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Uniocular Trilateral Retinoblastoma with Spinal Metastases Geng-Yi Yong* and Humayun Akhter Faisal

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ISSN: 2378-346X Geng-Yi and Faisal. Int J Ophthalmol Clin Res 2017, 4:076 DOI: 10.23937/2378-346X/1410076 Volume 4 | Issue 3 International Journal of Open Access Ophthalmology and Clinical Research CASE REPORT Uniocular Trilateral Retinoblastoma with Spinal Metastases Geng-Yi Yong* and Humayun Akhter Faisal Department of Ophthalmology, Sibu Hospital, Sarawak, Malaysia *Corresponding author: Geng-Yi Yong, Department of Ophthalmology, Sibu Hospital, Sarawak, Malaysia, E-mail: [email protected] astatic disease due to poor disease awareness and late Abstract presentation [3]. This article reports a child with unio- We report a rare case of trilateral retinoblastoma with unio- cular retinoblastoma in association with suprasellar tu- cular involvement and spinal metastases. mour and spinal metastases. Trilateral retinoblastoma is a syndrome consisting of bilater- al (rarely unilateral) hereditary retinoblastoma in association Case Report with an intracranial neuroblastic tumour arising usually in the pineal region, infrequently at the suprasellar or parasellar This is a 3-year-old boy who presented with 2 days region. It can arise from either hereditary or sporadic forms history of headache, vomiting, lethargy and mild fever of retinoblastoma. This article reports a child with uniocular without neck rigidity. Retrospectively, the child’s moth- retinoblastoma in association with suprasellar tumour and spinal metastases. er did notice white reflex of the left eye 1 year before the presentation but she did not seek any medical ad- Keywords vice. There is no family history of retinoblastoma or Trilateral retinoblastoma, Uniocular, Suprasellar tumor, Me- other malignancy. On examination, there was left eye tastases leucocoria and strabismus. There was no hypopyon, red eye or enlargement of the globe. Relative afferent pu- Introduction pil defect of the left eye was positive. Intraocular pres- Retinoblastoma is the commonest primary ocular sure was normal bilaterally. Visual acuity could not be malignancy in children. Worldwide, the incidence is 1 assessed as the child was too ill. Fundus examination case of retinoblastoma per 14,000 to 20,000 live births revealed a roundish whitish yellow mass about 2 cm in with some variation between countries [1]. On the oth- size, obscuring the temporal part of the disc which ex- er hand, trilateral retinoblastoma is a rare condition. tended over the macular area with exudative retinal de- Among 141 cases of retinoblastoma seen in Hospital tachment further away from the macula. The nasal side Kuala Lumpur (the main referral centre for retinoblas- of the disc was also blurry. Some blood streaks were toma in Malaysia) between August 2001 and Decem- noted within the lesion and blood vessels over it. There ber 2009, there were only two children with trilateral was no other satellite focus detected. The right eye was disease (1.4%) [2]. It is a disease characterized by a bi- normal. lateral retinoblastoma (rarely unilateral) occurred in as- Computed Tomography (CT) scan showed a lobu- sociation with an intracranial neuroblastic lesion, which lated, hyperdensed intraocular fundus lesion in the usually arise in the pineal region. Less frequently, the left eye (Figure 1a) as well as a hyperdensed mass intracranial neuroblastic lesion may be detected at the with specks of coarse calcification in the suprasellar suprasellar or parasellar region as well [1]. intracranial mid line region (Figure 1b). Magnetic Res- Trilateral retinoblastoma has poor prognosis for both onance Imaging (MRI) showed left intraocular mass ocular and survival outcomes. The prognosis is worse in and retinal detachment without optic nerve or ret- developing countries where patients usually die of met- ro-orbital extension (Figure 2a). Brain and spine MRI Citation: Geng-Yi Y, Faisal HA (2017) Uniocular Trilateral Retinoblastoma with Spinal Metastases. Int J Ophthalmol Clin Res 4:076. doi.org/10.23937/2378-346X/1410076 Received: July 27, 2017: Accepted: August 30, 2017: Published: September 01, 2017 Copyright: © 2017 Geng-Yi Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Geng-Yi and Faisal. Int J Ophthalmol Clin Res 2017, 4:076 • Page 1 of 3 • DOI: 10.23937/2378-346X/1410076 ISSN: 2378-346X A B Figure 1: a) Orbit CT showing a lobulated, calcified, hyperdensed intraocular fundus lesion in the left eye; b) Brain CT shows a hyperdensed mass with specks of coarse calcifications in the suprasellar intracranial midline region. A B Figure 2: a,b) Trilateral Retinoblastoma. Axial and sagittal MRI showing a mass in the suprasellar region with involvement