Primary external auditory canal meningioma: Case report and review of the literature

Meningiomas are tumors that arise from arachnoid cells attached to both the pia mater and the inner portion of the arachnoid. They are common intracranial tumors, representing 12-25% of intracranial neoplasms. Intracranial meningiomas can spread extracranially to involve surrounding structures, including the ear and temporal bone. Ectopic meningiomas, described as primary meningiomas with no intracranial involvement, are rare. We describe a case of a primary external auditory canal meningioma with no evidence of intracranial involvement. We present pre-operative imaging findings proving no intracranial involvement prior to surgical intervention. A literature review of this uncommon clinical entity is presented and a discussion regarding its prognosis and treatment is reviewed.     

The chondroid syringoma: report of a case arising from the external auditory canal

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.     

Primary pleomorphic adenoma of the external ear canal. Report of a case and literature review

INTRODUCTION: Primary neoplasms of the external ear canal are rare, and 5% of these tumors are of glandular origin. Ceruminal glands are modified sweat glands of the skin of the external auditory meatus that may give rise to (a) benign tumors such as ceruminous adenoma, pleomorphic adenoma, and syringocystadenoma papilliferum, and (b) malignant tumors such as ceruminous adenocarcinoma, adenoid cystic carcinoma, and mucoepidermoid carcinoma. An alternative theory holds that pleomorphic adenomas may well arise from ectopic salivary tissue present in the external ear canal. These tumors are very rare and usually have a benign course. In this report, we describe an unusual case of pleomorphic adenoma of the external auditory canal associated with chronic infection of the middle ear. CASE REPORT: A 60-year-old woman presented with exacerbation of left otalgia over a 6-month period. She had been affected with chronic otitis media and aural polyps for the last 13 years, for which she had received medical treatment only. A canal-filling aural polyp was noted on clinical examination. Subsequent biopsy and histologic examination revealed pleomorphic adenoma of the external ear canal, possibly with malignant elements. Magnetic resonance imaging showed no intracranial extension or any association with the adjacent parotid gland. The patient underwent modified radical mastoidectomy and complete resection of the tumor and the entire skin of the external auditory canal. Final histology and immunohistochemistry confirmed the absence of malignancy, and no recurrence has been reported 1 year postoperatively. CONCLUSIONS: Pleomorphic adenoma is an extremely rare tumor arising from the ceruminal glands of the external ear canal. Nonspecific presentation and difficult histologic diagnosis characterize this benign neoplasm. Wide local excision is the mainstay of treatment.     

Hidradenomata of the external auditory meatus. (Review of the literature and report of a pleomorphic adenoma).

A case of hidradenoma of the external auditory meatus ('ceruminoma') is presented, with a review of the literature. The tumour has the appearances of a pleomorphic adenoma and is devoid of a capsule. It is suggested that the term hidradenoma be used for tumours of the ceruminous glands and that they be classified histologically as (1) adenoma, (2) pleomorphic adenoma, (3) adenoid cystic carcinoma and (4) adenocarcinoma. This classification aids treatment and prognosis. Attention is drawn to the high incidence of malignancy in hidradenomata of the external auditory meatus. The treatment of choice for pleomorphic adenomata is wide surgical excision with an adequate margin of normal skin. If there is doubt regarding complete removal, or a recurrence develops, a wider surgical excision is necessitated.     

Magnetic resonance imaging of pleomorphic adenoma arising from the external auditory canal

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.     

Ceruminous adenoma in the osseous external auditory canal (a case report)

We report a 55-year-old male with cerminous adenoma originating in the osseous part of the right external auditory canal, and describe the clinical features and surgical treatment.     

Pleomorphic adenoma of the external auditory canal

Pleomorphic adenoma of the external auditory canal is a rare disease. It is considered to derive from the ceruminous glands. The objective of this study is to familiarize the clinician with the clinical presentation and treatment of this disease. We report the case of a 58-year-old woman. Complete resection should be applied for cases in which magnetic resonanace imaging (MRI) and computerize tomography (CT) examination indicate no erosion in the bone and cartilage tissue. The patient should be seen regularly for recurrence.     

原发多中心性腮腺多形性腺瘤1例并文献复习

<正>多形性腺瘤(pleomorphic adenoma,PA)又称混合瘤(mixed tumor,MT),是腮腺最常见的良性肿瘤,约占腮腺肿瘤的60%~70%,而同侧腮腺原发多中心多形性腺瘤极为罕见。查阅大量国内外文献,鲜有关于此病的详细描述[1-3]。我科于2012年12月4日诊断1例右侧腮腺原发多中心性多形性腺瘤,现结合既往相关文献报道,对其病因、临床特点、诊断及治疗方法进行讨论,报告如下。     

Spontaneous external auditory canal cholesteatoma complicated by rheumatoid arthritis--case report and review of the literature

A 63-year-old woman with rheumatoid arthritis sought medical assistance for dull and chronic pain in her left ear two and half years after her initial diagnostic examination. Otoscopic examination revealed that the posteroinferior wall of the bony external ear canal was eroded and that the small cavity was filled with squamous debris. The condition was diagnosed as external auditory canal cholesteatoma (EACC). The existence of EACC might suggest complications of bone disease, aging cerumen gland, or a low migratory rate of the epithelium.     

