Muhammad Junaid, Muhammad Aslam Khan, Muhammad Umair, Asad Nabi, Anjum Khawar.
Involvement of oral cavity subsites and etiological factors for oral cavity carcinoma in a tertiary care hospital.
J Med Sci Jan ;27(4):273-6.

Objectives: To determine the frequency of carcinoma of various oral cavity sub sites along with risk factors like smoking.Material and Methods: Six months Descriptive retrospective study was conducted at Pakistan Institute of Medical Sciences, Islamabad, Pakistan, in department of ENT, Head & Neck Surgery, from June 2015 to Dec 2015. Five years data was analyzed from the record room of ENT department, 200 patients with proven malignancy of oral cavity excluding cases involving oropharynx. The past five years cancer record was analyzed. Tumor staging and nodal staging was based on size of primary lesion and neck node status on palpation and on CT scan of neck where present in record.Risk factors were identified accordingly.Results: The highest frequency was for oral cancer in anterior 2/3rd of tongue, 33.5% followed by floor of mouth, 30.5%,lower alveolus 14%, buccal mucosa 10%, upper alveolus 5%, hard palate 3%, and retromolar trigone, 2% each. Tobacco smoking was identified as the major risk factor for increasing frequency of oral cancer. However, no such association could be found for age and gender.Conclusion: Oral cancers are fairly common in our population with tongue and floor of mouth the most frequent sites.Tobacco smoking is the most common risk factor for oral cancer.

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