Abstract:

Objective To analyze the diagnostic ability of contrast-enhanced ultrasonography in benign lesions of the mandibular bone. Methods Patients with benign mandibular lesions confirmed by pathological examination were selected, and the location, size, boundary and internal echo characteristics, blood flow distribution, contrast-enhanced signal intensity, etc. of the lesion were observed by contrast-enhanced ultrasound(CEUS), and were compared with CBCT. Results Seven cases ofodontogenickeratocystic tumor, 6 cases of ameloblastoma, 4 cases of jaw cyst, 2 cases of ossifying fibroma, one case of odontogenicmyxoma, one case of vascular malformation and one case of Langerhans histiocytosis were pathologically confirmed. Contrast-enhanced ultrasound could display the lesions mentioned above with anechoic to hypoechoic, and contrast-enhanced results confirmed that all lesions with solid components were significantly enhanced. Compared with CBCT, CEUS relied on echo uniformity, blood flow signal and post-contrast enhancement signal to verify partial cystic solidity. Conclusion Compared with CBCT, contrast-enhanced ultrasonography can displaynot only the boundary of lesions in the jaw, but also the soft tissue content and blood flow in the lesion, and provide more diagnostic information.

Key words: contrast-enhanced ultrasound, benign lesions of the mandible, diagnosis