Epidermoid Cyst of the Maxillary Sinus: A Case Report and Literature Review

Author:

Chau Ivy Yenwen1ORCID,Chou Jiann-Shang2,Hsueh Chih-Jen1

Affiliation:

1. Department of Otolaryngology, Cheng Hsin General Hospital, Taipei, Taiwan

2. Department of Pathology, Cheng Hsin General Hospital, Taipei, Taiwan

Abstract

Epidermoid cysts are rare benign lesions that can derive from abnormally situated ectodermal tissue during embryological development or from implanted epithelium after trauma or surgery. In the oral and maxillofacial regions, epidermoid cysts usually develop in the floor of the mouth and rarely in other sites. We describe a rare case of an epidermoid cyst arising in the right maxillary sinus. A 29-year-old man with a known diagnosis of Marfan syndrome presented with progressive swelling and tenderness in the right buccal region, mimicking facial cellulitis, and refractory to medical treatment. Computed tomography scan showed a cystic lesion extending widely into the right maxillary sinus. The cyst was successfully removed with a medial maxillectomy through inferior antrostomy approach under general anesthesia. Histological examination confirmed the diagnosis of an epidermoid cyst, showing a cystic wall lined with a thin layer of keratinizing squamous epithelium and fibroma connective tissue infiltrated with inflammatory cells, with no skin appendages. There has been no evidence of recurrence during the 4 year follow-up. We also conduct a review of the English literature for the reported cases of maxillary epidermoid cyst.

Publisher

SAGE Publications

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