Abstract
The present study aims to report an interesting case of secondary actinomycosis infection of a nasopalatine duct cyst, with a radiopaque surfur granule and calculus formation. The patient, a 30-year-old female with light-brown color skin, was referred to the oral medicine service with spontaneous pain in the region of upper central incisors. During anamnesis, an endodontic treatment in tooth 21 was found. Periapical radiographic examination revealed a radiolucent, unilocular, well-defined, heart-shaped lesion in the midline. Scanning tomographic examination revealed a radiodense round substance surrounded by a radiolucent halo. A hypothesis of nasopalatine duct cyst with a foreign body was raised. Excisional biopsy of the lesion was performed revealing the presence of a brownish, granular, calcified material within the cystic lumen. Histopathologic examination elucidated the diagnosis with histochemical characterization of the actinomycosis infection. Postoperative follow-up of 12 months was uneventful. The microscopic characterization of sulfur lithiasis is discussed.
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