Cervical Tracheal Resection and Anastomosis for Postintubation Tracheal Stenosis.

In this study the authors evaluated the outcomes of tracheal resection and anastomosis in postintubation tracheal stenosis. The authors also aimed to identify clinical and radiological factors associated with restenosis. Thirty-four consecutive patients were included in the study. Patients with subglottic stenosis who underwent procedures involving cricoid cartilage and patients with other etiologies were excluded from the study. Univariate analysis was performed to determine the risk factors for restenosis. Receiver operating characteristic (ROC) curves were generated for the diameter of the narrowest part of the trachea (Dst) and the distance between cricoid cartilage and stenosis (Dcs). Of the 34 patients, 31 (91.1%) patients were successfully decannulated. Nineteen (55.8%) patients had complications. After univariate analysis, Dst (P = 0.001), Dcs (P = 0.001), smoking (P = 0.007) and grade of the stenosis (P = 0.003) were significantly associated with restenosis. The sensitivity and specificity were 90.9% and 77.3%, respectively, when the cutoff value for Dst was 4 mm. Sensitivity and specificity were 72.7% and 100%, respectively, when the cutoff value for Dcs was 10 mm. Tracheal resection and anastomosis is an effective surgical method for treating postintubation tracheal stenosis. In our series, 91.1% of the patients with postintubation tracheal stenosis were successfully decannulated. Restenosis was the most common complication. The diameter of the narrowest part of the trachea (Dst), the distance between cricoid cartilage and stenosis (Dcs), smoking and grade of stenosis were significantly associated with restenosis.

Surgical considerations and safety of cochlear implantation in otitis media with effusion.

OBJECTIVE: To evaluate the effects of otitis media with effusion on surgical parameters, patient safety, perioperative and postoperative complications. METHODS: Total 890 children who underwent cochlear implantation between 2006 and 2015 were included. The ages ranged from 12 months to 63 months (mean: 32 months). The patients were divided into two groups according to the presence or absence of otitis media with effusion; otitis media with effusion group and non-otitis media group. RESULTS: Of 890 children, 105 had otitis media with effusion prior to surgery. In non-otitis media with group, there were 785 children. The average duration of surgery was 60min (ranged from 28 to 75min) in non-otitis media group, and 90min (ranged from 50 to 135min) in otitis media with effusion group (p<0.05). Granulation tissue and edematous middle ear and mastoid mucosa were observed in all cases of otitis media with effusion during the surgery. There was no significant difference between the complications of groups with or without otitis media with effusion (p>0.05). In 5 of 105 patients, there was a ventilation tube inserted before cochlear implantation, which did not change the outcome of implantation. CONCLUSION: There is no need for surgical treatment for otitis media with effusion before implantation since otitis media with effusion does not increase the risks associated with cochlear implantation. Operation duration is longer in the presence of otitis media with effusion. However, otitis media with effusion leads to intraoperative difficulties like longer operation duration, bleeding, visualization of the round window membrane, cleansing the middle ear granulations as well as mastoid and petrous air cells.

Treatment of Congenital Choanal Atresia via Transnasal Endoscopic Method.

OBJECTIVES: Congenital choanal atresia (CCA) is a very rare abnormality of the nose, but in the case of bilateral presence, it becomes a life-threatening malformation. Various surgical treatment options, such as transpalatal, transseptal, and open rhinoplasty techniques, as well as the transnasal approach, have been defined for the repair of CCA. In this study, the authors intended to evaluate the outcomes of transnasal endoscopic surgery for CCA, and stent implementation's impact on surgical success. METHODS: Patients who were admitted to the Otorhinolaryngology Department of Gaziantep University and patients who had not undergone CCA surgery before were included in the study. Patients who underwent transnasal endoscopic choanal atresia surgery (TECAS) were advised to have regular nasal endoscopic examinations performed at check-ups; after a 6-month follow-up period, surgical results were evaluated concerning whether stenosis had occurred or not. RESULTS: Of the 48 patients who underwent TECAS after a minimum 6-month follow-up period, 34 of patients revealed no stenosis, so the overall surgical success rate was 70.8%. Fourteen (29.2%) patients who underwent TECAS developed stenosis and required revision surgery. CONCLUSIONS: Transnasal endoscopic choanal atresia surgery is the most preferred approach for CCA repair and has many advantages, such as excellent vision, shorter operative time, minimal bleeding, and minimum complication. Despite advances in endovision systems and surgical instruments, stenosis is the most challenging problem after TECAS, so new treatment strategies should be developed to prevent stenosis.

