Neuroblastoma

  • Etiology: tumor of neuroblastic origin occurring along sympathetic chain – neck (5%), thoracic (15%), abdominal (60%) – adrenal (50%) + sympathetic chain, pelvic (5%) in organ of Zuckerkandel + presacral
  • Imaging: solid mass, often grow beyond adrenal, displacing kidney, crossing midline and encasing abdominal vasculature, extends into neural foramina
  • CT: 80% calcified
  • DDX: neuroblastoma, ganglioneuroblastoma, ganglioneuroma – differ in malignancy potential with neuroblastoma being the most malignant and ganglioneuroma being essentially benign
  • Complications: metastases to bone (50% at diagnosis) / lymph nodes / lung / liver, spinal canal invasion
  • Clinical: urine should be checked for elevated catecholemines (HVA and VMA), 80% before 4 years old, 5% after 10 years old, opsoclonus / myoclonus, associated with Beckwith-Wiedemann syndrome / Neurofibromatosis type 1 / Hirschsprung disease / DiGeorge syndrome

Radiology Cases of Neuroblastoma

Radiology Cases of Thoracic Neuroblastoma

CXR and CT of ganglioneuroma
CXR shows a smooth mass in the left superior/posterior mediastinum. Axial CT with contrast of the chest shows a non-calcified solid paraspinal mass.
CXR and MRI of neuroblastoma
CXR PA and lateral shows a large left posterior mediastinal mass. Coronal and sagittal T1 MRI without contrast (lower left and middle) and coronal T1 MRI with contrast (lower right) of the chest shows an enhancing mass arising from the left adrenal gland extending up into the left thorax.
CXR and CT of neuroblastoma
CXR shows a posterior mediastinal mass to the left of the spine that is clearly calcified on the coronal and axial CT with contrast of the chest.
CXR of post radiation scoliosis
CXR AP (left) taken as an infant shows a round left-sided soft tissue mass that was in the posterior mediastinum and found to be neuroblastoma that was subsequently treated in part with radiation therapy. CXR AP (right) taken 17 years later shows a curvature of the upper thoracic spine convex to the right.

Radiology Cases of Adrenal Neuroblastoma

MRI of neuroblastoma invading the spinal canal
Coronal T1 MRI without contrast of the chest shows a right paraspinal mass in the region of the right adrenal gland that on axial sequences was seen to extend into the spinal canal.
MRI of neuroblastoma
Sagittal T2 MRI shows a huge left adrenal mass that was noted to cross midline and encase the abdominal vasculature.
CT of neuroblastoma
Axial CT with contrast of the abdomen shows a large midline calcified mass that crosses the midline and encases abdominal vessels.
CT of neuroblastoma with orbital metastasis
Axial CT without contrast of the abdomen (above) shows a large mass that has faint calcifications within it that fills the entire left upper quadrant of the abdomen. Axial CT without (lower left) and with (lower right) contrast of the orbit shows a round soft tissue mass around the right pterygoid plate that enhances strongly with contrast.
CXR of post radiation scoliosis
CXR AP shows a mild curvature of the thoracolumbar spine convex to the left. Several calcifications are seen projecting over the liver.

Radiology Cases of Presacral Neuroblastoma

BE of presacral neuroblastoma
Lateral image from a barium enema performed after an intravenous pyelogram (below) shows anterior displacement and compression of the bladder (to the left of the image) and rectum (in the middle of the image) by a presacral mass. The scout image (above) showed the mass was not calcified.

Radiology Cases of Neuroblastoma Bone Metastases

Radiograph of neuroblastoma bone metastases to the femur
AP radiograph of the femurs shows a mottled appearance to both femurs with multiple lytic lesions noted in the femurs with associated periosteal reaction, more prominent on the left than the right.
Radiograph of bone metastases from neuroblastoma
AP radiographs of the humerus (above) and radius and ulna (below) show lesions involving the proximal humeral diaphysis, entire radial diaphysis and proximal ulna diaphysis all of which are lytic in appearance and having a wide zone of transition and associated faint periosteal reaction.

Surgery Cases of Neuroblastoma

Gross pathological image of neuroblastoma
Gross pathological image with the aorta in the midline cut open shows a large mass arising from the right adrenal gland, which displaces the right kidney inferiorly and which crosses the midline and encases the aorta.