Patel Akash,  States Lisa

Final Pr. ID: Poster #: EDU-082

With the increased demand and utilization of PET/MRI in oncologic imaging, there is an ever increasing database of non-malignant pathology that has not yet been described on PET/MRI. Furthermore, the pediatric population provides an even more unique breadth of pathology that is often only seen in this age group. It is important to be able to accurately identify these common pathologies so as to not mistake them for malignancy and to prevent unnecessary follow up imaging studies and further invasive diagnostic procedures.

For this educational exhibit we review over 200 clinical pediatric 18F-FDG PET/MRs performed at our institution and highlight the most common and most interesting cases of FDG-avid non-malignant pathology.

Listed below are some of the cases to be included in the poster:
-Benign FDG avid bone tumors including non-ossifying fibromas
-Benign causes of FDG avid lymphadenopathy including cat scratch disease
-Benign causes of FDG avid lung lesions including aspiration pneumonia
-Benign causes of gastro-intestinal FDG uptake including pseudomembranous colitis
-Benign FDG avid infectious pathologies including a liver abscess Read More

Authors:  Patel Akash , States Lisa

Keywords:  PET/MR, PET/MRI, benign

Mahomed Nasreen

Final Pr. ID: Poster #: EDU-022

Pancreatic tumours are a rare and unusual entity in pediatric patients accounting for less than 0.2% of malignant paediatric deaths. The limited number of cases and the diversity of histopathologic subtypes have made it difficult to predict prognosis which differs significantly from adults. In general, pancreatic tumours that occur in children are well circumscribed and partially encapsulated. Their relatively soft nature and encapsulated rather than infiltrative growth pattern allow them to become large prior to clinical presentation. Owing to their large size, central necrosis is common.

Causes of pancreatic masses in children are usually benign and include pancreatic pseudocyst, congenital pancreatic cyst, dermoid cyst, hydatid cyst, islet cell tumours, lymphangioma, pancreatic hemangioendothelioma and cystadenomas. Causes of malignant pancreatic masses in children (which are rare) include pancreatoblastoma, lymphoma, neuroblastoma, solid-pseudopapillary tumour and rhabdomyosarcoma.

We present an algorithmic approach to a pancreatic mass in a child, describing the common imaging features in each of the benign and malignant causes of pancreatic mass in a child with radiologic cases. We also report a very rare case of a pancreatic kaposiform hemangioendothelioma in an 8 month old boy who presented with Kasabach Merritt syndrome.
Read More

Authors:  Mahomed Nasreen

Keywords:  pancreatic tumours, pancreatic kaposiform hemangioendothelioma, benign, malignant, children

Cho Joo,  Sohn Jae Ho,  Vargas Sara,  Lee Edward

Final Pr. ID: Poster #: SCI-016

To determine CT imaging features of benign intra-pulmonary lymph nodes in pediatric patients. Read More

Authors:  Cho Joo , Sohn Jae Ho , Vargas Sara , Lee Edward

Keywords:  lymph node, benign, triangular

Keehn Brian,  Patel Mittun,  Peterson Michael,  Dance Logan,  Biyyam Deepa,  Pokorney Amber,  Barnes Craig

Final Pr. ID: Poster #: EDU-071

Radiologists have classically been taught the imaging findings of skeletal “Don’t touch lesions” on radiographs. The radiologist's goal is to best characterize these boney lesions and avoid tissue biopsy, especially since some bone lesions are misleading when viewed histologically, with nonaggressive lesions appearing aggressive. Many of these classical “Don’t touch lesions” are now being further evaluated with contrast enhanced magnetic resonance imaging (MRI). MRI findings of these radiographically classical lesions are not as well understood by radiologists with less MRI experience. We will provide an education exhibit to display MRI and corresponding radiographic appearances of characteristic “Don’t touch lesions”. Read More

Authors:  Keehn Brian , Patel Mittun , Peterson Michael , Dance Logan , Biyyam Deepa , Pokorney Amber , Barnes Craig

Keywords:  Don't touch lesions, benign bone lesions

Gendler Liya,  Ho-fung Victor,  Degnan Andrew,  Sze Raymond,  Nguyen Michael,  Hong Shijie,  Chang Benjamin,  Arkader Alexandre,  Nguyen Jie

