To clarify the relationship between Eustachian tube dimensions and chronic otitis media aetiology using temporal bone computed tomography.

The data of 231 adults who had undergone surgery for unilateral chronic otitis media were reviewed retrospectively. Diseased and healthy ears were enrolled in groups 1 and 2, respectively. Group 1A included chronic otitis media with cholesteatoma (n = 28) and group 1B included chronic otitis media without cholesteatoma (n = 203). The Eustachian tube dimensions of groups 1 and 2 were compared, to clarify the relationship between the Eustachian tube dimensions and chronic otitis media aetiology. Groups 1A and 1B were compared to assess the effect of Eustachian tube dimensions on cholesteatoma development.

The Eustachian tube was shorter, narrower and located more horizontally in ears with chronic otitis media. No significant difference was found between groups 1A and 1B.

Eustachian tube dimensions are closely related to chronic otitis media aetiopathology, but are not related to cholesteatoma development.

Microbial infection plays an important role in exacerbation of chronic otitis media. The aim of this study was to analyse the microbiota in chronic otitis media in the context of local treatment.

In this prospective study, samples for microbiological examination were taken from 119 patients who underwent operation because of chronic otitis media.

The results were compared between groups depending on the type of operation (none, tympanoplasty or radical), the presence of cholesteatoma or granulomatous tissue or discharge from the ear as a symptom of exacerbation. Antibiotic susceptibility of germs was analysed to define the strategy of treatment. A total of 209 samples were collected from 119 patients with chronic otitis media.

Pseudomonas aeruginosa and Staphylococcus aureus were pathogens most frequently identified from the ear in the course of chronic otitis media. Pseudomonas aeruginosa was concerned with major pathology of the middle ear (radical surgery, cholesteatoma or granulomatous tissue, persisting discharge after treatment), whereas Staphylococcus aureus was obtained in dry perforations without other pathology in the middle-ear cavity. Ciprofloxacin was effective against Staphylococcus aureus, but Pseudomonas aeruginosa strains were ciprofloxacin resistant.

Cholesteatoma-related bone destruction is the cause of many complications due to chronic otitis media. This study aimed to evaluate osteoclastic activity in cholesteatoma-related bone destruction using tartrate-resistant acid phosphatase 5b, an enzyme specific to osteoclastic activity.

Seventy-two patients diagnosed with chronic otitis media were included in this study and were divided into two groups: with and without bone destruction. The blood serum and tissue tartrate-resistant acid phosphatase 5b levels from both groups were compared.

There were no significant differences in the level of serum enzymes between both groups. However, in tissue samples, tartrate-resistant acid phosphatase 5b levels were significantly lower in the bone destruction group than the group without bone destruction.

This study determined that the level of tartrate-resistant acid phosphatase 5b, a specific enzyme for osteoclastic activity in cholesteatoma-related bone destruction, is locally decreased. This data suggests that osteoclastic activity may decrease in cholesteatoma-related bone destruction. However, further experimental and clinical studies are required to clarify this highly complex mechanism.

To evaluate the diagnostic value of echo-planar diffusion-weighted magnetic resonance imaging in pre-operative detection of suspected primary acquired, residual and/or recurrent cholesteatoma.

Fifty-eight chronic otitis media patients with suspected cholesteatoma were thus evaluated two weeks pre-operatively, and divided into group one (41 patients, no previous surgery, suspected primary acquired cholesteatoma) and group two (17 patients, previous surgery, scheduled ‘second-look’ or revision surgery for suspected residual or recurrent cholesteatoma). Patients' operative, histopathology and radiological findings were compared.

Cholesteatoma was found in 63 per cent of group one patients and 58 per cent of group two patients at surgery. Histopathological examination of surgical specimens indicated that imaging accurately predicted the presence or absence of cholesteatoma in 90 per cent of group one (37/41; 23 true positives, 14 true negatives) and 76 per cent of group two (13/17; seven true positives, six true negatives). Three patients in both groups were false negative diagnoses and one patient in both groups was a false positive. The sensitivity, specificity, and positive and negative predictive values of echo-planar diffusion-weighted magnetic resonance imaging of cholesteatoma were respectively 88, 93, 95 and 82 per cent in group one and 70, 85, 87 and 66 per cent in group two.

Echo-planar diffusion-weighted magnetic resonance imaging is a valuable technique with high sensitivity and specificity for cholesteatoma imaging.

To compare the functional results of type I tympanoplasty performed with either temporalis fascia or a perichondrium and cartilage island flap, in patients with bilateral chronic otitis media.

The study included primary tympanoplasty cases with a subtotal perforation, an intact ossicular chain, a dry ear for at least one month and normal middle-ear mucosa, together with contralateral tympanic membrane perforation. Temporalis fascia tympanoplasty was undertaken in 41 patients, and cartilage tympanoplasty in 39 patients.

