Search

Recent Articles

IJMPO—A Journey of a Thousand Miles

Author : Padmaj S. Kulkarni

Coronavirus Disease 2019 Treatment—T-Cells Hold the Key in Severe Cases

Author : Kunal Das, Nitika Agrawal, Mansi Kala, Rakhee Khanduri

Why Is China Importing COVID-19 Vaccine Now?

Author : Purvish M. Parikh

Protean Neuroophthalmic Presentations of Common Childhood Malignancies—A Report of Two Cases

CC BY 4.0 · Indian J Med Paediatr Oncol 2023; 44(03): 360-364

DOI: DOI: 10.1055/s-0043-1761610

Abstract

Common pediatric malignancies often surprise clinicians with unusual presentations. In this narrative, we report two patients with common childhood cancer having unique neuroophthalmic characteristics. In the first case, we have a child with a common childhood solid tumor presenting with blindness without proptosis, while the second case is of a child with a common hematological malignancy presenting with unilateral proptosis without visual impairment. The report highlights that common childhood cancers may present with neuroophthalmic symptoms on rare occasions, creating a diagnostic conundrum.

Declaration of Patient Consent

The authors certify that they have obtained consent from the parents for the publication of images and clinical information of the child in the journal. The parents understand that the child's name and initials will not be published and due efforts will be made to conceal the identity.

Publication History

Article published online:
12 May 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

Thieme Medical and Scientific Publishers Pvt. Ltd.
A-12, 2nd Floor, Sector 2, Noida-201301 UP, India

Abstract

Common pediatric malignancies often surprise clinicians with unusual presentations. In this narrative, we report two patients with common childhood cancer having unique neuroophthalmic characteristics. In the first case, we have a child with a common childhood solid tumor presenting with blindness without proptosis, while the second case is of a child with a common hematological malignancy presenting with unilateral proptosis without visual impairment. The report highlights that common childhood cancers may present with neuroophthalmic symptoms on rare occasions, creating a diagnostic conundrum.

neuroophthalmic symptoms Introduction

Childhood malignancies may present with nonspecific and overlapping clinical features, making it difficult to differentiate them from each other clinically. They often puzzle clinicians and pose interesting diagnostic challenges.[1] [2] [3] [4] [5] [6] [7] We describe two unique neuroophthalmological presentations of common childhood malignancies in this report.

Case 1

A 6-year-old boy presented with a 2-week history of headache and painless, progressive binocular vision loss. There was a preceding history of intermittent fever for 2 months, nocturnal bone pains, and recent-onset anemia, requiring a transfusion. He had severe bilateral visual impairment at presentation, with only the perception of light present. There was no obvious proptosis or raccoon eye. Fundoscopy revealed bilateral blurring of disk margins without optic atrophy. Severe pallor, generalized bony tenderness, and hepatomegaly were present on examination. Sutural diastasis was noted at sagittal and coronal sutures. The constellation of clinical presentation and the examination findings raised suspicion of acute leukemia or metastatic neuroblastoma.

Skull radiograph revealed remarkable sutural diastasis ([Fig. 1A]). A contrast-enhanced magnetic resonance imaging (CE-MRI) of the brain and orbit unveiled multiple intracranial, extradural collections over bilateral frontoparietal and occipital areas ([Fig. 1B]). Soft-tissue depositions over the orbital apices causing bilateral optic nerve compression were also evident, explaining the binocular blindness. A bone marrow (BM) aspiration and bilateral trephine demonstrated clusters of small, round, blue tumor cells ([Fig. 1C]), with immunohistochemistry indicating a positivity for neuron-specific enolase, CD 56, and CD 81 ([Fig. 1D]), confirming the presence of metastatic neuroblastoma in the BM. Computed tomography and a DOTATATE positron emission tomography scan were done for staging, showing a left suprarenal mass (size: 15 × 12 mm), with extensive metastasis to bones, BM, and cranial meninges over fronto–parieto–occipital regions. Treatment for high-risk neuroblastoma was initiated with the rapid COJEC protocol.[8] [9] There was an improvement in the systemic symptoms. However, the vision loss did not recover. A reassessment was performed after eight cycles of induction chemotherapy, demonstrating extensive BM disease. After a detailed discussion with the family, a decision to proceed with palliative care was taken.

