title: [Clinico-pathological analysis of 45 parotid gland cysts].
abstract: OBJECTIVE
  To discuss the clinical and pathological characteristics and management of parotid gland cyst.
  
  
  METHODS
  Forty-five resected samples of parotid gland tumors were selected from Shengjing Hospital of China Medical University from January 2000 to June 2014 whose postoperative pathological diagnosis were parotid gland cysts. The clinico-pathological characteristics in different types of parotid gland cysts were analyzed.
  
  
  RESULTS
  Of 45 cases of parotid gland cyst, 25 were males, 20 were females. The median age was 51 years old. 21 cases were located on the left side of parotid gland, while 24 on the right side. The main clinical symptom was painless swelling in parotid gland region. The sizes varied from 0.8 cm×0.6 cm×0.5 cm to 10 cm×2.8 cm×0.6 cm. Nine cases were accompanied with pain, and 36 without. 4 cases were seen with lymph node enlargement, and 41 without pain. The main treatment modality was simple resection of cyst without any injury of facial nerve. No recurrence was seen after following up for 1-10 years. Of the 45 postoperative histopathological results, 29 cases (64.4%) were simple cysts, 9 cases (20.0%) were polycystic disease cysts, and 7 cases (15.6%) were lymphoepithelial cysts. Besides the above-stated pathological manifestations, some non-specific microscopic changes were accompanied with parotid gland cysts, including tumor-like hyperplasia of fibrous tissue, inflammations, calcifications, synovial cyst-like changes, foreign-body giant cell reactions and granulomatous changes.
  
  
  CONCLUSIONS
  The main symptom of parotid gland cyst is progressive enlargement, and simple resection of cyst is the first-line treatment without facial nerve injury or reoccurrence. The main pathological classifications are simple cysts,lymphoepithelial cysts and polycystic disease cysts.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Shengjing Hospital of China Medical University. Shenyang 110004, China. E-mail:wangzm@sj-hospital.org.
authors.forename: Zhi-ming
authors.initials: ZM
authors.lastname: Wang
authors.affiliation: Department of Oral and Maxillofacial Surgery, Shengjing Hospital of China Medical University. Shenyang 110004, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Ye
authors.affiliation: Department of Oral and Maxillofacial Surgery, Shengjing Hospital of China Medical University. Shenyang 110004, China.
authors.forename: Dong-sheng
authors.initials: DS
authors.lastname: Yang
authors.affiliation: Department of Pathology, Shengjing Hospital of China Medical University. Shenyang 110004, Liaoning Province, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Department of Oral and Maxillofacial Surgery, Shengjing Hospital of China Medical University. Shenyang 110004, China.
authors.forename: Qiao-dan
authors.initials: QD
authors.lastname: Guan
mesh_terms: D002681:China; D003560:Cysts / Q000175:diagnosis* / Q000473:pathology; D005154:Facial Nerve; D020220:Facial Nerve Injuries; D005260:Female; D006801:Humans; D006965:Hyperplasia; D006984:Hypertrophy; D008206:Lymphatic Diseases; D008297:Male; D009364:Neoplasm Recurrence, Local; D010306:Parotid Gland / Q000473:pathology*; D010307:Parotid Neoplasms; D011184:Postoperative Period