Oxidative stress in otosclerosis.

OBJECTIVES: Otosclerosis is a disease involving abnormal bone turnover in the human otic capsule that results in hearing loss. Several hypotheses have been suggested for the etiopathogenesis of otosclerosis; however, its etiology remains unclear. METHODS: This study evaluated the correlation between otosclerosis and levels of paraoxonase-1 (PON1), arylesterase, total antioxidant status, total oxidant status (TOS), oxidative stress index (OSI), total sulfhydryl (-SH) groups, lipid hydroperoxide, and ceruloplasmin in the serum of otosclerosis patients and healthy subjects with respect to oxidative stress. RESULTS: In our study, TOS and OSI levels were higher in the otosclerosis patients than in the controls. The PON1 levels showed that oxidative stress was severe, and as a result, antioxidants were consumed and depleted. DISCUSSION: When an imbalance between oxygen free radical production and antioxidative defense mechanisms occurs, reactive oxygen species levels may increase, which in turn may damage cells and tissues through the peroxidation of phospholipid membrane structures. The body initially responds with increased antioxidant production, but if the oxidative stress is severe, decreased antioxidant levels may result. This study reports expression levels of oxidative stress species in otosclerosis patients.

Association between Tumor Size and Bilateral Involvement in Papillary Thyroid Carcinoma.

Background. Tumor multifocality and bilaterality of papillary thyroid carcinoma (PTC) are important factors when selecting the most appropriate surgical procedure. The aim of this study was to assess the bilaterality rate in PTC and the relationship between the tumor size and bilaterality. Materials and Methods. Thyroidectomy specimens with a diagnosis of PTC were retrospectively reviewed in the Pathology Department of a tertiary care medical center. Specimens were divided into three groups according to the size of the primary and contralateral tumor foci. Tumors less than or equal to 1 cm in each lobe were included in group 1. Group 2 consisted of tumors greater than 1 cm in one lobe and less than 1 cm in the other lobe. Tumors greater than 1 cm in each lobe were included in group 3. Results. We identified 868 total thyroidectomy specimens with a diagnosis of PTC between 2001 and 2011. Of these cases, both thyroid lobes were involved in 262 cases (32%). There were 109 (42%), 121 (46%), and 32 cases (12%) in group 1, group 2, and group 3, respectively. Conclusion. Bilaterality is frequent in PTC and is not related to tumor size. Accordingly, the high frequency of bilateral disease in PTC should be kept in mind when determining the extent of the surgical procedure.

Predictive factors for malignancy in patients with persistent cervical lymphadenopathy.

The aim of this study was to identify clinical factors that can predict malignancy in patients with persistent cervical lymphadenopathy. This retrospective study included 575 patients with persistent cervical lymphadenopathy who underwent surgical excision. The patients were divided into two groups according to their ages: group 1 (≤18 years) and group 2 (>18 years). Multiple logistic regression models and univariate analysis were performed to determine the association between clinical factors and malignancy. Male gender [odds ratio (OR) 4.184, 95 % confidence interval (CI) 1.823-9.602, p = 0.001], increased age (OR 1.072, 95 % CI 1.001-1.148, p = 0.046), left-sided lesions (OR 3.423, 95 % CI 1.407-8.329, p = 0.007), and larger lymph node size (OR 1.445, 95 % CI 1.021-2.044, p = 0.038) were significantly associated with malignancy in group 1. Male gender (OR 3.761, 95 % CI 2.361-5.992, p = 0.001), increased age (OR 1.015, 95 % CI 1.003-1.027, p = 0.018), duration of the disease (OR 0.770, 95 % CI 0.668-0.888, p = 0.001), and the presence of B symptoms (OR 4.996, 95 % CI 2.862-8.721, p = 0.001) were significantly associated with malignancy in group 2. The sensitivity and specificity of the models were 84 and 61.5 % for group 1 and 77.9 and 67.9 % for group 2, respectively. Increasing age and male gender were found to be associated with malignancy in all age groups. Larger lymph node size and left-sided lymphadenopathy were significant predictors of malignancy in children. Presence of B symptoms was found to be associated with malignancy in adults. Our results indicated that increasing duration of lymphadenopathy and the presence of bilaterality render the lymph node more likely to be benign in adults. No significant association was found between the involved neck site and malignancy for all age groups.