Fig 1 :(A) Antero-posterior view of the skull radiograph showing remarkable sutural diastasis (white arrow), (B) axial section of T1-weighted MRI of the brain illustrating extradural soft tissue deposits along bilateral parieto-occipital regions (white dotted arrows), (C) bone marrow aspirate smear showing infiltration by blastoid atypical cells, and (D) immunohistochemistry demonstrating positivity for neuronspecific enolase


Case 2

A 3-year-old boy presented with proptosis involving the left eye for 1 month without pain, visual impairment, or systemic symptoms. Physical examination was unremarkable, except for nonaxial proptosis with esotropia and periocular fullness in the left eye ([Fig. 2A]). A CE-MRI of the brain and orbit was performed and demonstrated a homogeneously enhancing soft tissue mass involving the basisphenoid with extension into the left orbit ([Fig. 2B]). Dura-based, multifocal, nodular, enhancing soft-tissue deposits along the left frontoparietal convexity were also apparent. Clinicoradiological possibilities of metastatic neuroblastoma and parameningeal rhabdomyosarcoma were considered. Abdominal ultrasonography and chest radiograph were normal. The tumor was at a difficult site to access for a biopsy. While a complete blood count was normal at the baseline, a repeat evaluation after 7 days revealed evolving cytopenias with a hemoglobin of 95 g/L, total leukocyte count of 4.17 × 109 /L, differential leukocyte count of polymorphs: 23%, lymphocytes: 60%, monocytes: 16%, and a platelet count of 165 × 109 /L. Subsequent BM aspiration revealed findings consistent with acute leukemia ([Fig. 2C]). Flow cytometry confirmed the presence of T cell acute lymphoblastic leukemia (ALL). Cerebrospinal fluid was paucicellular (three cells/µL), and cytospin did not detect leukemic infiltration. However, the child was considered “central nervous system (CNS)-positive” due to the MRI findings suggestive of leptomeningeal carcinomatosis. Induction chemotherapy was initiated for high-risk T cell ALL as per the Indian Childhood Collaborative Leukaemia Group protocol.[10] The proptosis resolved 2 weeks into treatment. Reassessment by BM, MRI brain, and 18-fluorodeoxyglucose-positron emission tomography confirmed remission at the end of consolidation. The child will subsequently receive CNS radiotherapy as a part of the treatment protocol.

Figure 2:(A) Proptosis of the left eye, (B) sagittal section of T1-weighted CE-MRI of brain illustrating enhancing sheet of soft tissue at the basisphenoid with extension to the orbit (black arrow), (C) bone marrow aspirate smear showing blasts (May–Grunwald–Giemsa stain; 1,000x), (D) the blast cells were MPO negative (myeloperoxidase stain; 1,000x). CE-MRI, contrast-enhanced magnetic resonance imaging.


Discussion

Childhood cancers can have protean presentations. Extracranial malignancies may infiltrate the brain or the orbit and may be the initial manifestation of the disease.[11] [12] [13] [14] [15] [16] The unique presenting features of the cases in the current report are binocular painless visual loss in the absence of proptosis or raccoon's eye in a child with metastatic neuroblastoma, unilateral proptosis being the sole manifestation of T cell ALL in a young boy.

While malignancy was correctly suspected in both cases, the initial possibilities that were considered were different from the final diagnosis. Tissue diagnosis was rendered difficult due to the CNS location of the mass lesions, with BM aspiration and trephine clinching the diagnosis.

Orbital involvement is frequent in patients with metastatic neuroblastoma; raccoon's eye and proptosis are well-recognized manifestations. However, a presentation with visual loss without proptosis, as seen in case 2, is a rarity. [Table 1] summarizes the limited reports of orbital metastasis of neuroblastoma presenting with blindness without proptosis.[11] [12] [13] [17] [18] Treatment modalities to salvage vision have included steroids, decompressive surgery, and initiation of chemotherapy to treat the primary disease. The vision remained compromised in the majority of the reported cases, and the role of either steroids or surgery in salvaging the vision is not clear. Orbital metastasis of neuroblastoma confers a poor outcome, partially explained by a higher association with MYCN amplification.[19] [20] [21]

Table 1

Selected reports of patients with neuroblastoma presenting with blindness without proptosis

Proptosis due to orbital involvement by ALL is not considered a CNS-positive disease. A summary of selected reports of childhood ALL with proptosis is presented in [Table 2].[22] [23] [24] [25] [26] Notably, three of six cases, including the current one, had associated intracranial or optic nerve involvement, translating to CNS positivity. Proptosis may be the presenting manifestation of precursor B- or T-lineage ALL affecting infants, children, or adolescents. Orbital infiltration is more frequently unilateral, with bilateral involvement being quite uncommon. Visual impairment has been reported infrequently with proptosis. The oncological outcome of these patients does not differ from the patients who do not have orbital involvement.[22] [23] [24] [25] [26]

S No.