Final Pr. ID: Alt #: 003

Osteoid osteomas of the hands and feet can be very challenging diagnoses to make. We attempt to assess diagnostic features to aid in detection and prevent delay of treatment. Read More

Authors:  Gendler Liya , Ho-fung Victor , Degnan Andrew , Sze Raymond , Nguyen Michael , Hong Shijie , Chang Benjamin , Arkader Alexandre , Nguyen Jie

Keywords:  Osteoid Osteoma, Benign Bone Tumor, MRI

Sandigo Saballos Isabela,  Arguello Fletes Gladys,  Fenton Laura

Final Pr. ID: Poster #: CR-002

Histiocytic necrotizing lymphadenitis, also known as Kikuchi-Fujimoto disease, is a benign, self-limited disorder, associated with B symptoms (fever, weight loss) and painful lymphadenopathy. The combination of lymphadenopathy with B symptoms in the pediatric population raises suspicion for malignant diseases such as lymphoma, neuroblastoma, and rhabdomyosarcoma. We evaluated a series of children with biopsy-proven histiocytic necrotizing lymphadenitis to assess for unique imaging characteristics. Read More

Authors:  Sandigo Saballos Isabela , Arguello Fletes Gladys , Fenton Laura

Keywords:  Benign causes of lymphadenopathy, CT Perinodal infiltration and necrosis, CT Nodal Necrosis

Bates Nicholas,  Nurkic Tarik,  Sharma Priya,  Rajderkar Dhanashree

Final Pr. ID: Poster #: EDU-116

There are many recognized causes of benign bony lesions in pediatric age group. Some of the lesions are commonly encountered, and some of them are very rare. The purpose of our exhibit is to illustrate a complete spectrum of the benign bony pathologies including 'Donot touch lesions'. Read More

Authors:  Bates Nicholas , Nurkic Tarik , Sharma Priya , Rajderkar Dhanashree

Keywords:  Benign, Multifocal, Do No touch lesions, Multifocal benign lesions in Pediatric Population, Benign bony lesions

Biyyam Deepa,  Patel Mittun,  Dance Logan,  Dao Tuan,  Youssfi Mostafa,  Towbin Richard

Final Pr. ID: Poster #: EDU-096

After reviewing the exhibit, participants will be able to recognize suspicious and non-suspicious ultrasound (US) features of pediatric thyroid nodules which will help to triage nodules that need a biopsy. Read More

Authors:  Biyyam Deepa , Patel Mittun , Dance Logan , Dao Tuan , Youssfi Mostafa , Towbin Richard

Keywords:  thyroid, nodules, benign, malignant, biopsy

Haws M Edward,  Linscott Luke,  Thomas Cameron,  Kline-fath Beth

Final Pr. ID: Poster #: SCI-067

Benign macrocrania (BM) is primarily diagnosed by ultrasound (US). Many children with BM have developmental delay which triggers neurosurgical evaluation and CT or MR brain imaging due to concerns for communicating hydrocephalus. The purpose of this study was to determine if CT and/or MR imaging changed the diagnosis or management in those children whose primary complaint was macrocephaly with or without developmental delay. Read More

Authors:  Haws M Edward , Linscott Luke , Thomas Cameron , Kline-fath Beth

Keywords:  Benign Macrocrania, Ultrasound, developmental delay, MRI

Gleason Miranda,  Sharma Pooja,  Omar Lena,  Pfeifer Cory,  Kwon Jeannie

Final Pr. ID: Poster #: SCI-035

The purpose of this exhibit is to demonstrate the characteristic sonographic appearance of benign masses in the pediatric population in order to address the wide variation in management of palpable, hypoechoic, circumscribed masses seen on ultrasound. Currently, management includes fine needle aspiration/core needle biopsy, excision, imaging follow-up, and reassurance. This exhibit proposes guidelines for management of palpable pediatric breast masses with ultrasound findings most suggestive of fibroadenomas. Read More

Authors:  Gleason Miranda , Sharma Pooja , Omar Lena , Pfeifer Cory , Kwon Jeannie

Keywords:  Breast, Mass, Benign