Diagnosis of oral Malignancy Its crucial effect on 迟发性口腔恶性肿瘤的诊断具有决定性的作用课件.ppt

Delayed Diagnosis of oral Malignancy:Its crucial effect on management and prognosis Dr Hassan El Abdin Introduction Malignant condition of the oral cavity comprises about 5.6% of all malignant tumours of the human body, in Saudi Arabia1. It is the third most common tumour in females and the fourth in males.1 Ajarim,D Proce Saudi Oncol Symp 1995 Introduction In the United States, it is relatively uncommon, and represent 2.5% of the total.2 Shafer JADA 1975 In the Scandinavian countries, it comprises about 2% of all malignant tumours, and the prognosis is poor compared with malignancies in other sites.3 Bruun Oral Surg 1976 Introduction Delayed diagnosis of malignant condition and particularly of the oral cavity, is of crucial importance for the clinical management, cost of care and the outcome. Introduction Oral malignant conditions can be easily diagnosed. Not only, is the oral cavity accessible to examination, but the oral lesion produces a recognizable warning signs Introduction Despite the fact that oral cavity is second only to skin in the accessibility for examination and early detection of cancer, the five-year survival rate is low. It is varies between 15% - 52% which is the fifth lowest 5-year survival rate. Introduction The survival of oral cancer patient depend on early diagnosis and treatment. Most studies on oral malignancy prove that the mortality rate drops effectively, if the lesions are recognized treated early.4 James,A.G Introduction Tongue cancer, the 5-year survival rate will rise from 15% to 55% if the lesion is diagnosed and treated while it is small and localized. Introduction Unfortunately, early lesions are frequently asymptomatic, small, innocuous and overlooked by the clinician during routine oral examination. Introduction It is the responsibility of the clinician carefully examine any suspicious lesion. refer immediately for histological investi