Author, year of publication, country

Number of patients

Age

Duration of blindness; visual acuity at diagnosis

Site of optic nerve compression by metastatic tumor

Treatment

Visual outcome; final acuity

Oncologic outcome

1.

Roy et al[17], 2021, India

1

3 y and 9 mo

2 wk; perception of light only

Optic canal; bilateral

High-dose dexamethasone, rapid COJEC chemotherapy

No improvement

On therapy

2.

Sivakumar et al [18], 2006, USA

1

4 y

2 wk; 20/200

Optic canal; bilateral

Not included

Not included

Not included

3.

McGirt et al[11], 2005, USA

1

33 mo

4 d; no perception of light

Optic foramen; bilateral

High-dose methylprednisolone, decompressive surgery

Partial improvement; finger counting, recognizing faces and printed book characters

Not included

4.

Lau et al[12], 2004, USA

1

2 y

Several days; no perception of light

Intracranial course; bilateral

High-dose steroid

Partial improvement; right eye-20/400 , left eye-hand movements

In clinical remission

5.

Varma et al[13], 2003, United Kingdom

1

2.5 y

3 wk; hand movement perceived

Orbital apices; bilateral

Pulse methylprednisolone

Right eye-partial improvement; 6/60, left eye-no improvement

Not included

6.

Current report

1

6 y

2 wk; no perception of light

Orbital apices; bilateral

Rapid COJEC chemotherapy

No improvement

Refractory disease

Table 2

Selected reports of childhood acute lymphoblastic leukemia presenting with proptosis

Conclusion

Common childhood malignancies may manifest with myriad neuroophthalmic manifestations, and a high index of suspicion is required to reach the correct diagnosis.

Conflict of Interest

None declared.

Declaration of Patient Consent

The authors certify that they have obtained consent from the parents for the publication of images and clinical information of the child in the journal. The parents understand that the child's name and initials will not be published and due efforts will be made to conceal the identity.

S No.

Author, year of publication, Country

Number of the patient(s)

Age

Ophthalmic features

Radiology

Oncologic diagnosis

Mode of diagnosis

Outcome

1.

Wang et al[22], 2020, China

1

4 y

Unilateral proptosis

Orbital extraconal mass

Hypodiploid B-cell ALL

Bone marrow study

Well on therapy

2.

Sathitsamitphong et al[23], 2019, Thailand

1

3 y

Unilateral proptosis

Orbital mass with intracranial extension

B-cell ALL

Bone marrow study

In remission; on therapy

3.

Sivaperumal et al[24], 2018, India

1

5 y

Bilateral proptosis

Not included

B-cell ALL

Bone marrow study

In remission; on therapy

4.

Ramamoorthy et al[25], 2016, India

1

4 y

Unilateral proptosis

Retrobulbar mass with intracranial extension

B-cell ALL

Biopsy from the orbital mass and bone marrow study

Well on therapy

5.

Thakker et al[26], 2006, India

1

8 mo

Right eye tearing, lid swelling, proptosis

Large, homogeneous orbital mass causing axial displacement of the globe and expansion of the orbit

B-cell ALL

Bone marrow study

Alive and well 14 mo posttreatment

6.