of the left eye. also showed a highly cellular, bi-lobed suprasellar The left eye enucleation was done under general tumor with calcification (Figure 2b) which was com- anesthesia and histological examination showed retino- plicated by moderate obstructive hydrocephalus, me- blastoma without optic nerve involvement. Histological tastases at sphenoid, distal spinal cord, cauda equina features included viable tumor cells and necrotic tumor and lumbosacral leptomeningeal regions. areas with calcification. There were also Flexner-Win- Biopsy of the distal spinal cord tumor showed necrot- tersteiner and Homer Wright rosettes. ic tumor tissue with foci of viable tumor clusters. The The child also had right extraventricular drainage cells have round to oval nuclei, inconspicuous nucleoli done to reduce the intracranial pressure. Subsequently and little cytoplasm. Immunohistochemistry showed re- the child was treated with a course of vincristine, carbo- activity patterns that are consistent with metastatic -ret platin, and etoposide (JOE regime). However, the child inoblastoma, viz.: positive neuron-specific enolase and died 2 months after the initial presentation due to pro- synaptophysin but negative glial fibrillary acidic protein. gressive neurological disease. Geng-Yi and Faisal. Int J Ophthalmol Clin Res 2017, 4:076 • Page 2 of 3 • DOI: 10.23937/2378-346X/1410076 ISSN: 2378-346X Discussion ma is characterized by undifferentiated small round cells without Flexner-Wintersteiner rosettes resembling neuro- Trilateral retinoblastoma is a rare condition, arising in blastoma [9]. The histologic findings of spinal tumor in this about 3% of all the patients with retinoblastoma [4]. It patient resembled metastatic retinoblastoma. manifests either as unilateral or bilateral intraocular retin- oblastoma associated with an intracranial Primitive Neuro- Although the suprasellar trilateral retinoblastoma is ectodermal Tumour (PNET) either in the pineal, suprasellar diagnosed earlier than those with pineal trilateral ret- or parasellar region. The association of intracranial neuro- inoblastoma, their prognosis remains poor and the pa- blastic lesion with unilateral intraocular retinoblastoma tients usually die of metastatic disease or postoperative is less common than bilateral intraocular retinoblastoma complications within 10 months from the diagnosis [10]. with the incidence of 0.5% and 5%-15% respectively [1]. According to several studies, the mean survival in pa- The intracranial lesions are considered to be independent tients with trilateral retinoblastoma varies from 1 to 28 primary retinoblastoma rather than metastatic spread as months after diagnosis of the intracranial lesion [8,11]. both retinal, and pineal or sellar tissue was originated from In our case, the diagnosis of trilateral retinoblastoma the same neural ectoderm [5]. remains a challenge because he presented with concur- Trilateral retinoblastoma can be diagnosed on the rent retinoblastoma with intracranial and spinal tumor. basis of eye examination, radiological imaging such as Trilateral retinoblastoma was diagnosed after the HPE Computed Tomography (CT) scans and MRI, and then of ocular tumor was confirmed as retinoblastoma and confirmed histologically. The diagnosis in our patient the biopsy of the distal spinal cord tumor are consistent was challenging because he presented with concurrent with presence of retinoblastoma cells. retinoblastoma with intracranial and spinal lesion. Thus, the intracranial lesion needs to be differentiated be- References tween the primary tumor and metastatic lesion. 1. American academy of ophthalmology (2016) Pediatric oph- thalmology and strabismus. Section 6. Basic and Clinical The diagnosis of trilateral retinoblastoma can be Science Course 2016-2017. made and confirmed by CT scan and/or MRI. Cranial or 2. Jamalia R, Sunder R, Alagaratnam J, Goh PP (2010) Ret- orbital CT scans are able to detect intraocular calcifica- inoblastoma registry report - Hospital kuala lumpur experi- tions and extent of the tumor [6]. MRI of the brain and ence. Med J Malaysia 66: 128-130. orbits is the most sensitive means of evaluating for ex- 3. Canturk S, Qaddoumi I, Khetan V, Ma Z, Furmanchuk A, traocular extension and it gives better delineation of the et al. (2010) Survival of retinoblastoma in less-developed optic nerve and also the pineal area [6]. Our patient was countries impact of socioeconomic and health-related indi- cators. Br J Ophtalmol 94: 1432-1436. diagnosed by CT and MRI, which is imperative to lower 4. Antoneli CB, Ribeiro Kde C, Sakamoto LH, Chojniak MM, the possibility of misdiagnosis. Novaes PE, et al. (2007) Trilateral retinoblastoma. Pediatr Intraocular retinoblastoma can extend to the brain Blood
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