Case Author(s): J. Wallis, M.D. , 2/23/95 . Rating: #D3, #Q4

Diagnosis: Metastatic Neuroblastoma

Brief history:

4 year old boy with bone pain.

Images:

Anterior and posterior whole body images

View main image(mb) in a separate image viewer

View second image(bs). Whole body bone scintigraphy (pelvis views are from 24 hour images)

Full history/Diagnosis is available below


Diagnosis: Metastatic Neuroblastoma

Full history:

Patient who presented with anemia and bone pain. At the time of the study, final pathology of a bone marrow biopsy was suspicious for neuroblastoma, but final stains were pending.

Findings:

Diffuse bone marrow uptake of MIBG suggests widespread involvement of bone marrow by neuroblastoma. Normal MIBG activity should be confined to the heart, salivary glands, liver, spleen, and bladder, with some excretion into the GI tract.

Bone scintigraphy demonstrated more localized abnormalities, particularly in the proximal humeri and tibea.

Discussion:

I-131 MIBG is an imaging agent which is useful for the diagnosis and staging of neuroblastoma and pheochromocytoma.

Other tumors, such as carcinoid and medullary thyroid carcinoma may be visualized, but with relatively low sensitivity; octreotide imaging is likely superior for these tumors.

Followup:

Bone marrow biopsy confirmed neuroblastoma.

ACR Codes and Keywords:

References and General Discussion of MIBG Scintigraphy (Anatomic field:Skeletal System, Category:Neoplasm, Neoplastic-like condition)

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Case number: mb002

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