Current report

1

3 y

Unilateral proptosis

Mass over basisphenoid with extension into the left orbit

T-cell ALL

Bone marrow study

Doing well on therapy

References

  1.  Gökçe M, Aytaç S, Ünal Ş, Altan İ, Gümrük F, Çetin M. Acute megakaryoblastic leukemia with t(1;22) mimicking neuroblastoma in an infant. Turk J Haematol 2015; 32 (01) 64-67
  2.  Kawasaki Y, Makimoto M, Nomura K. et al. Neonatal acute megakaryoblastic leukemia mimicking congenital neuroblastoma. Clin Case Rep 2015; 3 (03) 145-149
  3.  Wang YM, Mo JQ, Kuo DJ, Wong V. MLL rearranged acute lymphoblastic leukaemia presenting as a maxillary sinus mass with a discordant immunophenotypic profile from the bone marrow. BMJ Case Rep 2019; 12 (02) e227400
  4.  Ünal Ş, Kuşkonmaz B, Balcı YI. et al. An unusual presentation of pediatric acute lymphoblastic leukemia with parotid gland involvement and dactylitis. Turk J Haematol 2010; 27 (02) 117-119
  5.  Sadawaite S, Jijina F, Nair CK, Seth S, Ghosh K. An unusual presentation of pediatric acute lymphoblastic leukemia. Indian J Hematol Blood Transfus 2008; 24 (02) 59-62
  6.  Gallagher BL, Vibhakar R, Kao S, Cooper CS. Bilateral testicular masses: an unusual presentation of neuroblastoma. Urology 2006; 68 (03) 672.e15-672.e17
  7.  Mittal D, Mandelia A, Bajpai M, Agarwala S. Adrenal neuroblastoma with metastatic mandibular mass: an unusual presentation. J Cancer Res Ther 2015; 11 (03) 645
  8.  Ladenstein R, Pötschger U, Valteau-Couanet D. et al. Interleukin 2 with anti-GD2 antibody ch14.18/CHO (dinutuximab beta) in patients with high-risk neuroblastoma (HR-NBL1/SIOPEN): a multicentre, randomised, phase 3 trial. Lancet Oncol 2018; 19 (12) 1617-1629
  9.  Jain R, Hans R, Totadri S. et al. Autologous stem cell transplant for high-risk neuroblastoma: achieving cure with low-cost adaptations. Pediatr Blood Cancer 2020; 67 (06) e28273
  10.  Das N, Banavali S, Bakhshi S. et al. Protocol for ICiCLe-ALL-14 (InPOG-ALL-15-01): a prospective, risk stratified, randomised, multicentre, open label, controlled therapeutic trial for newly diagnosed childhood acute lymphoblastic leukaemia in India. Trials 2022; 23 (01) 102
  11.  McGirt MJ, Cowan Jr JA, Gala V, Garton HJ, Muraszko KM, Thompson BG. Surgical reversal of prolonged blindness from a metastatic neuroblastoma. Childs Nerv Syst 2005; 21 (07) 583-586
  12.  Lau JJC, Trobe JD, Ruiz RE. et al. Metastatic neuroblastoma presenting with binocular blindness from intracranial compression of the optic nerves. J Neuroophthalmol 2004; 24 (02) 119-124
  13.  Varma D, George N, Livingston J, Negi A, Willshaw HE. Acute visual loss as an early manifestation of metastatic neuroblastoma. Eye (Lond) 2003; 17 (02) 250-252
  14.  Belgaumi AF, Kauffman WM, Jenkins JJ. et al. Blindness in children with neuroblastoma. Cancer 1997; 80 (10) 1997-2004
  15.  Taylor CW, Taylor RE, Kinsey SE. Leukemic infiltration of the orbit: report of three cases and literature review. Pediatr Hematol Oncol 2005; 22 (05) 415-422
  16.  Bidar M, Wilson MW, Laquis SJ. et al. Clinical and imaging characteristics of orbital leukemic tumors. Ophthal Plast Reconstr Surg 2007; 23 (02) 87-93
  17.  Roy PS, Chhabra P, Jain R, Gupta P, Sodhi KS, Bansal D. Metastatic, bilateral adrenal neuroblastoma presenting with blindness without proptosis. J Pediatr Hematol Oncol 2021; 43 (08) e1250-e1252
  18.  Sivakumar S, Poulik J, Sivaswamy L. Monocular blindness as presentation manifestation of neuroblastoma. Neurohospitalist 2016; 6 (01) 41
  19.  Smith SJ, Diehl NN, Smith BD, Mohney BG. Incidence, ocular manifestations, and survival in children with neuroblastoma: a population-based study. Am J Ophthalmol 2010; 149 (04) 677-682.e2
  20.  Harreld JH, Bratton EM, Federico SM. et al. Orbital metastasis is associated with decreased survival in stage M neuroblastoma. Pediatr Blood Cancer 2016; 63 (04) 627-633
  21.  DuBois SG, Kalika Y, Lukens JN. et al. Metastatic sites in stage IV and IVS neuroblastoma correlate with age, tumor biology, and survival. J Pediatr Hematol Oncol 1999; 21 (03) 181-189
  22.  Wang L, Ashraf DC, Kinde B, Ohgami RS, Kumar J, Kersten RC. Hypodiploid B-lymphoblastic leukemia presenting as an isolated orbital mass prior to systemic involvement: a case report and review of the literature. Diagnostics (Basel) 2020; 11 (01) 25
  23.  Sathitsamitphong L, Natesirinilkul R, Choeyprasert W, Charoenkwan P. Unusual presentation with orbital mass in a child with precursor B-cell acute lymphoblastic leukemia. Case Rep Hematol 2019; 2019: 8264689
  24.  Sivaperumal PR, Latha SM, Narayani S, Scott J. Bilateral proptosis in a child: a rare presentation of acute lymphoblastic leukemia. J Ophthalmic Vis Res 2018; 13 (04) 511-513
  25.  Ramamoorthy J, Jain R, Trehan A, Saxena AK, Ahluwalia J. Orbital mass in a child with acute lymphoblastic leukemia: a case report and review of the literature. J Pediatr Hematol Oncol 2016; 38 (08) 646-648
  26.  Thakker MM, Rubin PAD, Chang E. Pre-B-cell acute lymphoblastic leukemia presenting as an orbital mass in an 8-month-old. Ophthalmology 2006; 113 (02) 343-346
  27. Address for correspondence

