Indian Journal of Medical and Paediatric Oncology

IMAGES IN ONCOLOGY
Year
: 2020  |  Volume : 41  |  Issue : 4  |  Page : 565--566

A child with unusual liver lesions in a case of neuroblastoma


Abhijeet Taori1, Divya Malpani2,  
1 Department of Radiodiagnosis, Suyash Hospital, Indore, Madhya Pradesh, India
2 Department of Radiodiagnosis, Apollo Hospital, Indore, Madhya Pradesh, India

Correspondence Address:
Dr. Abhijeet Taori
Department of Radiodiagnosis, Suyash Hospital, Indore, Madhya Pradesh
India




How to cite this article:
Taori A, Malpani D. A child with unusual liver lesions in a case of neuroblastoma.Indian J Med Paediatr Oncol 2020;41:565-566


How to cite this URL:
Taori A, Malpani D. A child with unusual liver lesions in a case of neuroblastoma. Indian J Med Paediatr Oncol [serial online] 2020 [cited 2020 Dec 4 ];41:565-566
Available from: https://www.ijmpo.org/text.asp?2020/41/4/565/293823


Full Text

A 21-month-old female initially presented to us with a 2-week history of ataxia, loss of consciousness, bruises on the forehead, nystagmus, tremor, and mydriasis with morning irritability. The findings of magnetic resonance imaging (MRI) of the abdomen were consistent with a neuroblastoma [Figure 1]. At the time of diagnosis, the tumor was localized and showed no evidence of local or regional invasion, as defined by the image-defined risk factors.{Figure 1}

On surgery, the tumor was completely excised, with clear margins representing Stage 1 of the International Neuroblastoma Staging System. Histopathology was favorable with differentiating subtype and low Mitosis–Karyorrhexis index. Post surgery, MRI of the abdomen demonstrated no residual soft tissue. This was followed by intravenous immunoglobulin, prednisone, and cyclophosphamide according to standard regimen to treat the opsoclonus myoclonus ataxia syndrome. A stem cell collection was performed for autologous stem cell procedure.

At 3-month follow-up, no tumor recurrence was seen at the surgical bed. However, a single, small lesion with equivocal enhancement was discovered within the liver in segment 6/5, which was thought to be metastases versus hemangioma. Multiple follow-up MRI at 3-month interval showed gradually increasing number and size of lesions in the liver with avid enhancement but no specific washout characteristics. The biopsy of this liver lesion was attempted on two separate occasions, without a definitive diagnosis. The lesions stabilized 2 years postoperatively [Figure 2]. Still, as the possibility of metastases was thought to be highly likely, the tumor board decided to pursue open biopsy for diagnosis. The pathology on the peripheral wedge biopsy of liver surprisingly again showed no evidence of neoplasia [Figure 3]. What could be the cause of such an appearance?{Figure 2}{Figure 3}

 Answer



Neuroblastoma is a common neoplasm in the pediatric age group, usually presenting between 1 and 5 years of age. Metastases are frequent in bones and lymph nodes. Rarely, they may also be seen within the visceral organs and soft tissues.

Extramedullary hematopoiesis (EMH) is the formation of normal blood cells outside of the bone marrow, which is seen as a sequela of inadequate hematopoiesis.[1] The actual pathogenesis of EMH in patients with solid tumors remains unknown. Granulocyte colony-stimulating factor (G-CSF) is an important inducing growth factor which stimulates the bone marrow to increase the production and release of granulocytes into the blood.[2] G-CSF in turn may be an inducing factor of EMH. Our patient had received G-CSF as a stem cell rescue to ameliorate marrow suppression from chemotherapy.

A recent review described the presence of EMH in a spectrum of malignant solid tumors. They also describe liver as the most common visceral organ for EMH followed by kidney and paraspinal region.[2] However, to the best of our knowledge, the association of neuroblastoma and EMH in liver has not been reported in literature.

To conclude, in the setting of an existing malignancy, specifically neuroblastoma, EMH may pose as metastatic deposits signifying the progression of disease. In addition, childhood cancer survivors are at risk of developing pseudometastatic mass lesions, which are often multiple and develop years after completing chemotherapy. Due to prognostic implications, it is essential to confirm these lesions as they are nonaggressive with a benign course.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References

1Kim CH. Homeostatic and pathogenic extramedullary hematopoiesis. J Blood Med 2010;1:13-9.
2Bao Y, Liu Z, Guo M, Li B, Sun X, Wang L. Extramedullary hematopoiesis secondary to malignant solid tumors: A case report and literature review. Cancer Manag Res 2018;10:1461-70.