Document Detail

Mandibular bone invasion by gingival carcinoma on dental CT images as an indicator of cervical lymph node metastasis.
MedLine Citation:
PMID:  12424630     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To evaluate the significance of mandibular bone invasion by gingival carcinoma revealed by reformatted dental CT images as a prognostic indicator of cervical metastasis. METHODS: Thirty-two patients with squamous cell carcinoma of the lower gingiva were examined by dental CT. Cervical metastases and survival rates of these patients were analysed in relation to their clinical characteristics, histologic grading based on gingival biopsy, and mandibular bone invasion using reformatted dental CT imaging diagnoses prior to surgery. The dental CT images were classified into four types: Class I, no bone invasion; Class II, invasion confined to the alveolus; Class III, invasion extending between the alveolus and the mandibular canal; and Class IV, invasion beyond the mandibular canal. RESULTS: Logistic multivariate regression analysis showed that bony invasion identified on dental CT images was a significant prognostic factor in cervical metastases (P=0.028). The 5-year overall survival rates of Classes I, II, III, and IV were 100% (n=9), 76.2% (n=9), 71.4% (n=7), and 28.6% (n=7), respectively. CONCLUSIONS: The evaluation of mandibular bone invasion using dental CT images is useful as a prognostic indicator of cervical metastasis for patients with gingival carcinoma.
I Ogura; T Kurabayashi; T Amagasa; N Okada; T Sasaki
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Dento maxillo facial radiology     Volume:  31     ISSN:  0250-832X     ISO Abbreviation:  Dentomaxillofac Radiol     Publication Date:  2002 Nov 
Date Detail:
Created Date:  2002-11-08     Completed Date:  2003-04-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7609576     Medline TA:  Dentomaxillofac Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  339-43     Citation Subset:  D    
Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Japan.
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MeSH Terms
Aged, 80 and over
Alveolar Process / radiography
Carcinoma, Squamous Cell / radiography*,  secondary,  surgery
Confidence Intervals
Follow-Up Studies
Gingival Neoplasms / radiography*,  surgery
Image Processing, Computer-Assisted
Logistic Models
Lymphatic Metastasis / radiography*
Mandible / radiography,  surgery
Mandibular Neoplasms / classification,  radiography*
Middle Aged
Multivariate Analysis
Neck Dissection
Neoplasm Invasiveness
Odds Ratio
Survival Rate
Tomography, X-Ray Computed*

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