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Featured researches published by Nenad Arsovic.


International Journal of Oral and Maxillofacial Surgery | 2010

Parapharyngeal space tumors: 61 case reviews.

M.V. Dimitrijevic; Snezana Jesic; A.A. Mikic; Nenad Arsovic; Nada Tomanovic

Parapharyngeal tumors account for 0.5% of head and neck tumors. They are difficult to diagnose because they have few symptoms and are surgically inaccessible. This retrospective study included 61 patients with parapharyngeal space tumors, treated in the last 20 years. The data, obtained from the medical records, included symptoms and clinical signs, diagnostic procedures, surgical approach, postoperative complications and histopathological findings. The most common symptoms were dysphagia, foreign body sensation, pain, and symptom-free patients. For precise tumor localization and its relation to adjacent structures, computerized tomography, magnetic resonance imaging and contrast angiography were used. All the patients were treated surgically. The commonest surgical approach was transcervical, followed by transoral and combined transcervical-transoral. Histopathological examination verified that the origin of these tumors was most frequently salivary or neurogenic.


Otology & Neurotology | 2014

Why do treatment failure and recurrences of benign paroxysmal positional vertigo occur

Snezana Babac; Dragoslava Djeric; Mirjana Petrović-Lazić; Nenad Arsovic; Aleksandar Mikic

Objective To investigate the potential risk factors associated to the treatment failure and recurrence of benign paroxysmal positional vertigo (BPPV). Study Design Prospective cohort study. Setting Tertiary referral center. Patients Four hundred patients with benign paroxysmal positional vertigo, 119 men and 281 women, aged 27 to 88 years. Intervention Patients were treated once a week, with only one, appropriate, depending on the affected canal, repositioning maneuver (modified Epley, Semont, barbecue/inverted Gufoni, Kim). The control Dix-Hallpike test and the roll test were performed on 7 days. Main Outcome Measures The treatment outcome and recurrence were evaluated with regard to sex, age, duration of symptoms, etiologic factors, migraines, osteoporosis, vascular risk factors, endocrine diseases, localization of otoconia, and simultaneous involvement of multiple canals. Results The results indicate that treatment was negatively affected by patients’ age, osteoporosis, and head trauma, without them causing recurrent symptoms. The highest number of uncured patients was observed in the 73- to 88-year-old age group (14.8%). The application of more than one maneuver was necessary in 27.5% of cases with primary BPPV and 88.9% with secondary BPPV. The highest treatment success was achieved in the group with BPPV of the posterior semicircular canal (F = 3.668, p = 0.026). The recurrence rate was 15.5%. Conclusion Potential risk factors associated to the treatment failure were as follows: the age older than 50, secondary BPPV, head trauma, the occurrence of osteoporosis, and localization of otoconia in the anterior semicircular canal. The analyzed factors did not have impact on the recurrence.


Otology & Neurotology | 2013

Randomized prospective trial of hyperbaric oxygen therapy and intratympanic steroid injection as salvage treatment of sudden sensorineural hearing loss.

Ljiljana Cvorovic; Milan B. Jovanovic; Zoran Milutinovic; Nenad Arsovic; Dragoslava Djeric

Objective To compare the effects of hyperbaric oxygen (HBO) and intratympanic (IT) steroid injection on hearing after the failure of primary treatment in patients with idiopathic sudden sensorineural hearing loss (ISSHL). Study Design A prospective randomized trial. Setting Tertiary referral center. Patients Fifty patients with failure of primary therapy for ISSHL. Intervention(s) After primary treatment with systemic steroids and failure of therapy, defined as less than 10-dB hearing gain, 50 patients were enrolled in the study and received either hyperbaric oxygen or intratympanic steroid treatment. The patients were not matched and not similar. Main Outcome Measure(s) Hearing gain at 0.25, 0.5, 1, 2, and 4 kHz after treatment. Results There were significant differences between hearing thresholds at all frequencies before and after the HBO treatment. Similarly, there were significant differences between hearing thresholds at most frequencies (except 2 kHz) before and after the treatment in the IT group. The subgroups of patients with pure tone average less than 81 dB and were younger than 60 years had better response to HBO treatment than those with profound deafness and in the elderly. Conclusion HBO and IT steroid therapy could be successfully used as salvage therapies in patients with sudden deafness. Further study is needed to demonstrate superiority of one of the treatments.