    Richa Jain, DM
    Pediatric Hematology-Oncology Unit, Department of Pediatrics, Advanced Pediatrics Centre, Postgraduate Institute of Medical Education and Research
    Chandigarh 160012
    India   

    Publication History

    Article published online:
    12 May 2023

    © 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

    Thieme Medical and Scientific Publishers Pvt. Ltd.
    A-12, 2nd Floor, Sector 2, Noida-201301 UP, India

Fig 1 :(A) Antero-posterior view of the skull radiograph showing remarkable sutural diastasis (white arrow), (B) axial section of T1-weighted MRI of the brain illustrating extradural soft tissue deposits along bilateral parieto-occipital regions (white dotted arrows), (C) bone marrow aspirate smear showing infiltration by blastoid atypical cells, and (D) immunohistochemistry demonstrating positivity for neuronspecific enolase

Figure 2:(A) Proptosis of the left eye, (B) sagittal section of T1-weighted CE-MRI of brain illustrating enhancing sheet of soft tissue at the basisphenoid with extension to the orbit (black arrow), (C) bone marrow aspirate smear showing blasts (May–Grunwald–Giemsa stain; 1,000x), (D) the blast cells were MPO negative (myeloperoxidase stain; 1,000x). CE-MRI, contrast-enhanced magnetic resonance imaging.

