Al-Haj Husain Adib, Schönegg Daphne, Valdec Silvio, Stadlinger Bernd, Piccirelli Marco, Winklhofer Sebastian
Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Department of Neuroradiology, Clinical Neuroscience Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland.
Imaging Sci Dent. 2023 Jun;53(2):161-168. doi: 10.5624/isd.20220215. Epub 2023 Mar 24.
Nasopalatine duct cysts (NPDCs), the most common non-odontogenic cysts of maxilla, are often incidental findings on diagnostic imaging. When symptomatic, they usually present as a painless swelling with possible fistula. Conventional radiography shows a round-to-ovoid or heart-shaped radiolucency between the roots of central maxillary incisors. While the radiographic features of NPDCs in X-ray-based modalities have been well described, their magnetic resonance imaging (MRI) features have rarely been reported. Developments in dental MRI in recent years and the introduction of various dental MRI protocols now allow a wide range of applications in dental medicine. MRI is becoming an important tool for the detection and diagnosis of incidental or non-incidental dentomaxillofacial cysts. This report presented and discussed the characteristics of 2 NPDC cases visualized on MRI using both conventional and newly implemented specific dental MRI protocols with a novel 15-channel mandibular coil, demonstrating the use of these protocols for radiation-free maxillofacial diagnoses.
鼻腭管囊肿（NPDC）是上颌骨最常见的非牙源性囊肿，常在诊断性影像学检查中偶然发现。有症状时，通常表现为无痛性肿胀，可能伴有瘘管。传统X线片显示上颌中切牙牙根之间有圆形至椭圆形或心形的透射区。虽然基于X线的检查方式中NPDC的影像学特征已有详细描述，但其磁共振成像（MRI）特征却鲜有报道。近年来牙科MRI的发展以及各种牙科MRI检查方案的引入，使得其在牙科医学中有了广泛应用。MRI正成为检测和诊断偶然或非偶然牙颌面囊肿的重要工具。本报告展示并讨论了2例使用传统及新实施的特定牙科MRI检查方案、采用新型15通道下颌线圈在MRI上显示的NPDC病例特征，证明了这些检查方案在无辐射颌面诊断中的应用。
