PDF(Pubmed)
Abstract：
The \"puffed cheek\" technique is routinely performed during CT neck studies in patients with suspected oral cavity cancers. The insufflation of air within the oral vestibule helps in the detection of small buccal mucosal lesions, with better delineation of lesion origin, depth, and extent of spread. The pitfalls associated with this technique are often underrecognized and poorly understood. They can mimic actual lesions, forfeiting the technique\'s primary purpose. This review provides an overview of the puffed cheek technique and its associated pitfalls. These pitfalls include pneumoparotid, soft palate elevation that resembles a nasopharyngeal mass, various tongue displacements or distortions that obscure tongue lesions or mimic them, sublingual gland herniation, an apparent exacerbation of the airway edema, vocal cord adduction that hinders glottic evaluation, and false indications of osteochondronecrosis in laryngeal cartilage. Most stem from a common underlying mechanism of unintentional Valsalva maneuver engaged in by the patient while trying to perform a puffed cheek, creating a closed air column under positive pressure with resultant surrounding soft-tissue displacement. These pitfalls can thus be avoided by instructing the patient to maintain continuous nasal breathing while puffing out their cheek during image acquisition, preventing the formation of the closed air column. Keywords: CT, Head/Neck © RSNA, 2024.
摘要：
在疑似口腔癌患者的CT颈部研究中，常规进行“膨化脸颊”技术。口腔前庭内的空气吹入有助于检测小的颊粘膜病变，通过更好地描绘病变起源，深度,和传播的程度。与这种技术相关的陷阱通常被认识不足和了解甚少。它们可以模仿实际的病变，丧失技术的主要目的。这篇综述概述了膨化脸颊技术及其相关缺陷。这些陷阱包括肺气颈动脉,类似鼻咽肿块的软腭抬高，各种舌头位移或扭曲掩盖舌头病变或模仿它们，舌下腺疝,气道水肿明显加重,阻碍声门评估的声带内收，和喉软骨中骨软骨坏死的假指征。大多数源于患者在尝试进行膨化脸颊时无意进行Valsalva动作的常见潜在机制，在正压下形成封闭的气柱，从而导致周围的软组织移位。因此，可以通过指示患者在图像采集期间保持连续的鼻呼吸同时膨出脸颊来避免这些陷阱。防止封闭空气柱的形成。关键词:CT,头/颈©RSNA，2024.
