Diagnostic ultrasound has become a radiology subspecialty. Ultrasonography(USG) is a procedure in which highenergy sound waves are bounced off internal tissues or organs and make echoes, which are picked up by the transducer and converted into an electrical signal and then into a real-time black, white and grey visual echo picture, which is displayed on a computer screen. The principles, various indications, advantages, disadvantages and advanced applications of ultrasonography in relation to maxillofacial region are enlightened in this review article.

Lipoma is the benign tumor of adipose tissue. It constitutes about 1 to 2% of all benign neoplasms of the oral cavity. Intraorally, it occurs predominantly in the buccal mucosa followed by tongue, floor of the mouth, buccal vestibule and rarely in the palate and gingiva. An 80-year-old male reported with a swelling in the right buccal mucosa for the past two years. Clinically the swelling was light yellow in color and had a broad peduncle. The swelling was soft in consistency and mobile. A provisional diagnosis of a lipoma was made. The tumor was excised and confirmed by histopathological examination.