Otology & Neurotology | 2006

Conductive Hearing Loss in Patients with Active Acromegaly

Borivoj Babic; Milan Petakov; Vojko Djukic; Sanja Ognjanovic; Nenad Arsovic; Tatjana Isailovic; Jovica Milovanovic; Djuro Macut; Svetozar Damjanovic

Objective: There have been rare conflicting results reported concerning possible higher frequency of hearing loss in acromegalic patients. Our goal was to determine whether there is higher frequency of conductive hearing loss in acromegalics and what may cause it if there is any. Study Design: Prospective study. Setting: Tertiary referral center. Patients: Thirty previously untreated patients with acromegaly were compared with 20 age- and sex-matched healthy control subjects. Interventions: In all subjects: Otomicroscopy, tuning fork tests, audiometry tympanometry, cochleostapedial reflex, otoacoustic emissions. In acromegalics: endocrinologic assessment, MRI and if necessary, epipharyngoscopy. Main Outcome Measures: We searched for: 1) Signs of ossicle fixation: absence of stapedial reflex in the presence of normal tympanogram, conductive hearing loss, and absence of or grossly disturbed OAE; 2) Disturbances of middle ear ventilation: excessive negative pressure (tympanogram type C), or middle ear effusion (tympanogram type B). Results: The only statistically significant difference between untreated acromegalics and healthy subjects was the presence of middle ear ventilation problem: 7/30 acromegalics (23%) in comparison to none out of 20 healthy controls (0%), p = 0.033. The acromegalics with middle ear ventilation problem were significantly older, had longer duration of the disease, and lower mean growth hormone (GH) levels in comparison with acromegalics without this problem (51.6 ± 1.7 vs. 44.4 ± 2.5 years, 11.6 ± 2.4 vs. 7.7 ± 0.4 years, 21.68 ± 4.89 vs. 49.98 ± 12.54 &mgr;g/L respectively). Conclusion: Patients with active acromegaly have more frequent middle ear ventilation problem than normal population, especially those with longer duration of the disease. Possible causes are discussed.


European Archives of Oto-rhino-laryngology | 1997

Altered immunoregulations in otosclerosis: presence of autoantibodies in otosclerotic sera samples.

Snezana Jesic; R. Radulović; Nenad Arsovic

A current concept of the etiopathogenesis of otosclerosis is an immune response. The purpose of this study was to determine if autoantibodies were present in sera samples from patients with known otosclerosis. Organ non-specific total antinuclear antibodies (tANA) were determined in 98 sera samples by the immunofluorescent method in 47.9% of otosclerotic patients versus 5% in controls. The most frequent specific antinuclear antibody was antibody to native deoxyribonucleinic acid and antibody to ribonucleoprotein. Tissue-specific antibodies to native-collagen type II molecule (ACA II) were determined by counter-immunoelectrophoresis in the same sera samples and were detected in 54% versus none in healthy sera. There was no correlation between the presence of these two autoantibodies. In patients with tANA present, a statistically significant depletion of cochlear function was noted. The presence of ACA II showed no connection with hearing loss. The present study showed some alteration in immunoregulatory markers in otosclerotic patients and the possibility that ANA may play a role in the pathogenesis of otosclerosis-induced perceptive deafness.


Clinical Otolaryngology | 2016

Prospective case–control study of efficacy of bilateral selective neck dissection in primary surgical treatment of supraglottic laryngeal cancers with clinically negative cervical findings (N0)

Vladimir Djordjevic; B. Bukurov; Nenad Arsovic; M. Dimitrijevic; Snežana Ješić; V. Nesic; Z. Petrovic

To evaluate the efficacy of bilateral selective neck dissection of levels II–IV in elective and therapeutic management of the neck as a part of primary surgical treatment of patients with supraglottic laryngeal cancer and clinically negative cervical findings (N0).


Health and Quality of Life Outcomes | 2017

Psychometric characteristics of the chronic Otitis media questionnaire 12 (COMQ – 12): stability of factor structure and replicability shown by the Serbian version

Bojana Bukurov; Nenad Arsovic; Sandra Sipetic Grujicic; Mark Haggard; Helen Spencer; Jelena Eric Marinkovic

BackgroundRecently, demand for and supply of short-form patient-reported outcome measures (PROMs) have risen throughout the world of healthcare. Our contribution to meeting that demand has been translating and culturally adapting the Chronic Otitis Media Questionnaire-12 (COMQ-12) for adults into Serbian and enhancing its psychometric base on the relatively large Serbian COM caseload. Chronic otitis media can seriously affect quality of life progressively and in long-term, and it remains the major source of hearing problems in the developing world.MethodsThe translated questionnaire was given twice to 60 adult patients with chronic otitis media of three types (inactive, active mucosal and active squamous disease) and to 60 healthy volunteers. Both patients and volunteers also filled the generic Short-Form 36 questionnaire (SF-36). Conventional statistical procedures were used in strategically driven development of scoring. Additionally, item responses were scaled by linear mapping against the provisional total score. Generalizability, detailed factor interpretation and supportability of scores were criteria, for the best compromise factor solution.ResultsTest-retest reliability was very high (0.924 to 0.989, depending on score). The a priori content dimensions of the questionnaire were strongly supported by 3-factor exploratory and confirmatory factor analyses for content validity, separating (i) ear symptoms from (ii) hearing problems, from (iii) daily activity restriction plus healthcare uptake. The 3-factor structure was furthermore highly stable on replication. The very large effect sizes when contrasting patients with healthy volunteers, and active with inactive disease established construct validity for the total score. A strong association with disease activity and a moderate one with generic health-related quality of life (HRQoL), the SF-36, supported construct validity for two of three factors extracted (ear symptoms, and impact on daily activities plus healthcare uptake).ConclusionsGiven the minimal psychometric work to date on COMQ-12, this interim sample with 120 data points adds materially to knowledge of its reliability, several forms of validity and the feasibility of profile sub-scores to supplement total scores. The good psychometric properties shown for COMQ-12 justify both its routine clinical use and acquisition of the necessarily larger sample for generality, score optimisation and the evaluation of responsiveness.


