Sequelae of a Rare Case of Penetrating Parotid Gland Injury: Ultrasound and Magnetic Resonance Imaging Features

Parotid gland trauma is a rare condition due to the anatomical location of the parotid gland. Imaging of the parotid gland trauma is restricted to ultrasound (US), sialogram, and computed tomography scans in the published literature. We present a case of penetrating parotid gland injury caused by a fishhook. The foreign object was removed under local anesthesia and the patient was managed conservatively with antibiotics and tetanus toxoid vaccine. A swelling appeared in the left parotid region after two weeks that was diagnosed using US and magnetic resonance imaging as granulation tissue formation in the injured parotid gland.