The graft success rate was 65.9 per cent for the fascia group and 92.3 per cent for the cartilage group. Post-operatively, the mean ± standard deviation air conduction threshold was 28.54 ± 14.20 dB for the fascia group and 22.97 ± 8.37 dB for the cartilage group, while the mean ± standard deviation bone conduction threshold was 11.71 ± 8.50 dB for the fascia group and 7.15 ± 5.56 dB for the cartilage group.

In patients with bilateral chronic otitis media, cartilage tympanoplasty seems to provide better hearing results and graft success rates.

We evaluated use of the periodically rotated overlapping parallel lines with enhanced reconstruction diffusion-weighted imaging sequence, compared with conventional echo planar magnetic resonance imaging, in the detection of middle-ear cholesteatoma.

Sixteen patients awaiting second-stage combined approach tympanoplasty and three patients awaiting first-stage combined approach tympanoplasty underwent magnetic resonance imaging with both (1) the periodically rotated overlapping parallel lines with enhanced reconstruction sequence (i.e. non echo planar imaging) and (2) the array spatial sensitivity encoding technique sequence (i.e. echo planar imaging). Two neuroradiologists independently evaluated the images produced by both sequences. Radiology findings were correlated with surgical findings.

Seven cholesteatomas were found at surgery. Neither of the assessed imaging sequences were able to detect cholesteatoma of less than 4 mm. Rates for sensitivity, specificity, and positive and negative predictive values are presented.

Decisions on whether or not to operate for cholesteatoma cannot be made based on the two imaging sequences assessed, as evaluated in this study. Other contributing factors are discussed, such as the radiological learning curve and technical limitations of the magnetic resonance imaging equipment.

Upon direct inspection of surgically removed ossicles from the ears of patients with long-term post-mastoidectomy cavity problems, the extent of malleus destruction often appears greater in patients with a longer duration of cavity problems, whereas the extent of incus destruction does not appear to correlate with the duration of cavity problems. This study aimed to investigate this impression.

As a result of total middle-ear reconstruction, 41 ossicles (21 malleus and 20 incus bones) were obtained from 31 patients with post-mastoidectomy cavity problems. The ossicles were examined histopathologically, and the proportion of lamellar bone area to total bone area (expressed as percentage lamellar bone) was measured. We also calculated the inter-operation time, i.e. the time period between the previous mastoidectomy and the recent total middle-ear reconstruction; this parameter was used as an approximate measure of the duration of the patient's cavity problem. Correlations between percentage lamellar bone and inter-operation time were calculated for the two ossicles.

The range of inter-operation times was seven to 65 years. We observed a correlation between percentage lamellar bone and inter-operation time for malleus bones (r = −0.512, p < 0.05), but not for incus bones.

These results were in agreement with our pre-study impressions.

This study aimed to compare outcomes for mastoidotympanoplasty and for tympanoplasty alone in cases of quiescent, tubotympanic, chronic, suppurative otitis media.

Single-blinded, randomised, controlled study within a tertiary referral hospital.

Sixty-eight cases were randomly allocated into two groups. In group one, 35 ears underwent type one tympanoplasty along with cortical mastoidectomy. In group two, 33 ears underwent type one tympanoplasty alone. Outcome measures were as follows: perforation closure and graft uptake, hearing improvement, disease eradication, and post-operative complications.

There were no statistically significant differences in hearing improvement, tympanic perforation closure, graft uptake or disease eradication, comparing the two groups at three and six months post-operatively.

Mastoidotympanoplasty was not found to be superior to tympanoplasty alone over a short term follow-up period. Hence, it may not be necessary to undertake routine mastoid exploration at this stage of disease.

‘Over-under’ myringoplasty is a versatile and effective surgical technique for tympanic membrane repair. The main drawbacks are possible trauma to the inner ear, due to manipulation of the malleus, and graft detachment from the apical portion of the malleus during the healing process, with consequent reduction of sound transfer function. To obviate these disadvantages, we have modified the over-under myringoplasty by maintaining anchorage of the tympanic membrane to the umbus.

A total of 78 umbus-anchored over-under myringoplasties were performed from 2004 to 2006 in 63 patients. After elevation of the tympanomeatal flap, the malleus was freed from the tympanic membrane in a superior to inferior direction, up to the region immediately superior to the umbus. A large graft with a radial slit was distended under the tympanic remnants and annulus, and the two tongues were positioned to surround the umbus area and overlapped under a non-perforated portion of the tympanic membrane.

Graft take was obtained in 71 ears (91 per cent). The auditory results showed an average residual air–bone gap of 6.7 dB, which was significantly better (p = 0.04) in comparison to that obtained in ears undergoing traditional over-under myringoplasty (11.9 dB).

Modification of the over-under myringoplasty by anchoring the graft to the umbus preserves both lever and catenary effects of the tympano-ossicular system, reduces traumatising manoeuvres during dissection of the tympanic membrane from the malleus, and yields excellent results in terms of graft take and auditory outcome.