内听道海绵状血管瘤(附1例报告并文献复习)

目的：探讨内听道海绵状血管瘤的诊断和治疗方法。方法：分析1例术后病理确诊为内听道海绵状血管瘤患者的临床表现、听力学、影像学及病理诊断等临床资料，并经扩大迷路进路行肿瘤切除术。结果：术后恢复良好，无面瘫、脑脊液漏等并发症发生，术后病理确诊为内听道海绵状血管瘤。结论：原发于内听道的海绵状血管瘤是一种极为罕见的内听道良性占位性血管性病变，和内听道其他常见的肿瘤如听神经瘤、面神经瘤等在临床表现、听力学及影像学上有许多相似之处，但也有其自身特点，确诊有赖于术后病理检查，结合临床表现和影像学（CT、MRI）特点，可为早期发现、选择合适的治疗方法提供信息。早期手术，其全切率及面、听神经功能的保存率较高。     

Ceruminous gland adenoma of the external auditory canal: a case report

Ceruminous adenoma (ceruminoma) of the external auditory meatus is a rare neoplasm with benign clinical behavior. This tumor is mainly composed of the ceruminous gland cells (modified apocrine sweat glands). These glands are localized deep in the skin mostly in the cartilaginous part of the external auditory meatus. The most often symptom of the ceruminous adenoma of external auditory meatus is the unilateral conductive hearing loss. Occasionally symptoms of this tumor (pain, otorrhoea) can result from an otitis externa secondary to meatus obstruction. Ceruminous adenoma should be radical excised with adequate margins of the normal tissues. The prognosis of these tumors is good. The difficulties of nomenclature, histological structure of the auditory external meatus ceruminoma, as well as symptomatology, treatment and clinical behavior are discussed on the basis of the literature. A case of histologically confirmed ceruminoma (ceruminous adenoma) of the external auditory meatus in a surgically treated 53 years old men is presented.     

Nasopharyngeal pleomorphic adenoma presenting as otitis media with effusion: Case report and literature review

Most tumors arising in the nasopharynx are malignant and frequently develop otitis media with effusion (OME). On the contrary, benign nasopharyngeal tumors are very rare, and pleomorphic adenoma, which is a benign mixed tumor of the nasopharynx, is also rarely encountered. We herein report a case of nasopharyngeal pleomorphic adenoma which initially presented as OME. This tumor completely blocked the orifice of the Eustachian tube but was removed by a combination of transnasal and transoral endoscopic resection. A defect in the mucous membrane was covered with polyglycolic acid sheet and fibrin glue. Mucous membrane completely covered the exposed tubal cartilage without adhesion near the tubal orifice. OME and hearing loss completely subsided 3 months after the surgery. She was disease-free 2 years after the surgery. Use of polyglycolic acid sheet could be a feasible mesh for closure of surgical defect without scarring, and it also led to healing of OME.     

Nodular fasciitis of the external auditory canal: Clinical case report and review of the literature

Nodular fasciitis is a benign reactive soft tissue tumor arising from fibroblasts and myofibroblasts. Its incidence is low and misdiagnosis is frequent especially for malignant lesions. This can lead to inappropriate and unnecessary invasive treatment. Nodular fasciitis of the external auditory canal is extremely rare. So far, around fifteen cases have been reported. We present here the case of a 90-year-old patient with nodular fasciitis of the right external auditory canal. The lesion extends ...     

Pleomorphic adenoma of the external auditory canal in Japan, with a case report.

A rare case of a 51-year-old female with a pleomorphic adenoma, measuring 0.9 x 0.7 x 0.6 (cm3), originating from the right external auditory canal (EAC), was reported. The authors discussed the 7 reported cases of EAC pleomorphic adenoma in Japan, comparing them with pleomorphic adenomas occurring in the nasal cavity and the parotid gland. It is currently too early to conclude that pleomorphic adenoma in the EAC does not tend to recur or shows a marked tendency toward canceration. The best possible treatment for EAC pleomorphic adenoma at present seems to be, as in cases of tumors in other sites, surgical resection together with removal of a sufficient range of surrounding normal tissue, followed by careful long-term postoperative observation of the clinical course.     

Duplicated internal auditory canal with inner ear malformation: Case report and literature review

Internal auditory canal anomalies are rare. Narrow internal auditory canal is believed to occur as a result of aplasia or hypoplasia of the vestibulocochlear nerve. Narrow duplication of the internal auditory canal is considered to be very rare. Narrow duplication of the internal auditory canal with inner ear malformation has been reported in only 3 cases. We present 2 cases of narrow duplication of the internal auditory canal with inner ear malformation. The first case had inner ear malformation on only one side and the second case had inner ear malformation on both sides. The embryogenesis may be different between internal auditory canal and inner ear.     

外耳道胆脂瘤并发化脓性腮腺炎1例并文献复习

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。     

Ceruminous adenoma mimicking furunculosis in the external auditory canal

Tumors arising from the ceruminous glands are very rare. Herein, we report a case of ceruminous adenoma mimicking furunculosis in the external auditory canal (EAC), along with a discussion of the various pathological types and a review of their management.