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Society for Pediatric Radiology – Poster Archive

Showing 3 Abstracts.

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.
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Authors:  Mahomed Nasreen

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

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

Thapa Mahesh,  Ojeda Patricia,  Otjen Jeffrey,  Ngo Anh-vu,  Callahan Michael

Final Pr. ID: Poster #: EDU-013 (S)

The purpose of this educational presentation is to demonstrate ultrasound technique and characteristic sonographic findings of common superficial pediatric extremity soft tissue lesions. We also offer advice on how to differentiate benign from malignant lestions. Children frequently present with unexplained “lumps and bumps” on their extremities. These lesions are often invisible on radiography; MRI might require use of sedation; and CT exposes the child to radiation and often requires iodinated contrast. Ultrasound (US) is a cost-effective, radiation-free, and dynamic method to evaluate superficial soft tissue lesions.

We discuss choice of transducer based on lesion location. We explain why a multifrequency transducer, which allows for the evaluation of both superficial (higher frequency spectrum of the transducer) and deeper (lower frequency spectrum of the transducer) components of the lesion is important. The use of compound imaging is explained, as multiple angles of insonation are combined to provide a more complete image of the structure being interrogated. For lesions involving the hands or feet, we explain the water-bath technique. Water is an excellent medium for ultrasound waves and will minimize artifacts from air and inadequate surface contact that plague evaluation of the distal extremities.

We then discuss characteristic sonographic appearance of the following conditions: vascular anomalies, osteomyelitis and subperiosteal abscess, hematoma, subcutaneous granuloma annulare, Pilomatricoma, lipoma, ganglion and Baker cyst, muscle hernia, osteochondroma, foreign bodies, and malignant conditions.
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Authors:  Thapa Mahesh , Ojeda Patricia , Otjen Jeffrey , Ngo Anh-vu , Callahan Michael

Keywords:  ultrasound, benigh, malignant