Ophthalmological manifestations of neuroblastoma - A retrospective multicenter study.

Neuroblastoma (NBL) constitutes the most common extracranial solid tumor in children that arises from the sympathetic ganglia. Its manifestations depend on the localization of the tumor and metastases. This research aimed to assess the incidence of ophthalmological symptoms and their correlations with different prognostic factors. We collected and analyzed retrospectively the data of 776 children with a clinical diagnosis of peripheral neuroblastic tumors reported between 2004 and 2022 from 14 Polish pediatric oncology centers. Ophthalmological symptoms occurred in 17.10% of the patients, and in 12.70% they were diagnosed at the time of the first presentation. The reported manifestations comprised opsoclonus-myoclonus syndrome (OMS), Horner syndrome (HS), exophthalmos, periorbital hemorrhages, with the highest incidence of OMS (4.74% of all the patients). Moreover, we described the cases with neurological manifestations of NBL like paraparesis and facial nerve paresis. The age correlated with the form of symptoms, and HS was observed in the youngest patients. Similarly, the time from the symptoms onset to NBL diagnosis differed significantly among the patients, therefore the diagnosis of HS was associated with the longest period. In conclusion, the ophthalmological manifestations of NBL represent an essential group of symptoms. Therefore, clinicians should consider them as possible signs of tumors, particularly HS, which may be most challenging in the diagnostic process.