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Central nervous system tumours and children cochlear implant candidacy
Clavería M.A. , Coll N. , Haag O. , Rebollo M. , Cruz O. , Candela S. , Morales A. , Rodriguez Jorge J.
Sant Joan de Déu University Hospital, Otorinolaringology, Esplugues-Barcelona, Spain, 2Sant Joan de Déu University Hospital, Medical
Imaging, Esplugues-Barcelona, Spain, 3Sant Joan de Déu University Hospital, Oncology, Esplugues-Barcelona, Spain, 4Sant Joan de Déu
University Hospital, Neurosurgery, Esplugues-Barcelona, Spain
Aim: Neuroradiological CT Scan and MRI allow the detection of different asymptomatic Central Nervous System
(CNS) tumours in children before cochlear implantation. This information gives to CI team the chance to perform
an appropriate cochlear implantation and a safe follow up.
Methods: During the course of 2012-2013 CI programs Sant Joan de Déu University Hospital, three
asymptomatic CNS tumours were detected during CI candidacy evaluation: bilateral intracranial arachnoid cyst,
hypothalamic tumor and a classic medulloblastoma. Interdisciplinary CI committee indicates the proper time to
realize CI surgery and it’s monitoring depending on present or future needs of each clinical case.
Results: Medulloblastoma in remission phase after surgical and oncological treatment and bilateral intracranial
arachnoid cyst cases were treated with cochlear implant. Both of them were implanted with a device that allows
removal of the magnet during surgery in order to perform periodic MRI follow up as indicated by neuroncologist
and neurosurgeon respectively. The evolution of them is satisfactory. Hypothalamic tumor case is pendent of
three months more clinical and radiological evolution for decision of implantation. If this happens CI device must
be with the same condition as the cases described above.
Conclusion: Since the implementation of the newborn hearing screening (2010) in Catalonia (Spain) pediatric
implantation is performed at an early age. The possible association of clinically asymptomatic neurological
tumours in these children requires a comprehensive neuro-radiological study complementary. With this action
protocol is possible to early detect other pathologies associated and select the appropriate CI device which must
not be incompatible with its future needs.