Auditory brainstem implant in postlingual postmeningitic patients.

OBJECTIVES/HYPOTHESIS: The aim of this study was to evaluate outcomes of postlingual postmeningitic patients who received an auditory brainstem implant (ABI). STUDY DESIGN: Retrospective analysis was performed on postlingual postmeningitic patients with bilateral profound sensorineural hearing loss who underwent ABI between the years 2007 and 2014 METHODS: All patients were postlingually deaf due to cochlear ossification as a consequence of bacterial meningitis. The patients received a MED-EL or Neurelec ABI. All patients were operated on at different hospitals by the same primary surgeon. The patients were tested using Ling 5 sound detection, sound field implant thresholds between 250 Hz and 6 kHz, and 6 to 12 choice closed-set word and sentence tests. RESULTS: Nine patients with postmeningitic cochlear ossification received an ABI. Five of nine ABI users (55.5%) wear their audio processors (AP) most of the time. Four (44.5%) with no perceivable benefit have become nonusers. Three of the five consistent ABI users reported good benefit. The other two ABI users who do wear their APs do not respond to sound in daily living but reported benefits such as "feeling sound" in a good way. CONCLUSIONS: In this study, five of nine patients (55.5%) with bilateral ossified cochlea had some degree of benefit from their ABI. An ABI may be useful in hearing restoration in postlingual patients with bilateral ossified cochlea due to meningitis. However, poor results may be related to side effects, which may necessitate deactivation of electrodes, long duration of auditory deprivation, or impairments in the auditory neural structures as a result of meningitis. LEVEL OF EVIDENCE: 4. Laryngoscope, 126:1889-1892, 2016.

Isolated sphenoid sinus disease: An overlooked cause of headache.

OBJECTIVES: The aim of this study was to evaluate patients who underwent endoscopic sphenoid sinus surgery for isolated sphenoid sinus disease. We also investigated the impact of sphenoid sinus surgery on headache intensity. MATERIAL AND METHODS: Twenty-one consecutive patients who underwent endoscopic sphenoidotomy for isolated sphenoid sinus disease were included in the study. Diagnosis of isolated sphenoid sinus pathology was based on history, physical examination, and radiologic evaluation. All patients had headache with various localizations. Pre- and postoperative headache intensity of patients was scored using a visual analogue scale (VAS). RESULTS: The most common location of headache was the vertex (24%). The preoperative and postoperative mean VAS scores for headache were 8.24 ± 0.94 and 2.67 ± 1.49, respectively. Statistical comparison revealed a significant improvement in headache intensity (p < 0.01). Polyps (33.3%) were the most common pathology, followed by inflammation (23.8%). CONCLUSIONS: The most common presenting symptom of isolated sphenoid sinus disease is headache. In this study, we demonstrated that headache induced by isolated sphenoid disease can be relieved by endoscopic sphenoidotomy. Sphenoid sinus disease should be considered in the differential diagnosis of patients presenting with subacute or chronic headache.

Cochlear Implantation in Extraordinary Cases.

BACKGROUND: Although cochlear implantation has been almost a standard otological procedure worldwide, it may still create a dilemma for the surgeon in some unusual instances such as Seckel syndrome, aural atresia and posterior fossa arachnoid cyst. CASE REPORT: Three extraordinary cases of cochlear implantation were reported. The first case was a case of Seckel syndrome with a cardiac pacemaker due to complete atrioventricular block. The second case had posterior fossa arachnoid cyst that had retrosigmoid cyst removal and cochlear implantation simultaneously. The last case had cochlear implantation in the ear with congenital aural atresia. All cases could be implanted successfully with full electrode insertion and good audiological outcome. Delayed facial paralysis that occurred in the patient with arachnoid cyst resolved spontaneously. CONCLUSION: This study addressed the efficiency of cochlear implantation in cases of Seckel syndrome, complete atrioventricular block managed with cardiac pacemaker, congenital aural atresia and posterior fossa arachnoid cyst. In addition, the retrosigmoid approach and cochlear implantation can be performed simultaneously.

Effectiveness and Safety of Selective Neck Dissection in Lymph Node-Positive Squamous Cell Carcinoma of the Head and Neck.

