1/33. Fibro-osseous lesions of the external auditory canal.OBJECTIVES: To differentiate a novel type of benign circumscribed bone lesion of the external auditory canal from those described previously, such as exostoses and osteomas. STUDY DESIGN: Information was obtained from computed tomography (CT) images, surgical findings, and pathologic study. methods: Five patients (26 to 82 years old) who presented a hard, round, unilateral, skin-covered mass occluding the external auditory canal to varying degrees were studied. A CT study carried out before resection of the lesions by curettage disclosed the absence of a bony connection to the underlying structures. All the tissue specimens underwent pathologic study. RESULTS: CT and surgical findings demonstrated the absence of a connective pedicle. The pathologic findings showed lesions consisting of an osteoma-like bone formation with sparse osteoblastic areas; mature lamellar bone was observed in three cases, bone marrow containing adipose tissue and hematopoietic remnants in two, and a dense, collagenous stroma in another. They all showed irregular trabeculae, bordered by osteoid osteoblasts. In no case was there evidence of a relationship to the cartilaginous tissue or to the bony structures of the external auditory canal. CONCLUSIONS: The data obtained from the clinical, CT, surgical, and pathologic findings suggest the existence of a lesion unlike those previously known, possibly related to ossifying reactions in other parts of the organism.- - - - - - - - - - ranking = 1keywords = canal (Clic here for more details about this article) |
2/33. osteoma of the middle ear.Osteomas are benign pedunculated tumours of the lamellar bone, which commonly originates from paranasal sinuses. Within the temporal bone they are seen commonly in the external ear canal. Osteomas originating from the middle ear are very rare. There are only 12 cases reported in the medical literature up to now. Five of those cases caused conductive hearing loss and the others were asymptomatic and diagnosed incidentally.- - - - - - - - - - ranking = 0.14285714285714keywords = canal (Clic here for more details about this article) |
3/33. osteoma of the internal auditory canal.OBJECTIVE: To review presenting symptoms and illustrate management options for this uncommon lesion. DESIGN: Case series and literature review. SETTING: Tertiary referral center. patients: Three cases of osteoma of the internal auditory canal are presented. Additional cases from the literature, diagnosed by radiographic appearance or gross description, are included for comparison. MAIN OUTCOME MEASURE: Response of clinical symptoms. RESULTS: Presenting symptoms are highly variable. Available reports do not adequately define the natural history of the lesion. CONCLUSION: The lack of a consistent presentation despite a similar radiographic appearance suggests that the osteoma is often an incidental finding.- - - - - - - - - - ranking = 0.71428571428571keywords = canal (Clic here for more details about this article) |
4/33. Primary bone tumors of the femur presenting with spinal symptoms: a report of two cases and review of the literature.Two case reports of femoral bone lesions simulating lumbar spinal disease are presented. physical examination and case history were strongly suggestive of lumbar spinal pathology. In case 1, surgical resection of a venous hemangioma in the lumbar epidural space was performed but did not relieve pain. In case 2, conservative treatments for a protruded disk were performed for 3 months before an accurate diagnosis was made. After correct diagnoses were made, excision of the femoral tumors brought rapid relief of all abnormal findings in both cases. Compared with other causes of sciatica, femoral bone tumors are rare. However, careful attention should be paid to rule out these lesions if the diagnosis of a lumbar spinal disease is uncertain. Bone scintigraphy seems to be a sensitive diagnostic method to detect extraspinal osseous lesions.- - - - - - - - - - ranking = 0.0036827878288137keywords = spinal (Clic here for more details about this article) |
5/33. Osteomas of the internal auditory canal: a report of two cases.OBJECTIVES: To determine the optimal medical or surgical treatment of osteomas of the internal auditory canal (IAC) as well as their growth characteristics. STUDY DESIGN: Information was obtained from case histories, images from computed tomography and magnetic resonance imaging, surgical and pathologic findings, and long-term clinical results. methods: Two patients, along with 10 additional patients reported in the literature, with osteomas of the IAC with varying symptoms were studied. Clinical history, audiometric and vestibular test results, and radiographic studies were reviewed on all patients. Histopathologic examination of the surgical specimens confirmed the presence of osteomas. The clinical outcomes were studied to determine if the preoperative symptoms had resolved. RESULTS: Eight of 12 patients underwent surgical removal of their IAC osteomas. Three of eight patients had total resolution of all symptoms. Three patients had improvement of their sensorineural hearing loss. Five patients had resolution of their dizziness. Four patients noted resolution of their tinnitus. In the absence of auditory symptoms, vestibular symptoms may be controlled with medical therapy. Long term follow-up of the two patients discussed showed little or no growth over a 4- to 5-year period. CONCLUSIONS: Surgical intervention may be warranted to remove an osteoma of the IAC if symptoms are present. patients should be made aware that symptoms may or may not improve. Continuation of symptoms may be a result of chronic compression of the auditory and vestibular nerves.- - - - - - - - - - ranking = 0.71428571428571keywords = canal (Clic here for more details about this article) |
