2015 Annual Meeting

SC37-Diagnostic Issues in Pediatric Brain Tumors

2015 Annual Meeting

Room CC 207, March 27 2015, 8:00am to 11:30am

Adekunle M. Adesina, Christine Fuller

Educational Objective

LAST PRESENTATION

The complexity of many pediatric brain tumors, frequently exhibiting differing histologic features from those seen in adult tumors, can be bewildering and intimidating even to the trained neuropathologist. Even pediatric brain tumors that share similar histologic features to those of adults, often have different biologic potential than their adult counterparts. This course will provide both a broad general overview of common and not-so-common pediatric brain tumors, as well as cover important differential diagnostic considerations and appropriate diagnostic work-up in each diagnostic category. The specific topics and subtopics are as follows: 1) The small blue cell tumor dilemma: Medulloblastoma / PNET vs. Atypical Teratoid-Rhabdoid Tumor and Malignant Gliomas, 2) Ependymal tumors and their mimics: Ependymoma vs. PNET (Ependymoblastoma / Medulloepithelioma) vs. Choroid Plexus Carcinoma, 3) Pleomorphic cells do not a glioblastoma make: Glioblastoma vs. Pleomorphic Xanthoastrocytoma, 4) Pediatric spindle cell tumors include more than just meningioma: Desmoplastic Ganglioglioma vs. Meningioma, 5) Beware the great mimicker: Pilocytic Astrocytoma vs. a myriad of other gliomas including Glioblastoma, and 6) Glioneuronal potpourri: Dysembryoplastic Neuroepithelial Tumor vs. Ganglioglioma vs. Pilocytic Astrocytoma The target audience includes (i) general surgical pathologists who encounter pediatric brain tumors in daily practice, (ii) pediatric surgical pathologists, and (iii) trainees including residents and specialty fellows in pediatric, surgical, and neuropathology. Pre-meeting illustrative cases and a syllabus will be available for review on the USCAP website prior to the course. Registrants will also have access to after meeting materials on the USCAP website. Upon completion of this educational activity, participants should be able to:

  1. Develop appropriate age-related and site-specific differential diagnoses for pediatric brain tumors;
  2. Recognize the plethora of histologic variations seen in low grade glial tumors such as the pilocytic astrocytoma and their potential mimicry of high grade tumors such as the glioblastoma;
  3. Review the differential diagnoses of common groups of pediatric brain tumors and the salient distinguishing histologic features of embryonal tumors and their variants, glial tumors, and glio-neuronal tumors, etc.; and
  4. Recognize the histologic features of developmental tumors such as dysembryoplastic neuroepithelial tumors and their phenotypic overlap with conventional tumors, as well as their presentation in the context of epilepsy related disorders.

Session Credits: CME = 3 / SAMs = N/A

Agenda

8:00am
SC Speaker
Speaker: Adekunle Adesina, MD, PhD, Texas Children's Hospital, Baylor College of Medicine, Houston, TX
Access to Handouts
10:00am
SC Speaker
Speaker: Christine Fuller, MD, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA
Access to Handouts

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