The aim of this study was to investigate the effectiveness and safety of selective neck dissection in patients with lymph node-positive head and neck squamous cell carcinoma to determine regional control and survival rates. Eighty patients with lymph node-positive head and neck squamous cell carcinoma who underwent selective dissection were included in the study. Regional control, survival rates, and factors affecting survival were analyzed. Regional control was 90%, disease-specific survival was 93.4%, and the overall survival rate was 87.25%. T stage, N stage, age, and extracapsular spread were included in hazard regression models. None of the factors were statistically significant. Selective neck dissection is an effective and oncologically safe treatment option in selected cases. T stage, N stage, and extracapsular spread had no significant impact on disease-specific survival.

Incidence and predictors of malignancy in children with persistent cervical lymphadenopathy.

OBJECTIVE: The aim of this study was to analyze the clinical and histopathologic aspects of persistent cervical lymphadenopathies in children. METHODS: This retrospective study included 98 children who underwent surgical excision for persistently swollen cervical lymph nodes between 2001 and 2013. Lymph nodes greater than 1.5 cm that persisted for more than 4 weeks and were unresponsive to an initial antibiotic treatment were considered "persistent". The largest lymph node with an abnormal ultrasonographic appearance was selected for surgical biopsy. The patients were divided into 2 groups according to the histopathologic outcome: benign or malignant. RESULTS: No significant differences were found between the groups regarding the mean size and mean duration of the swollen cervical lymph nodes (p = 0.147 and p = 0.446, respectively). The area under the ROC curve was 0.567 (95% confidence interval = 0.463-0.667, p = 0.259) for lymph node size and 0.507 (95% confidence interval = 0.404-0.609, p = 0.909) for the duration of the cervical lymphadenopathy. There was no significant difference in the presence of B symptoms between the two groups (p = 0.519). No significant difference was found between benign and malignant groups regarding bilaterality (p=0.913). CONCLUSIONS: The findings of our study demonstrated that the size and duration of cervical lymphadenopathy, bilateral or unilateral involvement and the presence or absence of B symptoms are not indicators of malignancy. We found a high incidence of malignancy in pediatric cervical lymphadenopathy cases in contrast to other current studies.

Management of upper aerodigestive tract amyloidosis.

OBJECTIVES: The aim of this study was to discuss the treatment options for upper aerodigestive tract amyloidosis. METHODS: Four patients with histologically confirmed amyloidosis were included in the study. All patients underwent surgical treatment. Three patients had laryngeal amyloidosis, and 1 patient had tonsillar amyloidosis. RESULTS: Two of the cases of laryngeal amyloidosis were successfully treated with a combination of surgery and radiation therapy. One case of laryngeal amyloidosis was treated with surgery alone. The tonsillar amyloidosis was removed by tonsillectomy. None of the cases showed systemic involvement. Long-term follow-up of the patients showed no recurrence or evidence of systemic disease. CONCLUSIONS: Surgical resection is the primary treatment for patients with upper aerodigestive tract amyloidosis. Radiation therapy is especially effective in cases of recurrent amyloidosis with submucosal involvement. Pedunculated polypoid lesions may be treated with surgery alone, and in cases of recurrence, irradiation following the surgical removal should be considered. Tonsillectomy is usually sufficient for treating tonsillar amyloidosis.

Parotid gland involvement as a presenting feature of Wegener's granulomatosis.

Salivary gland involvement is a rare presenting clinical feature of Wegener's granulomatosis (WG). Early recognition and identification of any unusual presentations of WG may enable the early commencement of appropriate treatment. We report a case in which the initial manifestation of the disease was parotid gland swelling, and discuss the management of the patient. WG should be considered in the differential diagnosis when salivary gland enlargement occurs with other otolaryngological symptoms.

Expression of cyclooxygenase-2, 12-lipoxygenase, and inducible nitric oxide synthase in head and neck squamous cell carcinoma.

