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1.
IntroductionSchwannomas are benign solitary neural tumours that are only exceptional located in the external auditory canal, as only a few cases have been reported in the literature.Case reportWe report a case of schwannoma of the external auditory canal in an 18-year-old man admitted for an isolated mass of the initial segment of the right external auditory canal visible to the naked eye, obstructing all of the external auditory meatus. Computed tomography of the temporal bone showed an isolated mass of the external auditory canal. Management of this patient consisted of biopsy-excision of the mass, histological examination of which confirmed a schwannoma of the external auditory canal.DiscussionAlthough rare, the possibility of a nerve tumour of the external auditory canal should always be considered. These tumours may be isolated or may occur in the context of von Recklinghausen's disease. The clinical presentation in the external auditory canal may correspond to recurrent otitis externa secondary to obstruction of the canal by the tumour, as in the case reported here. The definitive diagnosis must be based on the results of histological and immunohistochemical examination.  相似文献   

2.
Pleomorphic adenoma arising from the external auditory canal is a very rare neoplasm, and there has been no report on magnetic resonance (MR) imaging of pleomorphic adenoma of the external auditory canal. We report here a case of 65-year-old male with this tumour, measuring 12 mm in a diameter. Histopathology was confirmed from the specimen obtained at the surgical excision. MR revealed that the tumour had a well-defined margin showing hypointensity on T1-weighted images and hyperintensity on T2-weighted images relative to the parotid gland. The tumour was well enhanced by contrast material. No invasion to the surrounding tissue was observed. These MR findings were compatible with pleomorphic adenoma of the salivary gland origin. In treating pleomorphic adenoma of the external auditory canal, complete surgical excision is essential for the prevention of recurrence. It can be concluded that MR imaging is helpful for making a differential diagnosis of external auditory canal tumours and selection of adequate treatment.  相似文献   

3.
Chondroid syringoma of the external auditory canal is an extremely rare neoplasm, representing the cutaneous counterpart of pleomorphic adenoma of salivary glands. This tumour is thought to derive from the apocrine duct of the folliculo-sebaceous-apocrine unit. We report the case of a 68-year-old male in whom the clinical and radiological examinations showed a well-circumscribed tumour limited to the external auditory canal. The diagnosis was confirmed by histologic examination. We also reviewed the literature.  相似文献   

4.
Solitary schwannoma is a benign, encapsulated tumour of Schwann cell origin, therefore the olfactory and optic nerves are never affected. About 25%-45% of all schwannomas occur in the head and neck but schwannoma of the external auditory canal is a rare finding, and we have found only 6 previous cases reported in the literature world-wide. Our patient was discovered by chance during a stapedectomy because the tumour was sited in the external auditory canal without distorting it.  相似文献   

5.
Primary paraganglioma of the external auditory canal is a rare otological finding. To date, only three cases have been reported in the world-wide literature. Such a tumour is now described in a 42-year-old female. The clinical and histopathological features of the case are discussed. The role of immunocytochemistry in defining diagnosis, from a large list of differentials, is illustrated. We present the first magnetic resonance images of this rare tumour and highlight the benefit of intra-operative frozen section in limiting surgery to canal excision.  相似文献   

6.
Tubular apocrine adenoma (TAA) is a very rare sweat gland tumour. Comprehensive review of the literature reveals that TAA in the external auditory canal (EAC) has not yet been reported. We report a case of TAA in the EAC, together with characteristic histopathological findings.  相似文献   

7.
Schwannomas are uncommon tumors of the external auditory canal. In the English literature, very few cases of schwannomas originating in the external auditory canal were reported. In this report, we described a 44-year-old patient who presented with external auditory canal mass which was managed by local excision. The clinical and histologic features, the differential diagnosis, and the treatment of external auditory canal schwannoma is discussed.  相似文献   

