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The New England Journal of Medicine Sep 2017
Topics: Adult; Foreign Bodies; Humans; Male; Neck Pain; Ossification, Heterotopic; Temporal Bone
PubMed: 28953433
DOI: 10.1056/NEJMicm1703542 -
BioMed Research International 2015Although air cells within temporal bone may play an important role in the transmission of pulsatile tinnitus (PT) noise, it has not been studied systematically.
BACKGROUND
Although air cells within temporal bone may play an important role in the transmission of pulsatile tinnitus (PT) noise, it has not been studied systematically.
PURPOSE
To evaluate the difference in temporal bone pneumatization between PT patients with sigmoid sinus diverticulum and/or dehiscence (SSDD) and healthy people.
MATERIAL AND METHODS
A total of 199 unilateral persistent PT patients with SSDD and 302 control subjects underwent dual-phase contrast-enhanced CT (DP-CECT), to assess the grade of temporal bone pneumatization in each ear.
RESULTS
In the bilateral temporal bone of 302 controls, 16 ears were grade I, 53 were grade II, 141 were grade III, and 394 were grade IV. Among the affected ears of 199 PT cases, 1 ear was grade I, 18 were grade II, 53 were grade III, and 127 were grade IV. There was no significant difference in the pneumatization grade between the affected PT ear and either ear in the healthy subjects (p > 0.05).
CONCLUSION
Although air cells within the temporal bone are an important factor in the occurrence of PT, its severity does not differ significantly from the pneumatization of healthy people.
Topics: Adolescent; Adult; Aged; Aged, 80 and over; Colon, Sigmoid; Diverticulum; Female; Humans; Male; Middle Aged; Surgical Wound Dehiscence; Temporal Bone; Tinnitus; Tomography, X-Ray Computed
PubMed: 26581544
DOI: 10.1155/2015/970613 -
Head and Neck Pathology Dec 2021Sinonasal papilloma (SP), formerly Schneiderian papilloma, represents a rare group of benign epithelial neoplasms, most commonly identified in the sinonasal tract, while... (Review)
Review
Sinonasal papilloma (SP), formerly Schneiderian papilloma, represents a rare group of benign epithelial neoplasms, most commonly identified in the sinonasal tract, while less frequently identified in the pharynx, lacrimal sac, and middle ear. Within temporal bone sinonasal-type papilloma (TBSP), there seems to be a much higher recurrence and malignant transformation risk than those identified in the sinonasal tract. Based on this clinical report and a review of the cases reported in the English literature, 49% of the 57 cases developed in the setting of concurrent or antecedent sinonasal or nasopharyngeal SP. There is an equal sex distribution (26 females and 31 males), with a broad age range (19-81 years) at presentation (median 56 years; average 54 years). Three patients had bilateral disease. Symptoms include a mass lesion with hearing loss, otitis media, otorrhea, otalgia, and tinnitus, among others. Inverted SP was identified in 42 patients, oncocytic SP in six, and exophytic SP in four (undefined in the remainder). Recurrence was identified in 38 of 49 patients with follow-up (78%), often with multiple recurrences over time, with carcinoma developing in the temporal bone in 19 patients (33%), with males developing carcinoma by a 1.7:1 ratio over females. Surgery was the treatment of choice (radical mastoidectomy) with 6 patients (10%) dead of disease (median 30 months, mean 38 months), while 47 patients were alive at last follow-up: 31 without disease (mean 33 months); 7 with locally recurrent disease (mean 20 months); 9 patients alive but with unknown disease status; and 4 patients without follow-up. In conclusion, TBSP is frequently identified in the setting of concurrent sinonasal tract disease, showing similar histologic features to sinonasal tract counterparts. There is no sex predilection, with patients most commonly presenting in the sixth decade of life. Recurrences are common, with carcinoma developing much more frequently than in sinonasal tract papilloma (33%), but recognizing that carcinoma may be documented in either or both anatomic sites. Overall outcome is excellent, with long term clinical follow-up warranted to manage recurrence or malignant transformation.
Topics: Ear Neoplasms; Ear, Middle; Earache; Hearing Loss; Humans; Male; Middle Aged; Neoplasm Recurrence, Local; Otitis Media; Papilloma; Skull Neoplasms; Temporal Bone; Tinnitus
PubMed: 34021464
DOI: 10.1007/s12105-021-01334-4 -
Folia Morphologica 2020The study of the association between superior semicircular canal and other dehiscences in the temporal bone.
BACKGROUND
The study of the association between superior semicircular canal and other dehiscences in the temporal bone.
MATERIALS AND METHODS
We have studied computed tomography of radiologically diagnosed people with superior or posterior semicircular canal dehiscences, in four health centres. In addition, we have studied one isolated human temporal bone, one skull and one cadaver head belonging to the collection of the Department of Human Anatomy and Histology of the University of Zaragoza that had dehiscence in the superior semicircular canal.