AIM: The objective of this study was to investigate whether cyclooxygenase-2 (COX-2), 12-lipoxygenase (12-LOX), and inducible nitric oxide synthase (iNOS) have a role in carcinogenesis of head and neck squamous cell carcinoma (HNSCC). MATERIALS AND METHODS: Twenty-two patients with HNSCC were included in the study. Cancer tissues and adjacent normal mucosa were obtained from each patient. Real-time PCR was used to assess the expression of COX-2, 12-LOX, and iNOS. RESULTS: COX-2 and 12-LOX mRNA expressions are significantly increased in HNSCC compared with adjacent normal mucosa. Expression of iNOS was not significantly elevated in overall head and neck cancer tissues compared with normal mucosa. However, iNOS expression was found to be significantly elevated in patients with laryngeal cancer. CONCLUSION: These data suggest that COX-2 and 12-LOX may play a role in carcinogenesis of head and neck cancer. iNOS as well as COX-2 and 12-LOX may play a role in carcinogenesis of laryngeal cancer.

Pediatric endonasal endoscopic dacryocystorhinostomy.

OBJECTIVE: Nasolacrimal duct obstruction is a relatively common problem among children. Although spontaneous resolution is possible and various conservative treatment options are available, dacryocystorhinostomy is recommended for persistent epiphora. The aim of this study was to report our experience of performing 83 procedures of pediatric endoscopic dacryocystorhinostomy. METHODS: This retrospective study included 71 children who underwent endonasal endoscopic dacryocystorhinostomy between 2000 and 2011. Thirteen of these children had bilateral procedures. The diagnosis of nasolacrimal duct obstruction was based on the presence of eye discharge, the patient's history obtained from his or her parents and the results of testing the patency of the nasolacrimal canal by irrigating the lacrimal sac. The procedure was considered to be successful if the patient's eye discharge was completely resolved and the dacryocystorhinostomy ostium was patent at end of the postoperative first year. RESULTS: Eighty-three dacrycystorhinostomy procedures were performed in 71 children. There were 35 (49.3%) male and 36 (50.7%) female patients. The age of the patients ranged between 11 months and 14 years, with a mean of 8.9 years. The mean follow-up period was 27.1 months (range of 14-84 months). The overall success rate for primary endoscopic dacryocystorhinostomy was 92.7%. No major complications were encountered in any of the surgical procedures. CONCLUSION: Pediatric endonasal endoscopic dacryocystorhinostomy is a safe and effective procedure to correct nasolacrimal system obstruction in cases that are unresponsive to conservative treatments. It has a high success rate and a low incidence of complications.

Association between the self-insertion of nasal and aural foreign bodies and attention-deficit/hyperactivity disorder in children.

OBJECTIVE: To investigate whether the prevalence of attention-deficit/hyperactivity disorder (ADHD) is higher in children presenting with nasal and aural foreign bodies than in the control group. METHODS: The present study was conducted between April 2012 and December 2012 and included 60 pediatric patients presenting with self-inserted nasal and aural foreign bodies and 50 healthy controls aged between 3 and 9 years. The Conner Parent Rating Scale (CPRS) and Turgay's DSM-IV based ADHD and disruptive behavior disorders screening scale (T-DSM-IV-Scale) were used to investigate ADHD. RESULTS: The difference between the patient group and the control group was significant with respect to the abnormal scores obtained from all the subscales (p < 0.05). In children between 5 and 9 years of age, the abnormal scores were significantly higher in the patients than the controls for all the subscales (p < 0.05). However, in children between 3 and 4 years of age, there were no significant differences between the patients and the controls for the scores obtained from all the subscales (p > 0.05). No statistically significant difference was found between the patients with a previous history of self-inserted foreign bodies and those without any history of foreign body insertion (p > 0.05). CONCLUSIONS: The findings of our study demonstrated a possible association between the self-insertion of nasal and aural foreign bodies and ADHD. Clinicians should be aware of the possible presence of ADHD in children, especially in those patients between 5 and 9 years of age who present with self-inserted nasal and aural foreign bodies.

Systemic steroid versus combined systemic and intratympanic steroid treatment for sudden sensorineural hearing loss.

