The diagnosis of malrotation is heavily reliant on imaging. Upper GI series remain the gold standard with the normal position of the duodenojejunal junction lateral to the left-sided pedicles of the vertebral body, at the level of the duodenal bulb on frontal views and posterior (retroperitoneal) on lateral views. However, a variety of conditions might influence the position of the duodenojejunal junction, potentially leading to a misdiagnosis of malrotation. Such conditions include gastric over distension, splenomegaly, renal or retroperitoneal tumors, liver transplant, small bowel obstruction, the presence of properly or malpositioned enteric tubes and scoliosis. All of these may cause the duodenojejunal junction to be displaced. We present a series of cases highlighting conditions that mimic malrotation to increase the practicing radiologist awareness and help minimize interpretation errors. Read More

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

Authors: Smitthimedhin Anilawan, Suarez Angela, Webb Ryan, Otero Hansel

Keywords: malrotation, Upper GI study, mimickers

Renal artery stenosis (RAS) is an important cause of hypertension in children. When suspected, imaging options include Doppler US, CTA and MRA. However, conventional angiography remains the gold standard. We investigate the accuracy and inter-reader reliability of CTA in children with suspected renal artery stenosis. Read More

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

Authors: Smitthimedhin Anilawan, Otero Hansel, Cahill Anne Marie, Durand Rachelle

Keywords: Renal Artery Stenosis, CTA, Angiography

The renal artery ostial anatomy, balloon profile, and stent deployment are all challenges of complex procedural RAS planning in children. In such cases there is an increased risk of renal artery rupture secondary to angioplasty requiring placement of a covered stent. This study aims to establish the feasibility of simulating renovascular stent deployment in three 3D printed pediatric patient-specific RAS endovascular phantoms. Read More

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

Authors: Smitthimedhin Anilawan, Silvestro Elizabeth, Shellikeri Sphoorti, Whitaker Jayme, Cahill Anne Marie

Keywords: 3D Printing, Stent, Simulation

Conventional Doppler US is known to have low sensitivity for the diagnosis of renal artery stenosis (RAS), in particular segmental renovascular disease. This study aims to determine if contrast-enhanced US (CEUS) can quantitatively provide assessment of renal arterial and parenchymal perfusion pre- and post- renal artery angioplasty in children and potentially be used as a follow-up imaging tool. Read More

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

Authors: Smitthimedhin Anilawan, Sridharan Anush, Darge Kassa, Back Susan, Cahill Anne Marie

Keywords: CEUS, Renal Artery Stenosis, Contrast-Enhanced Ultrasound

Lymphoma is the most common mediastinal mass in children. Obtaining tissue for diagnosis can be challenging due to reported low diagnostic yield and risk of cardiorespiratory collapse, especially in the setting of anesthesia. We report our experience with biopsy of mediastinal masses, report the diagnostic rate for lymphoma and biopsy/anesthetic complications related to the procedure. Read More

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

Authors: Alam Aisha, Maier Pia, Smitthimedhin Anilawan, Acord Michael, Cahill Anne Marie, Vatsky Seth

Keywords: Image guided biopsy, Mediastinal Mass, Lymphoma

Contrast-enhanced ultrasound (CEUS) and shear wave elastography (SWE) have been widely studied in adult thyroid disease. However, evaluation of thyroid nodules using these tools in pediatric patients has yet to be published. We aim to evaluate the feasibility and safety of CEUS and SWE for thyroid nodules in children at the time of cytologic biopsy. Read More

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

Authors: Smitthimedhin Anilawan, Krishnamurthy Ganesh, Sridharan Anush, Poznick Laura, Durand Rachelle, Whitaker Jayme, Escobar Fernando, Bauer Andrew, Cahill Anne Marie

Keywords: CEUS, Elastography, Thyroid