title: Infected sialocele:  complication in masseter reduction using radiofrequency coagulation.
abstract: Radiofrequency coagulation was introduced to reduce the volume of masseter muscle. Radiofrequency procedure causes focal necrosis in masseter muscles, which leads to muscle hypoplasia and a slender lower face. We present a case of a 24-year-old woman who underwent radiofrequency coagulation to reduce masseter muscles. The patient experienced progressive erythematous swelling and noticed the mass around the right cheek 5 days after the procedure. On radiologic evaluation, a round cavity of 4-cm diameter containing air and fluid was observed. Incision and drainage was performed, and antibiotics were administrated intravenously. Blood-tinged purulent fluid was obtained, which was subsequently found to have a high amylase level. The swelling subsided, and there is no relapse up to 6 months after drainage. There are several complications of radiofrequency coagulation reported such as mucoserous fluid collections, late bleeding, infections, long-lasting pain, Stensen duct injury, facial nerve injuries, and limitation of temporomandibular joint movement. A well-designed operation plan and skilled technique are required to avoid these complications.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Ajou University Hospital, Suwon, Republic of Korea.
authors.forename: Hyoseob
authors.initials: H
authors.lastname: Lim
authors.forename: Il Jae
authors.initials: IJ
authors.lastname: Lee
authors.forename: Joo Hyoung
authors.initials: JH
authors.lastname: Kim
authors.forename: Myong Chul
authors.initials: MC
authors.lastname: Park
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D004322:Drainage; D004954:Esthetics; D005260:Female; D006801:Humans; D006984:Hypertrophy; D008406:Masseter Muscle / Q000002:abnormalities / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis* / Q000628:therapy*; D011846:Radio Waves; D056910:Republic of Korea; D012466:Salivary Gland Diseases / Q000175:diagnosis* / Q000628:therapy*; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents