Juvenile recurrent parotitis: Diagnostic and therapeutic effectiveness of sialography. Retrospective study on 110 children.

Introduction: Juvenile recurrent parotitis (JRP) is characterized by recurrent episodes of painful parotid swelling, generally associated with non-obstructive sialectasia of the parotid gland. The aim of this study was to evaluate the diagnostic and therapeutic effectiveness of sialography in children affected by JRP.

Methods: Clinical records of 110 outpatients with a diagnosis of JRP followed up from 2008 to 2017 at the Unit of Paediatric Otorhinolaryngology, Surgery Department of the Bambino Gesù Children's Hospital of Rome, were retrospectively reviewed. Data on demographics, number of acute episodes/year, course of disease, site of symptoms and duration of follow up were collected. The inclusion criteria were: at least two or more episodes of intermittent swelling of the parotid glands on one side or both sides during the last 6 months, age <16 years. Exclusion criteria were: obstructive lesions, dental malocclusion, Sjogren syndrome, congenital IgA immunodeficiency, and relevant systemic diseases. Outcome of the procedure was measured by evaluating number and degree of episodes of parotid swelling before and after sialography.

Results: Sialography has been shown in all cases to be a valid method in the diagnosis of JRP. Following the execution of the sialography, in 98 patients (89% of cases) there was a statistically significant improvement of disease with a mean reduction of 67.4% of episodes of parotid swelling (p < 0.05). In 75 patients there was marked improvement of the symptomatology (p < 0.05). In 23 patients partial resolution occurred (p < 0.05); in 12 patients there was no resolution or a reduction less than 30% of episodes (p > 0.05). There was a statistically significant relationship between the number of attacks/year and the degree of glandular function, pre and post-sialography in 2-way ANOVA test (p < 0.05).

Conclusion: Sialography is effective method not only as a diagnostic procedure but also as a therapeutic procedure in treatment of JRP. It is a method that can be carried out in ambulatory setting, without anaesthesia, with a minimum cost and with a very low rate of complications. In a disease with tendency to spontaneous resolution like JRP, sialography represent a therapeutic option alternative to more invasive treatment.