis can be reached with ultrasound hence avoding additional time and expenses while promptly providing reassurance to the patients and families. US has excellent sensitivity and specificity for the identification of muscles hernias. However, baseline knowledge of this disease as well as close attention to technique are needed to reliably reach the proper diagnosis. Our educational poster will: 1. Summarize proper US equipment, technique and protocol for diagnosing muscle hernia 2. Discuss advantages and benefits of US over other imaging modalities 3. Illustrate the sonographic findings of muscles hernias Read More

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

Authors: Schneeman Libby, Hutchinson Marcy, Ho-fung Victor, Otero Hansel

Keywords: muscle, hernia, ultrasound

Mensicocapsular injury (ramp lesion) occurs in 9-17% of ACL tears. These injuries are a risk factor for instability and failure following ACL reconstruction. The far peripheral location has contributed to under-diagnosis during routine anterior-approach arthroscopy. While there has been increasing interest in the identification and treatment of these lesions in adults, there is a paucity of published data on children and the proposed MRI features lack specificity. Therefore, the purpose of this study was to investigate the performance of MRI criteria for identifying ramp lesions in children. Read More

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

Authors: Nguyen Jie, Bram Joshua, Ganley Theodore, Lawrence John, Patel Maya, Ho-fung Victor

Keywords: Knee, MRI, ramp

Gaucher disease is an inherited metabolic disorder due deficiency of the lysosomal enzyme β-glucocerebrosidase that results in the accumulation of abnormal macrophages (“Gaucher cells”) within multiple organs, most conspicuously affecting the liver, spleen and bone marrow. As the diagnosis is increasingly made during childhood and young adulthood, pediatric radiologists should be familiar with imaging features of Gaucher disease and its complications. Visceromegaly consisting of hepatosplenomegaly is a hallmark of Gaucher disease and uniformly present in cohorts of pediatric patients. In addition, bone marrow involvement with ‘Erlenmeyer flasks’ have been long recognized as part of this disease, although the classic radiographic finding is not present until adulthood. Marrow involvement confers significant morbidity for these patients with pain, bone infarcts and pathologic fracture. Traditionally, imaging of disease severity has been based on hepatic and splenic visceral organ enlargement and/or qualitative assessment of bone marrow involvement. However, advances in the understanding of Gaucher disease and observations of elevated ferritin levels and increased risk of hepatic fibrosis emphasize the importance of more comprehensive assessment of liver involvement beyond simple enlargement. Moreover, quantitative MRI assessment of bone fat-fractions also may have a role in assessing marrow involvement. These methods of disease assessment are important in addressing management decisions regarding enzyme replacement and substrate reduction therapy. Read More

Meeting name: SPR 2019 Annual Meeting & Postgraduate Course , 2019

Authors: Degnan Andrew, Serai Suraj, Ho-fung Victor, Barrera Christian, Wang Dah-jyuu, Ahrens-nicklas Rebecca, Ficicioglu Can

Keywords: Gaucher disease, bone marrow, hepatic involvement