RESULTS
The most frequent association that we observed was between superior semicircular canal dehiscence and tegmen tympani dehiscence (37.33%). Three cases (two clinical cases and one isolated temporal bone) showed multiple associated dehiscences (tegmen tympani, mastoid antrum, posterior semicircular canal, internal auditory canal, glenoid cavity, tympanum bone and geniculate ganglion) associated with superior semicircular canal dehiscence.
CONCLUSIONS
When the superior semicircular canal dehiscence is associated to other in the petrous bone (tegmen tympani, mastoid antrum, posterior semicircular canal, internal auditory canal) could be grouped into the same syndrome called "otic capsule syndrome", since they have the same origin and common aetiology (otic capsule).
Topics: Ear, Middle; Humans; Semicircular Canal Dehiscence; Semicircular Canals; Temporal Bone; Tomography, X-Ray Computed
PubMed: 31886879
DOI: 10.5603/FM.a2019.0138 -
Brain and Behavior Apr 2022To assess the influencing factors of transtemporal window quality and identify patients suitable for transcranial sonography (TCS) examination in two-dimensional imaging.
OBJECTIVE
To assess the influencing factors of transtemporal window quality and identify patients suitable for transcranial sonography (TCS) examination in two-dimensional imaging.
METHODS
In this cross-sectional study, TCS was performed in 161 consecutive patients through the temporal bone window (TBW) in the neurology or neurosurgery department. Each patient's sex, age, height, weight, and temporal bone thickness (TBT) were collected. After examination, the patients were divided into two groups: TBW success and TBW failure. The data were statistically compared between the two groups.
RESULTS
Among the studied population, the total TBW success rate was 80.1% (95% confidence interval [CI]: 74-86). The TBW success rate was 91.4% (95% CI: 85-98) in males and 70.9% (95% CI: 61-81) in females (p = .001). Sex (p = .001), age (p = .002), height (p = .047), and TBT (p < .001) showed significant differences between the TBW success and failure groups. In males, only TBT (p = .001) showed a significant difference; in females, age (p < .001) and TBT (p = .003) showed a significant difference. The area under the receiver operating characteristic curve (AUC) of sex, age, and TBT and their combination was 0.686, 0.659, 0.842, and 0.922 (p < .001), respectively. The AUC of the combination of parameters was significantly greater than that of age and sex alone (p = .007; p = .0002) but not greater than that of TBT (p = .090).
CONCLUSIONS
The TBW success rate varied with sex, age, height, and TBT. Males, younger patients, taller patients, and patients with a thinner temporal bone tended to be more suitable for the examination by TCS.
Topics: Cross-Sectional Studies; Female; Humans; Male; ROC Curve; Temporal Bone; Ultrasonography; Ultrasonography, Doppler, Transcranial
PubMed: 35238499
DOI: 10.1002/brb3.2543 -
The Annals of Otology, Rhinology, and... Nov 2022Temporal bone simulation is now commonly used to augment cadaveric education. Assessment of these tools is ongoing, with haptic modeling illustrating dissimilar motion...
OBJECTIVE
Temporal bone simulation is now commonly used to augment cadaveric education. Assessment of these tools is ongoing, with haptic modeling illustrating dissimilar motion patterns compared to cadaveric opportunities. This has the potential to result in maladaptive skill development. It is hypothesized that trainee drill motion patterns during printed model dissection may likewise demonstrate dissimilar hand motion patterns.
METHODS
Resident surgeons dissected 3D-printed temporal bones generated from microCT data and cadaveric simulations. A magnetic position tracking system (TrakSTAR Ascension, Yarraville, Australia) captured drill position and orientation. Skill assessment included cortical mastoidectomy, thinning procedures (sigmoid sinus, dural plate, posterior canal wall) and facial recess development. Dissection was performed by 8 trainees (n = 5 < PGY3 > n = 3) using k-cos metrics to analyze drill strokes within position recordings. K-cos metrics define strokes by change in direction, providing metrics for stroke duration, curvature, and length.
RESULTS
-tests between models showed no significant difference in drill stroke frequency (cadaveric = 1.36/s, printed = 1.50/s, < .40) but demonstrate significantly shorter duration (cadaveric = 0.37 s, printed = 0.16 s, < .01) and a higher percentage of curved strokes (cadaveric = 31, printed = 67, < .01) employed in printed bone dissection. Junior staff used a higher number of short strokes (junior = 0.54, senior = 0.38, < .01) and higher percentage of curved strokes (junior = 35%, senior = 21%, < .01).
