Staging and Restaging Pediatric Abdominal and Pelvic Tumors
A practical radiology review of Staging and Restaging Pediatric Abdominal and Pelvic Tumors, focused on imaging findings, differential diagnosis, reporting points, and...
RadPhrases Editorial Team2 min read
A practical radiology review of Staging and Restaging Pediatric Abdominal and Pelvic Tumors, focused on imaging findings, differential diagnosis, reporting points, and high-yield teaching pearls.
Neuroblastoma
- Most common extracranial solid tumor in kids
- Calcifications = key clue (80–90% on CT)
- Crosses midline, encases vessels (NOT invades)
- Intraspinal extension → think neuroblastoma (Wilms NEVER does)
- Image-Defined Risk Factors= everything → ≥1 IDRF = L2 disease
- MIBG imaging mandatory (FDG PET only if MIBG-negative)
- Diffuse liver mets → easy to MISS on US/CT → MRI + DWI saves you
- Stage MS: <18 months + skin/liver/BM mets → better prognosis
Easy-to-forget pitfall
- Below L2 vertebral level, intraspinal extension is NOT an IDRF
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