6/33. osteoma of the internal auditory canal.Osteomas of the internal auditory canal, inaccesible to clinical examination, are rare lesions. There are only 14 cases of osteomas and exostoses of the internal auditory canal reported in the international medical literature. A patient with an osteoma of the internal auditory canal is presented, along with differential diagnosis and possible etiologic factors for the lesion. The auditory brainsteam evoked response testing showed increased absolute latencies of 1 wave and discrepancy of the wave morphology due to bony compression of the eight nerve in the internal auditory canal. Computed tomography showed a bony growth in the internal auditory canal. Magnetic response showed no abnormalities. No surgery was performed since the symptoms improved by conservative therapy.- - - - - - - - - - ranking = 1.2857142857143keywords = canal (Clic here for more details about this article) |
7/33. osteoma of the internal auditory canal presenting with sudden unilateral hearing loss.A case of an unilateral sensorineural hearing loss of sudden onset, due to an osteoma in the internal auditory canal is presented. As far as the authors are aware an osteoma at this site associated with a hearing loss occurring within a few hours has not previously been reported.- - - - - - - - - - ranking = 0.71428571428571keywords = canal (Clic here for more details about this article) |
8/33. Fibro-osseous lesion of the external auditory canal: a case report.The aim of this study was to differentiate a novel type of benign circumscribed bone lesion of the external auditory canal from lesions described previously, such as exostoses and osteomas. We present a 43-year-old male patient who suffered from ear discharge of the right ear. Local findings showed bloody discharge from his right auditory canal, which was occupied by a mass-like tissue. Computerized tomography (CT) carried out before resection of the lesion disclosed the absence of a bony connection to the underlying structures. The pathologic findings showed lesions consisting of an osteoma-like bone formation with sparse osteoblastic areas. Mature lamellar bone and bone marrow containing adipose tissue were also noted. There was no evidence of a relationship to the cartilaginous tissue or bony structures of the external auditory canal. Therefore, we present this rare case and review the reported literature in which clinical, CT, surgical, and pathologic findings suggest that this lesion was unlike those previously known, and may be related to ossifying reactions in other parts of the organism.- - - - - - - - - - ranking = 1keywords = canal (Clic here for more details about this article) |
9/33. A case of osteoma with cholesteatoma in the external auditory canal.osteoma in the external auditory canal (EAC) is an uncommon benign lesion, which presents as a solitary, unilateral, and slow-growing pedunculated mass in the outer half of the bony canal. It is usually asymptomatic; but symptoms can arise if a canal obstruction occurs. External canal cholesteatoma is also a rare lesion of the external auditory canal. cholesteatoma of the external auditory canal may arise via several mechanisms. However, an occlusion or narrowing of the external auditory canal is the basic pathogenesis. The association of an osteoma with a cholesteatoma is extremely rare, and there have been very few reports published. We encountered a rare case of a 49-year-old man with an osteoid osteoma that was complicated by a cholesteatoma in the external auditory canal. The canal wall down mastoidectomy and tympanoplasty successfully removed the osteoma and the cholesteatoma, and no recurrence or complications had occurred in the first 6 months postoperatively.- - - - - - - - - - ranking = 1.8571428571429keywords = canal (Clic here for more details about this article) |
10/33. osteoma of the lateral semicircular canal.Osteomas are benign, slow growing tumors of bone that occur almost exclusively in the craniofacial region. They are uncommon in the temporal bone. Surgical excision is indicated in symptomatic cases. An osteoma arising from the lateral semicircular canal growing into the mastoid cavity is extremely rare and usually discovered on routine radiography. We present a case of osteoma arising from the lateral semicircular canal growing into the mastoid cavity, followed by a discussion of the etiology, presentation, and management of osteomas.- - - - - - - - - - ranking = 0.85714285714286keywords = canal (Clic here for more details about this article) |
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