International Congress Series | 2003

Etiopathogenetic aspects of recurrent cholesteatoma development

Nenad Arsovic; Dragoslava Djeric; Zeljko Petrovic; Vladimir Djordjevic; Sanja Krejovic-Trivic; Vojko Djukic

Abstract The causes of cholesteatoma development have been interpreted in different ways. The object of our study was to present the most frequent causes of recurring cholesteatomas on the basis of our investigations. The prospective study carried out at the Institute for Otorhinolaryngology and Maxillofacial Surgery included 120 patients treated surgically for cholesteatomas. Seventy-five patients were cured after the first operation, while 45 were reoperated after recurrent cholesteatoma. The modified student t test was used to establish the difference between statistically significant groups (small independent sample proportion). The cholesteatoma was often localized in attic (25.3%) and was spreading into antrum (28%). Another group of cholesteatoma was more frequently present in mesotympanum. The small marginal perforations in back quadrants were noted more frequently in the second group (26.7%). Likewise, 40% of the patients from this group had intact chain of auditory ossicles. Destruction of all three auditory ossicles was more often in the first group. Polypoid mucosa was less detected in the first group (18.7%) in relation to the second group (46.7%). Canal wall-up tympanoplasty was used more commonly in the second group of patients. In patients treated surgically for cholesteatoma, the recurrence of the condition may be caused by different factors such as development of cholesteatoma in posterior parts of cavum, polypoid mucosa, localization of cholesteatoma in meso- and retrotympanum and obscured cavity recesses, intact chain of auditory ossicles and the application of close tympanoplasty.


Military Medical and Pharmaceutical Journal of Serbia | 2017

Large hibernoma of the neck: Case report

A. Mikic; Miljan Folic; Ivan Boricic; Nenad Arsovic

Introduction. A hibernoma is a rare benign tumor derived from vestigial remnants of brown adipose tissue. In neonates this tissue makes up about 5% of the body mass and its amount greatly decreases after birth, persisting only in scattered subcutaneous areas. In rare cases, brown fat continues to grow leading to a hibernoma that may be located in the head and neck. We present an illustrative case of a large hibernoma of the neck with infraclavicular extension and discuss about diagnostic and treatment difficulties. Case report. A 29-year-old male presented with large, slowly progressive, painless neck mass that was noticed 6 months earlier. Computed tomography (CT) and magnetic resonance (MR) showed a well-vascularized, soft tissue tumor of the lateral region of the neck and supraclavicular fossa with extension below clavicle. Treatment included arterial embolization followed by challenging surgical removal of the tumor. Dissection was performed at III, IV and V levels of the neck, making complete resection possible without the tumor fragmentation or major blood vessels and cranial nerves injuries. The final diagnosis of the hibernoma was made by histopathological analysis. The patient had no signs of recurrence during three-year follow-up. Conclusion. Although the CT scan and MR may raise the suspicion, hibernoma is definitely diagnosed by a pathologist. It is very important to exclude the malignant processes, foremost liposarcoma. The tumor fragmentation during surgery should be avoided because the high vascularity of the tumor tissue carries a substantial risk for hemorrhage. Our experience with preoperative embolization and complete tumor resection in this case showed positive impact on the final outcome.


Otology & Neurotology | 2013

Otitis media and facial paralysis as presenting symptoms of a primary middle ear sarcoidosis.

Nenad Arsovic; Borivoj Babic; Milovan Dimitrijevic; Bojana Bukurov; Violeta Vucinic

Sarcoidosis is a multiorgan, multisystem chronic granulomatous disorder of unknown cause. It primarily affects young or middle-aged predominately female patients, with prominent clinical involvement of the lungs and lymph nodes. Distinctive inflammatory lesions show histologic presence of noncaseating epithelioid and Langerhans type giant-cell granulomas and can be found in almost any organ of the body. In most cases, initial symptoms of sarcoidosis are respiratoryVpersistent dry cough (in approximately 30% of diagnosed cases), followed by eye or skin manifestations, enlargement of peripheral lymph nodes, fatigue, weight loss, fever, and erythema nodosum (1Y3). Otolaryngologic sarcoid manifestations are quite rare and may occur in 10% to 15% of diagnosed patients (4). Palpable cervical lymphadenopathy is identified as a prevalent finding in sarcoidosis of the head and neck region, with skin lesions being the second most common indicator (4). Within the ear, sensorineural hearing loss of varying severity and tinnitus have also been reported.

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