Sharma Priya,  Loubriel Daphne,  Estrin Yvonne,  Rajderkar Dhanashree

Final Pr. ID: Poster #: EDU-119

Learning objectives: This educational exhibit will review atypical ovarian neoplasms in the pediatric population. We will discuss the epidemiology, clinical presentation, multimodality imaging findings as seen on ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography/computed tomography (PET/CT) of these rare adnexal entities. Read More

Authors:  Sharma Priya , Loubriel Daphne , Estrin Yvonne , Rajderkar Dhanashree

Keywords:  Atypical ovarian masses, Adnexa, Ovarian, tumors

Goldwasser Bernard,  Malik Archana,  Poletto Erica,  Urbine Jacqueline,  Kazmi Faaiza,  Mallon Mary

Final Pr. ID: Poster #: EDU-087

When evaluating the pediatric neuroaxis, it is important to include the extra-axial spaces in the radiologists’ search pattern. The purpose of the presentation is to show a multimodality pictorial review of characteristic findings of extra-axial CNS lesions detected on CT and MRI. Read More

Authors:  Goldwasser Bernard , Malik Archana , Poletto Erica , Urbine Jacqueline , Kazmi Faaiza , Mallon Mary

Keywords:  dural mass, extra-axial masses

Huynh Minh-huy,  Didier Ryne,  Feygin Tamara,  Paidas Teefey Christina,  Coleman Beverly,  Oliver Edward

Final Pr. ID: Poster #: CR-006

Kaposiform hemangioendotheliomas (KHE) are rare, locally aggressive vascular neoplasms. KHE most commonly arise from the extremities and less frequently the trunk and head and neck regions. Kasabach-Merritt phenomenon complicates 70% of cases. Three cases of KHE underwent prenatal evaluation and postnatal management at our center. We report the imaging findings that may allow for improved prenatal diagnosis.

Case 1: 31-year-old G4P2 evaluated for cervicofacial mass at 24 weeks 5 days. Fetal ultrasound demonstrated a large, infiltrative, predominately solid, mildly heterogeneous mass with a volume of 62 mL. No calcifications or lesion hypervascularity were present. Same day MRI confirmed an infiltrative, predominately solid mass with mild heterogenous T2 signal and no internal flow voids. Repeat MRI at 34 weeks 5 days revealed increased lesion heterogeneity and internal flow voids. US at 36 weeks 3 days demonstrated a volume of 525 mL and lesion hypervascularity. Delivery was at 36 weeks 5 days by EXIT procedure. Kasabach-Merritt phenomenon developed, and postnatal biopsy was consistent with KHE.

Case 2: 35-year-old G2P1 evaluated for cervical mass at 40 weeks 4 days. Fetal ultrasound demonstrated a large, infiltrative predominately solid, mildly heterogeneous mass with a volume of 180 mL. Calcifications and hypervascularity were present. Fetal MRI was not performed. Delivery the next day was by cesarean section. Kasabach-Merritt phenomenon developed. Postnatal biopsy was consistent with KHE.

Case 3: 30-year-old G1P0 evaluated for cervical mass at 38 weeks 1 day. Fetal ultrasound demonstrated a large, predominately solid, heterogeneous mass with a volume of 242 mL. Calcifications and hypervascularity were present. Same day fetal MRI confirmed an infiltrative, predominately solid mass with heterogeneous T2 signal and internal flow voids. Delivery was at 38 weeks 3 days by cesarean section. Kasabach-Merritt phenomenon developed, and postnatal MRI and clinical findings were consistent with KHE. Read More

Authors:  Huynh Minh-huy , Didier Ryne , Feygin Tamara , Paidas Teefey Christina , Coleman Beverly , Oliver Edward

Keywords:  Kaposiform hemangioendothelioma, cervical masses

Ruoss Justin,  Sharma Priya,  Rajderkar Dhanashree

Final Pr. ID: Poster #: EDU-121

In this educational exhibit we will use a series of cases from our institution to review the approach to non-mediastinal solid and solid-like lesions found in the pediatric chest. We will use a multimodality approach and discuss differentials, key imaging features and the pathologic basis of these lesions. Read More

Authors:  Ruoss Justin , Sharma Priya , Rajderkar Dhanashree

Keywords:  Chest Masses, Pulmonary Tumors, Persistent Wheezing

Siu Navarro Youck Jen,  Poletto Erica,  Malik Archana,  Mallon Mea

Final Pr. ID: Poster #: EDU-061

A neck mass is a frequent chief complaint in the pediatric population and includes a wide variety of etiologies. The age of the child, symptoms and physical exam findings may narrow the differential diagnoses. The radiologist can aid in diagnosis and management by guiding the selection of the appropriate imaging modality. It is important for the radiologist to recognize the features of common and rarer neck masses in children. This pictorial review will describe the multimodal imaging features of a variety of pediatric neck masses in four categories:

1. Congenital/developmental
Thyroglossal duct cyst
Branchial cyst
Dermoid cyst
Epidermoid cyst
Venolymphatic malformation
Cervical extension of thymus

