title: [A clinicopathological study of 14 cases of oral granular cell tumor].
abstract: OBJECTIVE
  To describe clinical and histological features of oral granular cell tumor (OGCT)and discuss their proliferative activity.
  
  
  METHODS
  Clinical and microscopic features were assessed in 14 cases of OGCT collected from the department of oral pathology, college of stomatology of Wuhan University between 1970 and 2003. Immunohistochemical analysis was carried out using antibodies to S-100, NSE and Ki-67 and follow-up was obtained in all cases.
  
  
  RESULTS
  Tongue was the most commonly affected location (13/14). The average age was 32.6 years (range 11 to 50). OGCT occurred more commonly in females (2.5:1). Histologically, the lesions consisted of polygonal cells with abundant, granular cytoplasm. Eleven cases had typical histological features, while 3 specimens were atypical. Growth patterns were expansive in 3/14 and invasive in 11/14, including 3 atypical cases. Immunohistochemical analysis disclosed that 100% of granular cells demonstrated moderated/strong staining for S-100 protein, neuron specific enolase (NSE). Nuclear immunostaining for Ki-67 was observed only in isolated granular cells. Seven patients with benign and two patients with atypical granular cell tumor had no recurrence and metastases. One patient with atypical granular cell tumor had local recurrence after 9 years and died of the disease 10 months later.
  
  
  CONCLUSIONS
  OGCT cells display low proliferation activity. Most OGCTs are benign but few have malignant potential and periodic follow-up is mandatory to detect malignant transformation.
authors.affiliation: Department of Oral Pathology, School of Stomatology, Wuhan University, Wuhan 430079, China.
authors.forename: Jing-ling
authors.initials: JL
authors.lastname: Xue
authors.forename: Ming-wen
authors.initials: MW
authors.lastname: Fan
authors.forename: Shuo-zhi
authors.initials: SZ
authors.lastname: Wang
authors.forename: Xin-ming
authors.initials: XM
authors.lastname: Chen
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D016586:Granular Cell Tumor / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000378:metabolism / Q000473:pathology*; D055815:Young Adult
chemical_list: D019394:Ki-67 Antigen