鼻腔放線菌症例

抄録

We report a case of actinomycosis of the nasal cavity. A 45-year-old woman seen for bloody nasal discharge but no oral trauma or tooth extraction history was found in plain computed tomography (CT) to have a left nasal cavity mass destroying the uncinate process and ethmoid cells. Histopathological examination of the specimen following endoscopic nasal surgery yielded a diagnosis of actinomycosis.
Nasal cavity or paranasal sinus actinomycosis is very rare, with only 11 isolated cases reported in Japan. Clinically, nasal or paranasal actinomycosis in the 12 cases we analyzed were (1) all unilateral, (2) showed bony wall destruction on CT in 6 cases (54.5%) and focal calcification in 8 (72.7%), and (3) required surgical treatment and experienced no recurrence.