A Case of Metastasizing Pleomorphic Adenoma Recurred as Cervical Lymph Node Metastasis after Parotidectomy / 대한이비인후과학회지

Metastasizing pleomorphic adenoma is a rare condition of metastasis from a histologically benign pleomorphic adenoma of the salivary glands. The bones and lungs are the most common metastatic locations for metastasizing pleomorphic adenoma, suggesting hematogenous spread of the primary tumor. However, we observed a case of metastasizing pleomorphic adenoma presenting with cervical lymph node metastasis, suggesting metastasis through the regional lymphatic system, in a 37-year-old woman who underwent parotidectomy 14 years earlier. Herein, we report this rare case and review the relevant literature.

A Case of Skull Base Plasmacytoma Presenting with Unilateral Cheek Paresthesia in Patient with Multiple Myeloma

Plasmacytoma is a monoclonal neoplastic proliferation of plasma cells derived from bone marrow. Plasmacytoma of the skull base is very rare. Recently, the authors experienced a case of a 50-year-old woman with a tumor like lesion originating from the right sphenoid bone. The patient presented with a 3-month history of right facial pain and paresthesia. She had been diagnosed and treated with multiple myeloma for more than 5 years, although she was in complete remission until recently. Imaging studies including contrast CT scan and MRI, showed a huge, enhanced and irregular shaped lesion in the sphenoid bone along with skull base destruction and intracranial invasion. The patient underwent transnasal endoscopic biopsy under local anesthesia. The pathology was consistent with a plasma cell tumor and it was confirmed as a solitary plasmacytoma of the bone of the skull base. We report this rare case along with a literature review.

Schwannoma of Ansa Cervicalis in the Submandibular Space / 대한이비인후과학회지

Although schwannomas can arise from all types of nerves except the optic and olfactory nerves, those that arise from the ansa cervicalis is extremely rare, with only four cases having been reported worldwide. Because of their rarity, ansa cervicalis schwannomas are rarely considered in patients presenting with schwannomas of the neck region. In the present case, we did not consider ansa cervicalis as the nerve of origin preoperatively, but during the surgery, found a mass originating from the ansa cervicalis by identifying a contracture of the strap muscles. We thus address the need to consider ansa cervicalis as a possible original site in the evaluation and management of schwannomas of the neck region. In addition, surgeons should focus on the intraoperative findings to determine the nerve of origin and to anticipate postoperative complications, as well as performing appropriate preoperative imaging studies.