1. Osteochondromas from different neuroblastoma patients in | Figure 1

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  1. Osteochondromas from different neuroblastoma patients in the A) proximal ulna and B) proximal humerus. 2. Rates of death and OC in neuroblastoma patients. All who developed OCs received chemotherapy, immunotherapy, differentiation therapy, and radiotherapy. Could the OCs be a result of the radiotherapy?

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Coronal (image 1) and axial (image 2) contrast enhanced CT obtained in a child with neuroblastoma shows a large left neuroblastoma (arrowhead). The tumor crosses midline, partially encases the aorta, and extends into the inferior vena cava (arrow). There is also diffuse involvement of the pancreas (dashed arrow). Vascular invasion in patients with neuroblastoma is incredibly uncommon. More typically, neuroblastoma uplifts, displaces, and encases vessels. #TummyTuesday #AbdomenTuesday

Longitudinal color Doppler US of the same patient 3 weeks later shows decrease in size of the avascular suprarenal mass (white arrow). Continued follow-up showed further decrease with gradual calcification, typical of a neonatal adrenal hemorrhage. Other suprarenal masses in a newborn include neuroblastoma & extralobar pulmonary sequestration. Internal vascularity would favor neuroblastoma, as would interval growth on short-term follow-up imaging (which is generally a reasonable approach as many small congenital neuroblastomas will undergo spontaneous regression). #FridayQuizDay

Hepatomegaly secondary to neuroblastoma in an infant](https://app.figure1.com/case-detail/4da1cb85-9429-4f4f-8d8e-95aba4242767)

< 2 Y/O Female with #Neuroblastoma](https://app.figure1.com/case-detail/76c88c26-005d-4914-b007-73ae75b43adc)

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