Clinicopathological and immunohistochemical analysis of twenty-five head and neck osteosarcomas.
The aim of this study was to analyze the clinicopathological features and immunohistochemical expression of p53, MDM2, CDK4, PCNA and Ki67 proteins in 25 head and neck osteosarcomas registered in a single institution. The mean age of the patients was 29 years and the most common site was the mandible (60%). The predominant histological type was the chondroblastic (72%) and 52% of the cases were classified as intermediate-grade of malignancy. The immunohistochemical analysis displayed positivity in 52% of the cases for p53, 24% for MDM2, 84% for CDK4, 92% for PCNA and 88% for Ki-67. The majority of cases were treated with surgery alone or associated with chemotherapy. Five patients developed local recurrences, four had distant metastasis and six had persistent disease after initial treatment. The overall 5-year and 10-year survival rates were 59% and 49%, respectively, and the most important prognostic factors were prior history of radiation exposure and osteoblastic histological type.
Junior
Ademar Takahama
AT
Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901 Areião, Piracicaba 13414900, Brazil.
de Abreu Alves
Fábio
F
Pinto
Clóvis Antonio Lopes
CA
Carvalho
André Lopes
AL
Kowalski
Luiz Paulo
LP
Lopes
Márcio Ajudarte
MA
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D051358:Cyclin-Dependent Kinase 4; D018844:Cyclin-Dependent Kinases / Q000378:metabolism; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007573:Jaw Neoplasms / Q000378:metabolism* / Q000473:pathology*; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D008339:Mandibular Neoplasms / Q000378:metabolism / Q000473:pathology; D008441:Maxillary Neoplasms / Q000378:metabolism / Q000473:pathology; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000378:metabolism*; D009687:Nuclear Proteins; D012516:Osteosarcoma / Q000378:metabolism* / Q000473:pathology*; D011379:Prognosis; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D011518:Proto-Oncogene Proteins / Q000378:metabolism; D051736:Proto-Oncogene Proteins c-mdm2; D015996:Survival Rate; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism
D019394:Ki-67 Antigen; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D018809:Proliferating Cell Nuclear Antigen; D011518:Proto-Oncogene Proteins; D016159:Tumor Suppressor Protein p53; C497206:MDM2 protein, human; D051736:Proto-Oncogene Proteins c-mdm2; C495900:CDK4 protein, human; D051358:Cyclin-Dependent Kinase 4; D018844:Cyclin-Dependent Kinases