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E2306. All About Pediatric Oncological PET-CT: A Pictorial Review
Authors
  1. Mamta Gupta; Allegheny Helth Network
  2. Charanjeet Singh; Allegheny Helth Network
Background
The addition of PET/CT has a great impact in clinical practice, especially oncology. Clinical impact of PET and PET/CT has been calculated in different patient series and varies from 30 to 50%. Use of PE/CT for the pediatric oncologic imaging is slower than in adults as its acquisition is based on ionizing radiation.

Educational Goals / Teaching Points
To discuss usefulness and spectrum of the PET-CT imaging in Pediatric patients, with special emphasis on the more common malignancies; describe image acquisition protocol in pediatric age group, radiation concern; and illustrate organ wise spectrum of physiological distribution patterns, intensities, variations in normal/physiological as well as pathological FDG uptake.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Use of PET/CT in pediatric age (case-based images) include lymphoma (HD, NHL), sarcoma, neuroblastoma, germ cell tumor, Wilms tumor, hepatoblastoma and primary of unknown origin. Imaging protocol and FDG dosing for each of the following cases: the findings will be described and the pearls/differential diagnoses will be made. Physiologic uptake (case-based images): brain, spleen, liver and urinary collecting system (including bladder). Gastrointestinal tract Bone marrow Physiologic Uptake Variants (case-based images): salivary glands, waldeyer ring vocal cords, thymus breast myocardium brown fat skeletal muscles.

Conclusion
This presentation will expose you to many of these PET-CT appearances through quiz-based (cases) and matching questions. By completing the presentation, you will be able to recognize various types of normal/physiological and abnormal FDG uptake. It is very important to correctly recognize these patterns to avoid panic and unnecessary imaging, especially in pediatric age group.