Otology

Case report: Dermal inclusion cyst of the external auditory canal

December 20, 2013     Eric W. Cerrati, MD; Jonathan S. Kulbersh, MD; Paul R. Lambert, MD
article

Abstract

Dermal inclusion cysts are benign masses that arise as the result of the entrapment of ectodermal components during embryogenesis. Their presenting symptoms are a direct result of the mass effect of the growing cyst. We describe the case of a 23-month-old girl who presented with a single, large dermal inclusion cyst in the external auditory canal. Our review of the literature revealed that only 2 other cases of a dermal inclusion cyst in this location have been previously reported.

Immunization guidelines for cochlear implant recipients

October 23, 2013     Barry E. Hirsch, MD
article

Patients who have a cochlear implant are considered to be at a higher risk of developing meningitis following otitis media. Whether this occurs along the electrode going from the middle ear into the cochlea or through a blood-borne pathway is unclear.

Extrusion of hydroxyapatite ossicular prosthesis

October 23, 2013     Danielle M. Blake, BA; Senja Tomovic, MD; Robert W. Jyung, MD
article

Extrusion of hydroxyapatite prostheses is unfortunately a common complication of middle ear surgery.

Dehiscence of the high jugular bulb

October 23, 2013     Min-Tsan Shu, MD; Yu-Chun Chen, MD; Cheng-Chien Yang, MD; Kang-Chao Wu, MD
article

The conservative treatment for a high jugular bulb is regular follow-up with serial imaging studies to detect possible progression, even in asymptomatic cases.

Paraganglioma presenting as cholesterol granuloma of the petrous apex

September 18, 2013     Selena E. Heman-Ackah, MD, MBA; Tina C. Huang, MD
article

Abstract

We report the unique finding of a petrous apex cholesterol granuloma associated with a paraganglioma, also known as a glomus jugulare tumor, in a 52-year-old woman who presented to our department with pulsatile tinnitus, hearing loss, aural fullness, and disequilibrium. She had been treated for a petrous apex cholesterol granuloma 20 years earlier, at which time she had undergone drainage of the granuloma via subtotal petrous apicectomy. When she came to our facility approximately 20 years later, she had signs and symptoms consistent with a jugular paraganglioma, which was likely to have been present at the time of her initial presentation for the cholesterol granuloma. In fact, microscopic bleeding from the paraganglioma might have led to the formation of the cholesterol granuloma. The metachronous presentation of these two entities, which to our knowledge has not been reported previously in the literature, indicates the potential association of paragangliomas with the formation of cholesterol granulomas of the petrous apex.

Medial canal fibrosis

September 18, 2013     Joseph A. Ursick, MD; John W. House, MD
article

Medial canal fibrosis is an uncommon condition characterized by progressive stenosis of the bony external auditory canal.

Thiersch skin grafting in otologic surgery

August 21, 2013     Helen Xu, MD; Natasha Pollak, MD, MS; and Michael M. Paparella, MD
article

Abstract

Thiersch skin grafting is an old but highly effective surgical technique in otology. We frequently place a Thiersch graft after otologic procedures that either create a mastoid cavity or result in reduced skin coverage of a portion of the external auditory canal. The purpose of this article is to introduce this surgical technique to a new generation of otologists. We discuss its indications, the surgical technique, tips for a successful outcome, and postoperative care. A key to successful skin grafting is to perform the procedure about 10 days after the primary procedure to allow sufficient time for the formation of an adequate vascular bed at the recipient site. The goal in all cases is to achieve a safe, dry ear that is covered with keratinizing squamous epithelium. Thiersch grafting accomplishes this very well.

Middle ear effusion in adult ICU patients: A cohort study

August 21, 2013     Bradley W. Kesser, MD; Charles Ryan Woodard, MD; Nicholas G. Stowell, MD; and Samuel S. Becker, MD
article