8.
BACKGROUND: Carcinoma of the external auditory canal are tumours considered to have a poor prognosis. Improvement of the survival rate by surgical means alone is not possible. Individual therapy modalities as a result of an interdisciplinary approach between otosurgeon and radiotherapist are necessary. PATIENTS AND METHODS: A series of 30 patients (3 patients pretreated at other institutions) with carcinoma of the external auditory canal and middle ear treated between 1978 and 1997 in our institutions was analysed with particular reference to tumour size and its relation to surrounding tissues, patterns of neck node involvement, surgical procedures, and radiation techniques. Clinical endpoints were freedom from local failure, overall survival, disease-free survival. The mean follow-up was 4.7 years (range: 0.1 to 18.8 years), median 3 years. RESULTS: Treatment by surgery and radiotherapy resulted in an overall 5-year survival rate of 51%. According to Pittsburgh classification the 5-year survival rate for early disease (T1- and T2-tumours) was 89%, for stage III 67% and for stage IV 39%. Most important prognostic factors were dural infiltration (all patients with dural invasion died within 2.2 years) and the infiltration of surgical margins (the 5-year survival rate of patients with complete tumour resection was 100%, but 54% in patients with tumour beyond surgical margins). 192-iridium HDR afterloading brachytherapy based on 3D CT-treatment planning is an effective tool in the management of local recurrences following surgery and a full course of external beam radiotherapy. CONCLUSIONS: Surgical resection followed by radiotherapy adapted to the stage of disease and grade of resection is the preferred treatment of cancer of the external auditory canal and middle ear.  相似文献   

9.
PURPOSE OF REVIEW: Although uncommon, acquired external auditory canal stenosis is an entity that is encountered by many otolaryngologists. This paper reviews the causes, pathogenesis, assessment, and management options for external auditory canal stenosis. RECENT FINDINGS: Initially, acquired external auditory canal stenosis was described as resulting from a number of different causes. Since then, histology and imaging studies of this disease have shown that a common cascade of inflammatory changes resulting from these different causes is the primary pathogenesis leading to medial canal fibrosis. Once there is complete obstruction of the external auditory canal, surgery is the primary treatment. Understanding the strong role of inflammation in the pathogenesis of external auditory canal stenosis may lead to new preventative medical therapies. SUMMARY: Although acquired external auditory canal was described several years ago, its underlying pathophysiology is now better understood. From this knowledge, improved medical as well as surgical approaches can be developed.  相似文献   

10.
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.  相似文献   

11.
Ectopic meningiomas located within the external auditory canal without any intracranial connection are an extremely rare finding. A report is made of a 38-year-old woman presenting with a conductive hearing loss due to an aural polyp, which was subsequently diagnosed as a meningioma. Computer-aided tomography (CT) and magnetic resonance imaging (MRI) showed the tumour to be entirely extracranial. Complete tumour excision was achieved using a modified radical mastoidectomy approach.  相似文献   

12.
A case of myxoma of the external auditory meatus is described. The patient presented with a recurring tumour which had not been correctly diagnosed although the growth had been removed ten times over a period of two years. The tumour was skin covered, contained gelatinous material and was attached to the tympanic membrane and anterior canal wall. Following recognition of the tumour as myxoma, removal was performed with sufficiently wide margins and there has been no recurrence during follow-up for one year.  相似文献   

13.
OBJECTIVES: To determine whether the risk of external auditory canal stenosis from external-beam radiation therapy is dose dependent. STUDY DESIGN: Retrospective chart review. METHODS: The presence of external auditory canal disease was recorded for patients who received low-dose (e.g., lymphoma [20-40 Gy]), medium-dose (e.g., chemodectoma [40-55 Gy]), or high-dose (e.g., parotid and nasopharyngeal neoplasms [55-75 Gy]) external-beam radiation therapy from 6 months to over 8 years following treatment. The incidence of external auditory canal disease was compared between groups. RESULTS: None of 13 low-dose, none of 19 medium-dose, and 8 of 91 (8.7%) high-dose external-beam radiation therapy subjects developed ipsilateral external auditory canal stenosis. No external auditory canal stenosis developed in patients treated with high-dose external-beam radiation therapy in the absence of parotid surgery. External auditory canal stenosis developed only in patients treated with parotidectomy and high-dose external-beam radiation therapy (P =.0059), and all of these cases of external auditory canal stenosis developed within 3 years of radiation therapy. CONCLUSIONS: High dose external-beam radiation therapy alone does not significantly predispose patients to external auditory canal stenosis. However, combined high-dose external-beam radiation therapy and surgery around the external auditory canal do significantly increase the risk of external auditory canal stenosis.  相似文献   

