Bilateral myoepithelioma of the nasopharynx: A case report

A Case of Myoepithelioma of Nasal Cavity and Short Review of Literature

Introduction: Myoepithelioma is a rare neoplasm of the salivary glands and accounts for less than 1% of salivary gland neoplasms. Only 7 cases of myoepithelioma in the nasal cavity have been reported till date in literature. Case Report: A 61 year old male presented to us with epistaxis. There was a pinkish fleshy mass occupying the right nasal cavity. Biopsy showed evidence of an epithelial tumor of intermediate aggressiveness. We did an endoscopic complete excision of nasal cavity mass. Histopathological examination of the resected tumor was consistent with myoepithelioma. Due to its rarity, the nature of the tumor is not known and regular follow-ups are needed for early detection of recurrence and malignancy. There has been no evidence of tumor recurrence in the 18 months following surgery.

Myoepithelioma of the Nasal Septum

Myoepithelioma is defined as myoepithelial cells composed of tumor with solid, myxoid, and reticular growth pattern by the World Health Organization. It is a rare neoplasm that arises in the major salivary gland or minor salivary gland comprising approximately 1% of all salivary gland tumor. This neoplasm occurs in the parotid gland and soft palate mostly, which can be found in other organs. However, up to now, myoepithelioma of nasal septum has not been reported in English medical literature. Histologically, it is grouped as spindle, epitheliod, reticular, and clear cell types. Spindle cell type is the most common. In this case, a 40-year-old woman presented with complaining of nasal stuffiness and accidentally found right nasal cavity mass. Endoscopic surgery for excision of the mass was performed under local anesthesia, which was confirmed as myoepithelioma. After surgery, the patient's symptom was disappeared and there has not been sign of recurrence for 6 months. We present a rare patient of myoepithelioma of the nasal septum with review of relevant literature.

Myoepithelial carcinoma of the nasopharynx: Rare case report with clinicopathologic and immunohistochemical features review of literature

BACKGROUND

Myoepithelial carcinoma is a rare salivary carcinoma, which most often arises from the major salivary glands. Only a few cases of myoepithelial carcinoma of the nasopharynx have been reported, thus, the treatment guideline and prognosis remain undefined.

METHODS

We reported a case of nasopharyngeal myoepithelial carcinoma in a 31-year-old man. The tumor cells showed specific cell types and arrangements histologically, which were immunoreactive with myoepithelial markers. The patient received surgical excision with transpalatal approach. A literature review of previous cases was also presented.

RESULTS

The patient reflected residual tumor 4 weeks later. After concurrent chemoradiotherapy (CRT), the tumor reduced and remained stable without signs of progression.

CONCLUSION

The nasopharyngeal mass with spindled, plasmacytoid, epithelioid, and clear cell types, was suggested to raise the suspicion of myoepithelial carcinoma in order to diagnose and treat early. The wide surgical excision followed by optimal adjuvant therapy might offer a mode of treatment with better survival results.

Recurrent Myoepithelioma Treated by Palatal and Piriform Apertural Approaches

Myoepithelioma is a rare, benign salivary neoplasm, most frequently located in the salivary gland; extrasalivary cases most commonly occur in the palate. This tumor is prone to recurrence. We present a case of recurrent myoepithelioma in the nasal cavity with a palatal fistula treated both by a palatal approach and a piriform apertural approach. The combination of these approaches widens the surgical space, allowing removal of the mass. It is important not only to excise the mass but also to allow for reconstruction.

Myoepithelial Carcinoma of the Nasopharynx: Report of a Rare Case and a Review of the Literature

Salivary gland carcinomas are very rare in the nasopharynx, with the most frequent histologic types being adenoid cystic carcinoma, mucoepidermoid carcinoma and adenocarcinoma, not otherwise specified. Myoepithelial carcinoma (MECA) is a rare tumor of the salivary glands, and there are only three previously reported cases of nasopharyngeal MECA. The case presented is the fourth reported case of MECA in the nasopharynx. Due to the morphologic heterogeneity of MECA, immunohistochemistry is indispensable in ascertaining the diagnosis. MECA is a locally aggressive tumor, but the long-term prognosis of this tumor in the nasopharynx remains uncertain. In our case the tumor was unresectable and the patient was given chemo-radiotherapy. Despite this, residual tumor was seen on nasoscopy 5 months after initial diagnosis and was documented on a re-biopsy which displayed the same histomorphologic features as the original tumor.

Recurrent benign myoepithelioma of the auricle

Myoepithelioma, a generally benign tumor comprised of myoepithlial cells, is an uncommon salivary gland tumor. Myoepithelioma originates primarily in the parotid gland, but several isolated cases have been described. Although myoepithelioma has a benign nature, but there is a potential risk of malignant change and recurrence in case of incomplete resection. We acknowledge that benign myoepithelioma originating from the auricle has not been reported in the English literature. We present a rare case of 27-year-old female who had recurrent benign myoepithelioma originating from the auricle and already had been given twice operations at the other clinic.

Giant myoepithelioma of the soft palate

Myoepitheliomas are benign salivary gland tumors and account for less than 1% of all salivary gland tumors. They are usually located in the parotid gland. The soft palate is very rare affected site. The differential diagnosis of myoepitheliomas should include reactive and neoplastic lesions. The treatment of myoepitheliomas is complete removal of the tumor. Herein, we report a case with giant myoepithelioma of the soft palate, reviewing the related literature.

A case of myoepithelioma of the nasal cavity

Myoepithelioma is a rare tumor, most frequently located in the salivary gland. Case reports of extra-salivary myoepithelioma are sporadic, with only one case in the nasal cavity. A 68-year-old male patient presented with a myoepithelioma of the nasal cavity manifesting as nasal obstruction and epistaxis, which was treated successfully with endoscopic excision. Histological examination revealed myoepithelial cells and myxoid stroma, which confirmed the diagnosis of myoepithelioma. The behavioral pattern is similar to if not identical with that of the mixed tumor, pleomorphic adenoma, which is benign, but the potential for recurrence is always present, especially if complete resection is not achieved.