Abstract

We conducted a prospective study of 74 adults-34 men and 40 women, aged 18 to 90 (mean: 60.2)-to determine the prevalence of middle ear effusion (MEE) among patients in the setting of an intensive care unit (ICU) and to compare the findings with those of a control group of non-ICU hospitalized patients. Other goals were to identify risk factors associated with MEE in ICU patients and to evaluate any association with fever. Both groups included 37 patients. MEE was present in 19 patients (51.4%) in the ICU group, compared with only 2 patients (5.4%) in the control group (p < 0.01; odds ratio: 18.5; 95% confidence interval: 3.9 to 88.3). In the ICU group, there were statistically significant associations between MEE and both the use of mechanical ventilation (p = 0.03) and the use of sedation (p = 0.02). No significant relationships were seen in terms of length of stay, body position, the use of an endotracheal tube, the length of ventilation, and the use of a feeding tube. Fever was present in 8 ICU patients (21.6%) and 3 controls (8.1%), but none of the fevers was associated with MEE. We conclude that adult ICU patients have a high prevalence of MEE (51.4% in our sample) that is perhaps unrecognized. We believe that MEE in these patients is most likely related to altered consciousness, sedation, and mechanical ventilation. MEE was an unlikely cause of fever.

Transient auditory dysfunction: A description and study of prevalence

August 21, 2013     Laurence Maximilian Almond, MB ChB; Ketul Patel, MB ChB; and Darius Rejali, MB ChB
article

Abstract

Transient auditory dysfunction (TAD) is a previously undescribed symptom complex of unknown cause. It is characterized by short-lasting sensorineural hearing loss (unilateral or bilateral), it is associated with tinnitus, it resolves completely within minutes, and it is not accompanied by vestibular symptoms. We conducted a cross-sectional prospective study to define TAD, find its prevalence, and discuss its significance. Two hundred healthy subjects between the ages of 16 and 49 years were surveyed using a questionnaire. Of these subjects, 41 (20.5%) reported experiencing symptoms of TAD. The mean number of episodes was 5.9 times per month, the mean duration was 41 seconds, and 80% experienced concomitant tinnitus. We conclude that TAD is a common finding in a healthy population. This may have implications for the pathogenesis of sudden-onset sensorineural hearing loss. Further longitudinal studies and detailed audiologic evaluation of patients with TAD are required to ascertain the significance, etiology, and pathophysiology of this condition.

Ganglion cyst in the external auditory canal

August 21, 2013     Chi-Kyou Lee, MD; Mee-Hye Oh, MD; and Kye Hoon Park, MD
article

In rare instances, ganglion cysts of the TMJ can pre-sent as a mass of the EAC, sometimes without obvious communication with the glenoid fossa.

Subcutaneous emphysema and pneumolabyrinth plus pneumocephalus as complications of middle ear implant and cochlear implant surgery

July 21, 2013     Brian J. McKinnon, MD, MBA; Tamara Watts, MD, PhD
article

Abstract

We conducted a retrospective case review at a tertiary academic medical center for the complications of pneumolabyrinth with pneumocephalus and subcutaneous emphysema after surgery for middle ear and cochlear implants. Charts of 76 cochlear implant and 2 middle ear implant patients from January 2001 through June 2009 were reviewed. We identified 1 cochlear implant recipient with pneumolabyrinth and pneumocephalus, and 1 middle ear implant recipient with subcutaneous emphysema. Surgical exploration was performed for the pneumolabyrinth with pneumocephalus; the subcutaneous emphysema was managed conservatively. The patient with the cochlear implant, who had had a ventriculoperitoneal shunt placed, experienced pneumolabyrinth with pneumocephalus 6 years after uneventful surgery. Middle ear exploration revealed no residual fibrous tissue seal at the cochleostomy. The middle ear and cochleostomy were obliterated with muscle, fat, and fibrin glue. The ventriculoperitoneal shunt was deactivated, with clinical and radiographic resolution. On postoperative day 5, the patient who had undergone the middle ear implant reported crepitance over the mastoid and implant device site after repeated Valsalva maneuvers. Computed tomography showed air surrounding the internal processor. A mastoid pressure dressing was applied and the subcutaneous emphysema resolved. These 2 cases support the importance of recognizing the clinical presentation of pneumolabyrinth with associated pneumocephalus, as well as subcutaneous emphysema. Securing the internal processor, adequately sealing the cochleostomy, and providing preoperative counseling regarding Valsalva maneuvers and the potential risk of cochlear implantation in the presence of a ventriculoperitoneal shunt may prevent adverse sequelae.

Using a capsule flap for the reconstruction of a partial auricular defect

July 21, 2013     Barsil Keklik, MD; Memet Yazar, MD; Karaca Basaran, MD; Erdem Guven, MD; Samet Vasfi Kuvat, MD
article

Abstract

In this article we describe the capsular flap for covering the posterior surface of cartilaginous framework in ear reconstruction. This technique has not been previously described in the published literature.

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