Retrospective.

Among 963 cases undergoing revision mastoid surgery, 13 patients suffered brain herniation. These cases were identified and analysed.

All 13 patients' initial diagnosis was chronic suppurative otitis media with cholesteatoma, and all had undergone previous mastoid surgery resulting in a defect in the tegmen and weakening of the dura mater. The revision procedures performed included 10 (76.9 per cent) modified radical mastoidectomies without ossicular chain reconstruction and one (7.6 per cent) modified radical mastoidectomy with ossicular chain reconstruction; two (15.3 per cent) patients required a blind sac closure. Brain herniation and/or cerebrospinal fluid leak were repaired by a transmastoid ± minicraniotomy procedure.

Injury to the tegmen and dura should be avoided during surgery for chronic middle-ear disease. Cerebrospinal fluid leaks, if encountered, should be managed in the same surgical session. The transmastoid approach is helpful in repairing defects smaller than 1 cm in diameter, whereas the combined transmastoid-minicraniotomy approach provides good access when closing defects larger than 1 cm in diameter and also enables auto-calvarial grafting.

To investigate the use of a new technique to close persistent tympanic membrane perforations under general anaesthesia, in patients in whom this has previously been considered impractical.

Twenty patients aged 50 years and over were recruited. All had a persistent, symptomatic tympanic membrane perforation in at least one ear. Pre-operatively, an audiogram was performed and the tympanic membrane was assessed in order to establish the site and size of the perforation. Under general anaesthesia, the edges of the perforation were freshened and a sheet of Epifilm, trimmed to a size roughly 2 mm larger in diameter than the perforation, was tucked through the perforation. The ear was dressed appropriately. Patients were seen two weeks post-operatively in the out-patients department and reassessed.

The study was based at Poole General Hospital, a District General Hospital.

Twenty patients were recruited from the out-patients clinics of Poole Hospital ENT department.

(1) closure of the perforation, as a percentage of the original size; (2) improvement of hearing, as an average across all frequencies, expressed in dB hearing level; and (3) presence or absence of discharge.

Five patients were operated upon and assessed six weeks post-operatively. The Epifilm had dissolved but the perforations remained the same size in all five patients. There were no other adverse effects. Pure tone audiometry at this stage was redundant. The study was subsequently aborted.

The authors conclude that repair of tympanic membrane perforations with hyaluronic acid ester films is not to be recommended.

The aims of this study were (1) to explore whether the experience at the Radcliffe Infirmary (Oxford, UK) supported the use of combined approach tympanoplasty for cholesteatoma, by determining the rate of disease at subsequent surgery, and (2) to assess whether this rate differed from findings reported elsewhere in the literature, possibly due to the effect of using an oto-endoscope.

Retrospective case review, with data entered prospectively for operations performed by a single surgeon.

Tertiary referral hospital.

Between January 1998 and December 2004 inclusive, 66 patients underwent 68 primary procedures, with data available for all ‘second looks’.

Diagnostic and therapeutic operations for cholesteatoma were performed.

All patients in this study attended follow up and underwent a second look operation, during which the rate of residual and recurrent cholesteatoma was determined. An oto-endoscope was used at all primary and subsequent surgery.

The mean interval between the first and second combined approach tympanoplasty procedures was 16 months, and that between the second and third such procedures was 19 months (10 patients). One patient underwent a fourth combined approach tympanoplasty procedure, 17 months after a third such procedure. The rate of cholesteatoma at second combined approach tympanoplasty was 20.6 per cent (14/68); this was judged to be residual in 10 ears (14.7 per cent) and to be recurrent, with the redevelopment of retraction pockets, in four ears (5.9 per cent). The rate of cholesteatoma at third combined approach tympanoplasty was 20 per cent (two of 10); of these two, one patient had a small pearl in the middle ear removed with the aid of a potassium titanyl phosphate laser. There was no disease present in one patient at a fourth combined approach tympanoplasty. Only four patients required a modified radical mastoidectomy.

Cholesteatoma remains a disease with significant morbidity. Endoscope-assisted surgery may decrease the morbidity of second look surgery and may improve the clearance of disease in appropriately selected patients.

To present our personal experience of a series of 10 patients suffering from tympanosclerosis with functional blocking of the stapes or footplate, who underwent malleostapedotomy surgery. The criteria for patient selection for this type of operation, and its results and complications, are discussed.

Prospective study.

Incus and malleus dysfunction was observed in 70 per cent of cases, either alone or combined with fixation of the stapes. The post-operative hearing results were considered to be satisfactory (i.e. within 20 dB) in 80 per cent of cases. Only one patient had sensorineural hearing loss over 10 dB.

Malleostapedotomy has proved its practicability in the treatment of patients with fixed footplate or stapes complicated by ankylosis of the incudomalleolar joint. This procedure can be considered a further, valid technique within the otologist's surgical armamentarium.