Cone-beam Computed Tomography in Detection of Peripheral Cystic Lesions: A Technical Report
Author(s): Yaser Safi, Hamed Mortazavi, Mahsima Tayefi Nasrabadi
This article introduces a technique to employ Cone-beam Computed Tomography (CBCT) as a beneficial modality in imaging peripheral cystic lesions. Increasing application of CBCT in maxillofacial field is a result of its performance and lower cost together with low radiation dose and its accessibility in dental clinics, however, CBCT scan is less useful in soft tissue lesions because of its limited contrast resolution. The aim of this report was to introduce a technique to employ CBCT in imaging peripheral cysts and investigating their internal structure. We present a 61-year-old woman with swelling in left upper lip associated with a nasolabial cyst. CBCT images did not provide required data on extension and periphery of the lesion. The patient was undergone aspiration of cystic contents and then injection of contrast media into the cystic cavity. Another CBCT scan was captured, and the invisible cystic shape of the lesion was visualized. CBCT cystography demonstrated the periphery, exact size and location of the nasolabial cyst. Using this technique imposed far less radiation dose and costs to patient than a usual CT scan. CBCT cystography is recommended for visualizing peripheral cysts and determining their exact size and location.