OBJECTIVE: The aim of this study was to evaluate the effectiveness of oral steroid treatment versus combined oral and intratympanic dexamethasone injection for idiopathic sudden sensorineural hearing loss. METHODS: This was a retrospective case review in which 30 patients in the oral steroid group and 39 patients in the combined oral and intratympanic steroid injection group were compared. RESULTS: The comparison of the initial pure tone audiometry (PTA) threshold results revealed a significant difference between the systemic steroid (SS) group and the systemic and intratympanic steroid group. The initial PTA was 74.33 ± 22.64 dB (mean ± SD) in the SS group and 87.49 ± 26.22 dB (mean ± SD) in the intratympanic steroid group. The difference in the initial PTA results was statistically significant between the SS group and intratympanic steroid group (P < 0.05, P = 0.032). The pure-tone gain in the SS group was 20.97 ± 27.47 dB (mean ± SD), and that of the group treated with both systemic and intratympanic steroids was 19.36 ± 22.16 dB (mean ± SD) (P = 0.49). CONCLUSIONS: The results of this study indicate that, in sudden sensorineural hearing loss, the administration of intratympanic steroids in conjunction with SS therapy appears to have the same effect on the restoration of hearing "as the effect obtained using SS therapy alone."

Complications and treatment of chronic otitis media.

OBJECTIVE: The aim of this study was to investigate the etiologic factors and treatment types for chronic otitis media (COM) complications. METHODS: In this study, the data from 82 patients who had been diagnosed and treated at the Departments of Otolaryngology and Neurosurgery of Gaziantep University between 1999 and 2011 for complications from COM were retrospectively reviewed. The chosen surgical procedure was based on the type of complication and the ear pathology. RESULTS: The study included 55 male and 27 female patients. Ten patients (12.2%) had intracranial complications, and 72 patients (87.80%) had extracranial complications. There were 47 patients with cholesteatoma. Radical mastoidectomy was performed on 46 patients, canal-wall-down mastoidectomy was performed on 30 patients, and canal-wall-up mastoidectomy was performed on 6 patients. Five patients underwent neurosurgical operations because of COM complications. CONCLUSIONS: Although the rate of COM complications has recently declined, it remains important to diagnose COM without delay and to use appropriate treatments for the patients because COM complications are associated with poor outcomes.

Oxidative stress in chronic otitis media.

Chronic otitis media usually presents with a benign tumor-like lesion of the temporal bone known as a cholesteatoma. The role of oxidative stress in the pathogenesis of chronic otitis media and cholesteatoma has not yet been fully explored. Therefore, the aim of this study was to investigate the oxidative stress markers and antioxidant enzymes in patients with cholesteatomatous and noncholesteatomatous chronic otitis media and in healthy subjects. A prospective controlled trial was performed on cholesteatomatous and noncholesteatomatous chronic otitis media patients in a tertiary referral center in a university hospital. A total of 75 subjects, including 25 cholesteatomatous and 25 noncholesteatomatous chronic otitis media patients and 25 healthy subjects participated in this study. Serum total oxidant status (TOS) and oxidative stress index (OSI) levels were significantly increased in the patient groups with or without cholesteatoma compared with the control group. Serum total antioxidant status (TAS) levels and Paraoxonase and arylesterase activity were significantly lower in the patient groups with or without cholesteatoma compared with the control group. Serum TOS and OSI levels were lower in the noncholesteatomatous group, whereas serum TAS levels were higher compared with the cholesteatomatous group. Serum arylesterase activity was significantly lower in the noncholesteatomatous group compared with the control group. The results of this study reveal that in cholesteatoma cases, the oxidative stress and antioxidant enzyme imbalance were more significant than in cases of chronic otitis media without cholesteatoma.

The polymorphisms of the MBL2 and MIF genes associated with Pediatric Cochlear Implant Patients.

OBJECTIVES: Mannose-binding lectin and macrophage migration inhibitory factor gene polymorphisms are associated with several acute/chronic autoimmune or inflammatory diseases. The aim of this study was to investigate if there was any association between mannose-binding lectin 2 (MBL2) and macrophage migration inhibitory factor (MIF) gene polymorphisms and profound congenital sensorineural hearing loss in children who underwent cochlear implantation. METHODS: A total of 62 patients with congenital hearing loss and 80 age- and sex-matched healthy controls were evaluated for codon 54 A/B polymorphisms in MBL2 and the-173 G/C polymorphism in MIF by using the polymerase chain reaction and restriction fragment length polymorphism method. RESULTS: The frequency of the BB genotype of MBL2 and MIF -173 GC genotype were statistically significantly higher in the patient group than in the controls (p=0.0127, p=0.0408, respectively). CONCLUSION: In this study, we found that a subject who is homozygous for the variant allele B of codon 54 of the MBL2and heterozygous for variant allele C of -173 MIF has a risk factor for sensorineural hearing loss.