2. Infection/inflammatory
Lymphadenitis
Retropharyngeal/peritonsillar abscess

3. Neoplastic
Hemangioma
Neurofibroma
Neuroblastoma/ganglioneuroblastoma
Rhabdomyosarcoma
Lymphoma
Thyroid carcinoma
Teratoma

4. Miscellaneous
Ranula
Fibromatosis colli Read More

Authors:  Siu Navarro Youck Jen , Poletto Erica , Malik Archana , Mallon Mea

Keywords:  Neck Masses

Sandhu Preet,  Shah Jignesh

Final Pr. ID: Poster #: CR-078

We present a case of a rare entity, ROHHAD syndrome. A 2 year and 11 month old previously healthy caucasian girl was seen at an outside hospital, and was noticed to have hypothermia (90-93 degree F), bradycardia (heart rate of 30), and decreased blood oxygen saturation (40%). She was transferred to our emergency room. Past medical history was positive for viral meningitis in infancy, and asthma. Additional history of sudden weight gain since 1 ½ years of age was noted. Concern for ROHHAD syndrome, a rare entity was raised in light of sudden weight gain, and signs of autonomic dysfunction. Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) of the brain were performed, which were positive for mild parenchymal volume loss. CT of the abdomen was performed which showed multiple enhancing left perinephric and paraspinal masses, concerning for neural crest tumors. Iodine-123-Meta-iodobenzylguanidine (MIBG) scan was performed which was positive. Urine Homovanillic and Vanillylmandelic acid/g creatinine were elevated. Patient underwent resection of left perinephric masses and pathology showed neuroblastoma with intermixed Ganglioneuroblastoma elements.
ROHHAD is a rare disease and only 100 cases have been reported. Anatomic malformations of Autonomic nervous system including tumors of neural crest origin occur in 40 % of cases. Term ROHHADNET- Rapid Onset obesity with Hypothalamic Dysregulation, Hypoventilation and Autonomic Dysregulation and neuroendocrine tumors has been used to describe these cases. Read More

Authors:  Sandhu Preet , Shah Jignesh

Keywords:  ROHHAD, weight gain, perinephric masses

Medina Perez Mariangeles,  Gupta Saurabh,  Badar Zain,  Salastekar Ninad,  Majmudar Anand

Final Pr. ID: Poster #: EDU-075

Neck masses are commonly seen in the pediatric population and are a frequent reason for pediatric consults and can represent a diagnostic challenge. Although there is a broad spectrum of differentials, the vast majority of these lesions are benign, however malignant etiologies can also be encountered. Ultrasonography has become the first-line imaging modality in the evaluation of neck masses, given the ability to avoid radiation, wide availability and cost-effectiveness. Also, ultrasound represents an option when trying to avoid contrast administration or sedation.

The main teaching points of this exhibit will be:
1. Review variety of congenital and acquired neck masses in the pediatric patients.
2. Discuss imaging features and approach to various vascular, congenital abnormalities, benign and malignant tumors and other acquired abnormalities with Ultrasound.
3. Discuss the role of anatomic imaging in management.

A case-based pictorial review will be used to demonstrate:
1. Approach to vascular tumors and malformations based on clinical and imaging features including congenital, infantile hemangioma, low flow, various types of vascular malformations, locally aggressive lesions like kaposiform hemangioendothelioma, malignant tumors likely angiosarcoma and hemangioendothelioma.
2. Reviewing salient features of various congenital and acquired abnormalities including branchial cleft cysts, thyroglossal duct cysts, congenital goiter and midline frontal masses.
3. Discuss imaging features of other benign and malignant masses including teratomas, primary cervical neuroblastomas, soft tissue tumors (myofibroblastic), lipoblastoma. Also malignant tumors like fibrosarcoma, rhabdomyosarcoma.
4. Describe masses which mimic tumors such as fibromatosis coli and ectopic thymus.
5. Treatment and prognosis. Read More

Authors:  Medina Perez Mariangeles , Gupta Saurabh , Badar Zain , Salastekar Ninad , Majmudar Anand

Keywords:  neck, masses, ultrasound

Laurindo Mariano De Oliviera Gabrielle,  García Gallegos Víctor,  Cobián Machuca Humberto

Final Pr. ID: Poster #: SCI-028

The presence of abnormal masses in the neck of children always represents a diagnostic challenge. Ultrasound can provide useful information about the origin of an inflammatory mass in the neck and is effective in differentiating solid from cystic lesions. The aim of this study was to evaluate the diagnostic performance of ultrasound in the characterization of abnormal neck masses of the pediatric population. Read More

Authors:  Laurindo Mariano De Oliviera Gabrielle , García Gallegos Víctor , Cobián Machuca Humberto

Keywords:  Neck Masses, Children, Ultrasound

Shadmani Ghazal,  Don Steven,  Tao Ting

Final Pr. ID: Poster #: EDU-041

Neck masses are commonly encountered in children. The evaluation of neck mass by ultrasound is the purpose of this educational exhibit. Read More

Authors:  Shadmani Ghazal , Don Steven , Tao Ting

Keywords:  Cervical masses, ultrasonography, pediatric patients