[锥形束计算机断层扫描对颞下颌关节髁突囊肿样病变的影像学特征]

[Radiological characteristics of the cyst-like lesion of condyle in temporomandibular joint by cone beam computed tomography].

作者信息

Li Shu, Lei Jie, Fu Kai-Yuan

机构信息

Center for Temporomandibular Diseases & Orofacial Pain, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

出版信息

Hua Xi Kou Qiang Yi Xue Za Zhi. 2018 Oct 1;36(5):498-502. doi: 10.7518/hxkq.2018.05.007.

DOI:10.7518/hxkq.2018.05.007

PMID:30465342

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7041132/

Abstract

OBJECTIVE

To analyze the radiological characteristics and classifications of the cyst-like lesion of condyle in temporomandibular joint (TMJ) by cone beam computed tomography (CBCT).

METHODS

The study was conducted retrospectively on TMJ images from 194 patients who underwent CBCT examinations. Location, size, amount, surrounding bone trabecula, cortical bone white line of cyst-like lesion, and the overall condition of the condylar bone were evaluated. According to the overall condition of the condylar bone, the cyst-like lesion of condyle were divided into typesⅠand Ⅱ. The location, size, amount, surrounding bone trabecula, and cortical bone white line of the two types of cyst-like lesions were compared.

RESULTS

In 198 condylars of 194 patients, cyst-like lesions were detected in the left side of 94 patients, in the right of 96 patients, and in both sides of 4 patients. The size of lesions ranged from 1.2 mm to 13.5 mm, with an average size of (3.4±1.5) mm. Half of the cyst-like lesions were located underneath the anterior lateral cortical bony layer (99 condylars, 50.0%). Most cyst-like lesions were solitary (149 condylars, 75.3%), while 62.6% (124 condylars) were surrounded by continuous bony white lines. Bone sclerosis could be observed in 160 condylars (80.8%). A total of 132 condyles (66.7%) were accompanied by changes in late-stage osteoarthrosis, while the others were only accompanied by early-stage osteoarthrosis (10 osteoarthrosis, 5.1%) or showed no evidence of osteoarthrosis (56 osteoarthrosis, 28.3%). Statistical difference were observed in the location, amount, and surrounding bone trabecula of the two types of cyst-like lesions. TypeⅠcyst-like lesions had more frequent and bone sclerosis than type Ⅱ, whereas type Ⅱ cyst-like lesions occurred more on condylar internal or condyle neck than typeⅠ.

CONCLUSIONS

The pathogenesis and mechanism of the two types of cyst-like lesions may be different from each other.

摘要

目的

通过锥形束计算机断层扫描（CBCT）分析颞下颌关节（TMJ）髁突囊肿样病变的影像学特征及分类。

方法

回顾性研究194例行CBCT检查患者的TMJ图像。评估囊肿样病变的位置、大小、数量、周围骨小梁、皮质骨白线及髁突骨的整体情况。根据髁突骨的整体情况，将髁突囊肿样病变分为Ⅰ型和Ⅱ型。比较两型囊肿样病变的位置、大小、数量、周围骨小梁及皮质骨白线情况。

结果

194例患者的198个髁突中，左侧发现囊肿样病变94例，右侧96例，双侧4例。病变大小为1.2～13.5mm，平均大小为（3.4±1.5）mm。半数囊肿样病变位于前外侧皮质骨层下方（99个髁突，50.0%）。多数囊肿样病变为单发（149个髁突，75.3%），124个髁突（62.6%）周围有连续的骨白线。160个髁突（80.8%）可见骨质硬化。132个髁突（66.7%）伴有晚期骨关节炎改变，其余仅伴有早期骨关节炎（10个髁突，5.1%）或无骨关节炎表现（56个髁突，28.3%）。两型囊肿样病变在位置、数量及周围骨小梁方面存在统计学差异。Ⅰ型囊肿样病变比Ⅱ型更常见且骨质硬化更明显，而Ⅱ型囊肿样病变在髁突内部或髁突颈部比Ⅰ型更常见。