A Case of Neurilemmoma of the Larynx Excised via Trans-Cricothyroid Membrane Approach without Tracheostomy / 대한이비인후과학회지

Neurilemmoma of the head and neck is not rare in parapharynx, but rare in the larynx. The treatment of choice in neurilemmoma of the larynx is a complete surgical resection. A small size lesion can be removed via an endoscopic approach. For a large size lesion, an external approach, such as the median or lateral thyrotomy, or pharyngotomy, can be more useful. These surgical methods often require preliminary tracheostomy to secure the airway. Through a case of neurilemmoma of the larynx, we present this disease and the treatment course of a patient, who has been successfully treated by surgical excision via trans-cricothyroid membrane approach without tracheostomy. Furthermore, we discuss its symptoms, physical examinations, microscopic features and other options of treatment for laryngeal schwannoma through literature reviews.

A Case of Mucinous Cystadenoma Mimicking Mucoepidermoid Carcinoma in Parotid Gland / 대한이비인후과학회지

Cystadenoma rarely arises in the parotid gland. It grows slowly without pain. Histopathologically, it is subdivided into papillary cystadenoma and mucinous cystadenoma. Mucinous cystadenoma arising from the salivary gland is a very rare benign tumor. A 25-year-old female patient visited our hospital with a left infra-auricular mass. Computed tomography scan showed a 3.1x2.3 cm size heterogeneous lesion with an irregular margin in the left parotid gland. Sono guided gun biopsy was performed to reveal fibrous tissue with atypical epithelial cell with mucin. Suspecting mucoepidermoid carcinoma, partial parotidectomy was performed for treatment and diagnosis. Histopathologic exam revealed mucinous cystadenoma. Cystadenoma of salivary gland has no distinct clinical feature, and is difficult to differentiate clinically from other salivary gland tumors as well as its malignancy. Thus, the possibility of malignancy must be considered for differential diagnosis.