title: Hydatid cyst of the parotid gland.
abstract: Primary hydatid cyst of the parotid gland is extremely rare, even in the endemic areas. A 23-year-old woman presented with slowly progressive swelling in the right periauricular region. Computed tomography (CT) scan of the head and neck revealed a round, well-demarcated water-density mass in the right parotid gland. At the operation, the cystic mass replacing most of the superficial part of right parotid gland was demonstrated. Superficial parotidectomy was carried out. Histopathological examination confirmed the diagnosis of hydatid disease. CT scan is a valuable imaging method for diagnosis of parotid cystic lesions; however, other acquired and congenital cystic lesions of parotid gland may have similar appearance and should be differentiated. Where the incidence of the disease is high, hydatid cyst of parotid gland should be considered in the differential diagnosis of lesions causing swelling of the parotid area.
authors.affiliation: Department of Radiology, Rasoul Akram University Hospital, School of Medicine, Iran University of Medical Sciences, Niyayesh Street, Shahrara, Tehran, Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Darabi
authors.forename: Peyman
authors.initials: P
authors.lastname: Varedi
authors.forename: Ali Reza
authors.initials: AR
authors.lastname: Mohebi
authors.forename: Simin
authors.initials: S
authors.lastname: Mahmoodi
authors.forename: Payam
authors.initials: P
authors.lastname: Varedi
authors.forename: Seyed Ali
authors.initials: SA
authors.lastname: Nabavizadeh
authors.forename: Artemis
authors.initials: A
authors.lastname: Erfan
authors.forename: Ahmad
authors.initials: A
authors.lastname: Ostadali Makhmalbaf
authors.forename: Daryoush
authors.initials: D
authors.lastname: Saedi
authors.forename: Seyed Reza
authors.initials: SR
authors.lastname: Saadat Mostafavi
authors.forename: Seyed Mehdi
authors.initials: SM
authors.lastname: Mousavi
mesh_terms: D015766:Albendazole / Q000627:therapeutic use; D000871:Anthelmintics / Q000627:therapeutic use; D003937:Diagnosis, Differential; D004443:Echinococcosis / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D010305:Parotid Diseases / Q000175:diagnosis / Q000601:surgery*; D010306:Parotid Gland / Q000473:pathology / Q000601:surgery; D011182:Postoperative Care; D014057:Tomography, X-Ray Computed; D055815:Young Adult
chemical_list: D000871:Anthelmintics; D015766:Albendazole