Benign parotid gland tumours treated at the Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital of Split from 2013 to 2017

Cilj istraživanja: Svrha ove studije je analizirati epidemiološke i kliničke značajke benignih tumora parotide u petogodišnjem iskustvu Klinike za uho, nos i grlo s kirurgijom glave i vrata KBC-a Split. Ispitanici i metode: Od ukupno 135 pacijenata hospitaliziranih na Klinici u razdoblju od 1. siječnja 2013. do 31. prosinca 2017., kriterijima uključivanja i isključivanja odabrano je 120 pacijenata. Uvidom u bolničku dokumentaciju izdvojeni su sljedeći parametri: dob, spol, strana na kojoj je tumor, histološki tip i odabrana operativna tehnika. Rezultati: Medijan dobi pacijenata je 60 godina. Prema raspodjeli podataka o dobi, vidljivo je da starije populacije obolijevaju od benignih tumora parotide. Jednak je broj pacijenata oba spola s tim da 75% pacijenata s pleomorfnim adenomom čine žene, a jednak udio muškaraca boluje od tumora Warthin. Porast broja tumora je prisutan kod oba spola. Nema razlike u lateralizaciji tumora. Sveukupno je operirano devet različitih patohistoloških tipova tumora. Najbrojniji je tumor Warthin (46,67%), potom slijede pleomorfni adenom (38,33%), bazeocelularni adenom (4,2%), ciste (3,3%) te mioepiteliom (2,5%). Najčešće korištena tehnika je superficijalna parotidektomija s očuvanjem ličnog živca iako ni ekstirpacija nije rijetka (64 odnosno 55 od 120 slučajeva). Totalna parotidektomija primjenjena je samo jedanput (0,83%). Zaključak: Pacijenti s benignim tumorom parotide su uglavnom starije životne dobi te ne postoji razlika među muškarcima i ženama. Najčešći histopatološki tip je tumor Warthin. Najprimjenjivanija operacija je superficijalna parotidektomija. U promatranom petogodišnjem razdoblju postoji porast incidencije u populaciji. Smatramo da su potrebna daljna istraživanja za bolje razumijevanje benignih tumora parotide na razini države.Objectives: To analyze epidemiologic and clinical characteristics of patients with benign parotid gland tumours in five year experience at the Department of Otothinolaryngology and Head and Neck Surgery University Hospital of Split. Material and Methods: Out of 135 hospitalized parotid gland tumour patients from January 1st 2013. to December 31st 2017., we chose 120 patients based on inclusion and exclusion criteria. With the insight of the hospital documentation, we analysed four parameters: age, sex, lateralization, pathohistological diagnosis and operation type. Results: Mean age was 60 years. Distribution of age data is showing that most of the patients belong to older population. There is no difference between males and females. 75% patients with pleomorphic adenoma are women and 75% patients with Warthin's tumour are men. An increase in number of tumors is present in both sexes. There is no significant lateralization. In all, there were nine different histological types. The most common is Warthin's tumour (46.67%), followed by pleomorphic adenoma (38.33%), bazeocellular adenoma (4.2%), cystis (3.3%) and myoepithelioma (2.5%). The most commonly used technique is superficial parotidectomy with facial nerve preservation although extirpation is frequent as well (64 and 55 out of 120 cases, respectively). Total parotidectomy was performed only once (0,83%). Conclusions: Patients with benign tumours are usually older people and there is no predominance between men and women. The most common histological type is Warthin's tumour. The most performed operation is superficial parotidectomy. There is an increase of incidence in the observed five-year period. We consider further studies are needed for a better understanding of benign parotid gland tumours in Croatia.Parotid Neoplasm