This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Which statement(s) is/are true about neuroblastoma with respect to wilms tumor – 
Select and explain. 
A. Neuroblastoma causes displacement of kidney inferolaterally without distortion of collecting system, B. Aortic and IVC invasion by neuroblastoma, C. Neuroblastoma crossing mid line, D. All of these
D: All of these
Answer: D: All of these 
Explanation: Wilm's Tumor
Neuroblastoma


Age
Preschool
Preschool


Clinical features
Unilateral flank mass(asymptomatic abdominal mass),abdominal pain,hematuria, hypertension, fever, anorexia, vomiting
Abdominal mass,GI or genitourinary obstruction, proptosis, fever, bone pain, spinal cord compression, diarrhea, flushing, opsoclonus, myoclonus, headache


Calcification
Less commom (15%)
More than (85%) & punctate


Midline
Not crossed (confined to one side)
Crossed


Aortic / IVC invasion
Absent
Present


Spinal extension
Absent
Present


Distortion of calyces
Very common (90%)
Not seen


Hydronephrosis
More common (40%)
Less common(26%)


Hydronephrosis
No (always intrarenal)
Neuroblastoma may occur at extrarenal sites.


Retroperitoneal lymphadenopathy
Less common (13%)
More coomon(73%)


Retrocrural lymphadenopathy
No(0%)
Present(30%)


Liver metastasis
No(0%)
Present(18%)