CONCLUSIONS
Significant differences in hand motions were present between simulations, however the significance is unclear. This may indicate that printed bone is not best positioned to be the principal training schema.
Topics: Cadaver; Humans; Mastoidectomy; Models, Anatomic; Stroke; Temporal Bone
PubMed: 34872376
DOI: 10.1177/00034894211059310 -
AJNR. American Journal of Neuroradiology Nov 2021A handful of cases of protuberant fibro-osseous lesions of the temporal bones have been described in the literature to date, with primary focus on the pathologic... (Review)
Review
A handful of cases of protuberant fibro-osseous lesions of the temporal bones have been described in the literature to date, with primary focus on the pathologic features. Here we review 3 cases of pathology-proved protuberant fibro-osseous lesions of the temporal bone and include a literature review with a focus on the imaging features. While rare, these lesions have near-pathognomonic imaging features defined by a location at the cortex of the outer table of the temporal bone at the occipitomastoid suture, lack of involvement of the underlying marrow, variable mineralization, and MR signal characteristics atypical of a chondroid lesion. One case in this series was FDG-avid and had occasional mitotic features, possibly reflecting an aggressive variant. Neuroradiologists should be familiar with this benign diagnosis to aid in timely identification and avoid unnecessary additional imaging.
Topics: Humans; Temporal Bone
PubMed: 34593383
DOI: 10.3174/ajnr.A7298 -
BMJ Case Reports Apr 2022Osteoma of the temporal bone is an unusual benign slow-growing tumour composed of mature lamellar bone. It is a single pedunculated mass that often occurs unilaterally....
Osteoma of the temporal bone is an unusual benign slow-growing tumour composed of mature lamellar bone. It is a single pedunculated mass that often occurs unilaterally. Osteomas of external auditory canal are more common than in the other parts of temporal bone. Clinical presentation includes ear pain, hearing loss, tinnitus or vertigo. More often these lesions are an incidental finding during radiographic evaluation. Surgical excision of the osteoma is preferred in cases with impending complications. Here, we report a 36-year-old woman who came with problems of ear discharge, ear pain, hearing loss and occasional bleeding from the ear. She was diagnosed with osteoma of temporal bone with erosion of lateral semicircular canal and facial canal. Osteoma was excised and the defective areas were reconstructed.
Topics: Adult; Bone Neoplasms; Ear Canal; Female; Humans; Osteoma; Pain; Temporal Bone
PubMed: 35459643
DOI: 10.1136/bcr-2021-245334 -
Journal of Veterinary Internal Medicine 2010In people, specific classifications of temporal bone fractures are associated with clinical signs and prognosis. In horses, similar classifications have not been...
BACKGROUND
In people, specific classifications of temporal bone fractures are associated with clinical signs and prognosis. In horses, similar classifications have not been evaluated and might be useful establishing prognosis or understanding pathogenesis of certain types of trauma.
HYPOTHESIS/OBJECTIVES
We hypothesized associations between temporal bone fracture location and orientation in horses detected during computed tomography (CT) and frequency of facial nerve (CN7) deficit, vestibulocochlear nerve (CN8) deficit, or temporohyoid osteoarthropathy (THO). Complex temporal region anatomy may confound fracture identification, and consequently a description of normal anatomy was included.
ANIMALS
All horses undergoing temporal region CT at our hospital between July 1998 and May 2008.
METHODS
Data were collected retrospectively, examiners were blinded, and relationships were investigated among temporal bone fractures, ipsilateral THO, ipsilateral CN7, or ipsilateral CN8 deficits by Chi-square or Fischer's exact tests. Seventy-nine horses had CT examinations of the temporal region (158 temporal bones).
RESULTS
Sixteen temporal bone fractures were detected in 14 horses. Cranial nerve deficits were seen with fractures in all parts of the temporal bone (petrosal, squamous, and temporal) and, temporal bone fractures were associated with CN7 and CN8 deficits and THO. No investigated fracture classification scheme, however, was associated with specific cranial nerve deficits.
CONCLUSIONS AND CLINICAL IMPORTANCE
Without knowledge of the regional anatomy, normal structures may be mistaken for a temporal bone fracture or vice versa. Although no fracture classification scheme was associated with the assessed clinical signs, simple descriptive terminology (location and orientation) is recommended for reporting and facilitating future comparisons.
Topics: Animals; Female; Fractures, Bone; Horse Diseases; Horses; Male; Temporal Bone; Tomography, X-Ray Computed
PubMed: 20102494
DOI: 10.1111/j.1939-1676.2009.0456.x -
The Journal of the American Osteopathic... Sep 2018
Topics: Female; Humans; Middle Aged; Ossification, Heterotopic; Temporal Bone; Tomography, X-Ray Computed
PubMed: 30335876
DOI: 10.7556/jaoa.2018.141