Abstract
A case of metastatic sebaceous carcinoma of the parotid gland, in a 47-year-old man, is reported. The primary lesion on the left lower eyelid was removed surgically about 5 months before his first visit to our university hospital. The first medical examination revealed a small nodule (24 x 14 mm, hard touch, smooth surface, well defined, and mobile tumor) on the preauricular lesion, and a definite diagnosis of the tumor could not be made clinically. He was carefully followed up for a while, and then did not visit us for 13 months. During that period the parotid mass gradually grew to 57×43 mm in size accompanying facial paralysis. He was admitted and underwent left radical neck dissection with parotidectomy. The parotid gland was almost completely occupied by the tumorous mass, and the facial nerve trunk was also invaded. Histopathologically, metastatic sebaceous carcinoma was found in the parotid tumor, submandibular lymphnode, and profound cervical lymphnodes. After the surgery he received prophylactic radiation therapy of 50 Gy. Pathologic features of the parotid metastatic tumor consisted of lobulated masses of sebaceous carcinoma cells which had foamy cytoplasm and atypical nuclei. No recurrent tumor has been seen during the 19 months after the surgery.
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