2017 Volume 63 Issue 5 Pages 242-246
Oral focal mucinosis (OFM) is an oral disease analogous to cutaneous focal mucinosis that develops in the skin and is an extremely rare disease. We report a case of OFM that developed in the mandibular gingiva. The patient was a 75-year-old man who presented with a gingival mass in the region of the mandibular anterior teeth. The mass was an elastic firm, pedunculated mass measuring 30 × 25 mm, and the surface was covered with normal mucosa. Contrast-enhanced computed tomography showed a hypointense image with a homogenous internal consistency, which was not accompanied by a contrast effect. Tissue biopsy was performed twice and did not lead to a definitive diagnosis. Therefore, an excisional biopsy was performed with the patient under local anesthesia, and a histopathological diagnosis of OFM was obtained from the resected specimen. Relapse has not been occurred as of 37 months after resection.