Oral fo cal mucinosis(OFM) is a tumor-Iike mass which is considered to be the oral counterpart of cutaneous focal mucinos is 01' a cutaneous myxoid cyst. Although all OFM havebeen reported to appear in the oral soft tissues, we describe a case of OFM with alveo lar bone involvement and review of thc prcvious reports. Histology revealed a localized area of myxomatous connective tissue surrounded by dense fibrous tlssue 8tromal mucins (alcian blue pH 2.5) and met achromasia( toluidine bl Lle pH 3) were obserγed in the tissue sectlOns Neither periodic acid-8chiff reaction nor retic Ll lin fiber nor 8-100 protein was observed. It is unclear whether the primary soft tissue lesion exte11ded into the cent1'al le Si011 or primari ly the lesion arose in the alveolar b011e 01' periodontal ligament.