14.
Adenoid cystic carcinoma is a rare variety of Ceruminoma, arising from the glandular elements of the External Auditory Canal. A case of Adenoid cystic carcinoma of the external auditory canal is reported, to recapitulate clinical features and management problems of the tumour at this site. The controversies in nomenclature, histopathology, and management are discussed.  相似文献   

15.
Tumors of external auditory canal are rare and malignant neoplasms of external auditory canal are uncommon. We report two cases of carcinoma of external auditory canal. Primary carcinomas of the external auditory canal are rare, the incidence being approximately two cases per one million per year. Incidence in females is more than males (1). The cases are usually diagnosed late because of the absence of significant presenting complaints.  相似文献   

16.
We report on a 45-year-old male patient with the signs of exophytic, obstructive and painless tumour of the right external auditory canal developed within a period of about 3 months. The tumour was completely removed in local anaesthesia and histologically found to be a leiomyosarcoma. The only possible origin of this lesion might be the smooth muscle cells of the local blood vessels or the mm. arrectores pilorum.  相似文献   

17.
目的总结外耳道阻塞性角化病的临床特点。方法对30例外耳道阻塞性角化病患者的临床资料进行回顾性分析。结果外耳道阻塞性角化病的临床主要特点有:剧烈的耳痛;嵌塞物有较硬的核心;嵌塞物呈灰白色或者污灰色;嵌塞物和耳道皮肤粘连紧密;外耳道皮肤炎症较重。结论外耳道阻塞性角化病的5个特点可以作为诊断外耳道阻塞性角化病以及与外耳道胆脂瘤区别的参考。  相似文献   

18.
目的 探讨外耳道胆脂瘤并发化脓性腮腺炎病因及诊治经验,并进行外耳道胆脂瘤诊疗相关文献复习。 方法 回顾性分析1例外耳道胆脂瘤并发化脓性腮腺炎病例资料,主要症状为左耳听力下降伴流脓,左侧面部红肿疼痛。颞骨CT及耳部核磁示:左侧外耳道内胆脂瘤形成,累及乳突、鼓室、鼓窦、腮腺及咽旁间隙。临床诊断:外耳道胆脂瘤(左,Holt Ⅲ期)、化脓性腮腺炎(左)。手术方式为左耳外耳道胆脂瘤切除术、开放式乳突根治术、鼓室成形术、人工听骨植入术、耳甲腔成形术、腮腺脓肿清除术及腮腺瘘修补术。 结果 术中彻底清除外耳道及中耳内胆脂瘤及腮腺脓肿,并修复腮腺瘘。术后随访患者恢复良好,无胆脂瘤复发残留及腮腺炎复发相关症状出现。 结论 外耳道胆脂瘤具有骨质破坏的潜能。而HoltⅢ期外耳道胆脂瘤并发化脓性腮腺炎病例罕见,明确病因并依据病变侵袭范围选择个体化的治疗方案尤为关键。  相似文献   

19.
目的探讨小耳畸形患者采用大脚内侧Thiersch皮瓣在耳廓成形并外耳道重建术中的应用。方法 总结2000年1月-2012年5月先天性小耳畸形并外耳道闭锁的患者105例(115耳)临床资料,所有患者在全麻下行耳廓成形并外耳道重建术,在重建的外耳道内采用大腿内侧Thiersch皮瓣移植,术后10-12 d局部换药,3-4周后外耳道用透明质酸和膨胀海绵填塞,3-6个月后取出填塞物。结果耳廓外形满意,外耳道皮肤上皮化良好,112耳外耳道口直径6-10 mm,外耳道口宽敞;3例患者因未定期复诊出现外耳道狭窄。结论大腿内侧Thiersch皮瓣可满足于先天性小耳畸形术后外耳道植皮需要,术后定期复查可有效预防外耳道狭窄。  相似文献   

20.
Chondroid syringoma is an uncommon, benign skin adnexal tumour. It usually presents as a slowly growing intradermal or subcutaneous nodule on the face. Treatment involves local excision with a cuff of normal tissue to prevent recurrence. A rare case of chondroid syringoma arising from the external auditory canal is reported. The clinical features, histology, treatment and follow-up are discussed.  相似文献   

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