References

  1.  Gökçe M, Aytaç S, Ünal Ş, Altan İ, Gümrük F, Çetin M. Acute megakaryoblastic leukemia with t(1;22) mimicking neuroblastoma in an infant. Turk J Haematol 2015; 32 (01) 64-67
  2.  Kawasaki Y, Makimoto M, Nomura K. et al. Neonatal acute megakaryoblastic leukemia mimicking congenital neuroblastoma. Clin Case Rep 2015; 3 (03) 145-149
  3.  Wang YM, Mo JQ, Kuo DJ, Wong V. MLL rearranged acute lymphoblastic leukaemia presenting as a maxillary sinus mass with a discordant immunophenotypic profile from the bone marrow. BMJ Case Rep 2019; 12 (02) e227400
  4.  Ünal Ş, Kuşkonmaz B, Balcı YI. et al. An unusual presentation of pediatric acute lymphoblastic leukemia with parotid gland involvement and dactylitis. Turk J Haematol 2010; 27 (02) 117-119
  5.  Sadawaite S, Jijina F, Nair CK, Seth S, Ghosh K. An unusual presentation of pediatric acute lymphoblastic leukemia. Indian J Hematol Blood Transfus 2008; 24 (02) 59-62
  6.  Gallagher BL, Vibhakar R, Kao S, Cooper CS. Bilateral testicular masses: an unusual presentation of neuroblastoma. Urology 2006; 68 (03) 672.e15-672.e17
  7.  Mittal D, Mandelia A, Bajpai M, Agarwala S. Adrenal neuroblastoma with metastatic mandibular mass: an unusual presentation. J Cancer Res Ther 2015; 11 (03) 645
  8.  Ladenstein R, Pötschger U, Valteau-Couanet D. et al. Interleukin 2 with anti-GD2 antibody ch14.18/CHO (dinutuximab beta) in patients with high-risk neuroblastoma (HR-NBL1/SIOPEN): a multicentre, randomised, phase 3 trial. Lancet Oncol 2018; 19 (12) 1617-1629
  9.  Jain R, Hans R, Totadri S. et al. Autologous stem cell transplant for high-risk neuroblastoma: achieving cure with low-cost adaptations. Pediatr Blood Cancer 2020; 67 (06) e28273
  10.  Das N, Banavali S, Bakhshi S. et al. Protocol for ICiCLe-ALL-14 (InPOG-ALL-15-01): a prospective, risk stratified, randomised, multicentre, open label, controlled therapeutic trial for newly diagnosed childhood acute lymphoblastic leukaemia in India. Trials 2022; 23 (01) 102
  11.  McGirt MJ, Cowan Jr JA, Gala V, Garton HJ, Muraszko KM, Thompson BG. Surgical reversal of prolonged blindness from a metastatic neuroblastoma. Childs Nerv Syst 2005; 21 (07) 583-586
  12.  Lau JJC, Trobe JD, Ruiz RE. et al. Metastatic neuroblastoma presenting with binocular blindness from intracranial compression of the optic nerves. J Neuroophthalmol 2004; 24 (02) 119-124
  13.  Varma D, George N, Livingston J, Negi A, Willshaw HE. Acute visual loss as an early manifestation of metastatic neuroblastoma. Eye (Lond) 2003; 17 (02) 250-252
  14.  Belgaumi AF, Kauffman WM, Jenkins JJ. et al. Blindness in children with neuroblastoma. Cancer 1997; 80 (10) 1997-2004
  15.  Taylor CW, Taylor RE, Kinsey SE. Leukemic infiltration of the orbit: report of three cases and literature review. Pediatr Hematol Oncol 2005; 22 (05) 415-422
  16.  Bidar M, Wilson MW, Laquis SJ. et al. Clinical and imaging characteristics of orbital leukemic tumors. Ophthal Plast Reconstr Surg 2007; 23 (02) 87-93
  17.  Roy PS, Chhabra P, Jain R, Gupta P, Sodhi KS, Bansal D. Metastatic, bilateral adrenal neuroblastoma presenting with blindness without proptosis. J Pediatr Hematol Oncol 2021; 43 (08) e1250-e1252
  18.  Sivakumar S, Poulik J, Sivaswamy L. Monocular blindness as presentation manifestation of neuroblastoma. Neurohospitalist 2016; 6 (01) 41
  19.  Smith SJ, Diehl NN, Smith BD, Mohney BG. Incidence, ocular manifestations, and survival in children with neuroblastoma: a population-based study. Am J Ophthalmol 2010; 149 (04) 677-682.e2
  20.  Harreld JH, Bratton EM, Federico SM. et al. Orbital metastasis is associated with decreased survival in stage M neuroblastoma. Pediatr Blood Cancer 2016; 63 (04) 627-633
  21.  DuBois SG, Kalika Y, Lukens JN. et al. Metastatic sites in stage IV and IVS neuroblastoma correlate with age, tumor biology, and survival. J Pediatr Hematol Oncol 1999; 21 (03) 181-189
  22.  Wang L, Ashraf DC, Kinde B, Ohgami RS, Kumar J, Kersten RC. Hypodiploid B-lymphoblastic leukemia presenting as an isolated orbital mass prior to systemic involvement: a case report and review of the literature. Diagnostics (Basel) 2020; 11 (01) 25
  23.  Sathitsamitphong L, Natesirinilkul R, Choeyprasert W, Charoenkwan P. Unusual presentation with orbital mass in a child with precursor B-cell acute lymphoblastic leukemia. Case Rep Hematol 2019; 2019: 8264689
  24.  Sivaperumal PR, Latha SM, Narayani S, Scott J. Bilateral proptosis in a child: a rare presentation of acute lymphoblastic leukemia. J Ophthalmic Vis Res 2018; 13 (04) 511-513
  25.  Ramamoorthy J, Jain R, Trehan A, Saxena AK, Ahluwalia J. Orbital mass in a child with acute lymphoblastic leukemia: a case report and review of the literature. J Pediatr Hematol Oncol 2016; 38 (08) 646-648
  26.  Thakker MM, Rubin PAD, Chang E. Pre-B-cell acute lymphoblastic leukemia presenting as an orbital mass in an 8-month-old. Ophthalmology 2006; 113 (02) 343-346