Abstract
In the district of Srikakulam in Andhra Pradesh in South India the habit of reverse smoking is widespread. In a house to house survey of oral cancer and precancerous conditions, comprising 10,169 villagers, 43·8% were reverse smokers; the female: male ratio being 1·7: 1. Ten previously undiagnosed cases of oral cancer, 9 located to palate, were found. The prevalences for leukoplakia, preleukoplakia and leukokeratosis nicotina palati were 4·9%, 2·9% and 9·5%. Of 497 leukoplakias, 422 were located to the palate and 413 of these patients had the habit of reverse smoking. Histologically, 80% of 381 palatal biopsies had a hyperorthokeratosis. Epithelial atypia was found in 15·3% of leukoplakias, in 3·6% of the preleukoplakias, and in 9·1% of leukokeratosis nicotina palati. Various explanations for the habit of reverse smoking are suggested and discussed. In addition to reverse smoking, other tobacco habits were also recorded; all habits and oral lesions were compared and have been discussed according to their apparent interrelationships and distribution by sex and age.
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- Mehta F. S., Pindborg J. J., Gupta P. C., Daftary D. K. Epidemiologic and histologic study of oral cancer and leukoplakia among 50,915 villagers in India. Cancer. 1969 Oct;24(4):832–849. doi: 10.1002/1097-0142(196910)24:4<832::aid-cncr2820240427>3.0.co;2-u. [DOI] [PubMed] [Google Scholar]
- PINDBORG J. J., RENSTRUP G., POULSEN H. E., SILVERMAN S., Jr STUDIES IN ORAL LEUKOPLAKIAS. V. CLINICAL AND HISTOLOGIC SIGNS OF MALIGNANCY. Acta Odontol Scand. 1963 Nov;21:407–414. doi: 10.3109/00016356309028203. [DOI] [PubMed] [Google Scholar]
- Pindborg J. J., Barmes D., Roed-Petersen B. Epidemiology and histology of oral leukoplakia and leukoedema among Papuans and New Guineans. Cancer. 1968 Aug;22(2):379–384. doi: 10.1002/1097-0142(196808)22:2<379::aid-cncr2820220215>3.0.co;2-a. [DOI] [PubMed] [Google Scholar]
- Pindborg J. J., Sirsat S. M. Oral submucous fibrosis. Oral Surg Oral Med Oral Pathol. 1966 Dec;22(6):764–779. doi: 10.1016/0030-4220(66)90367-7. [DOI] [PubMed] [Google Scholar]
- Quigley L. F., Jr, Shklar G., Cobb C. M. Reverse cigarette smoking in Caribbeans: clinical, histologic, and cytologic observations. J Am Dent Assoc. 1966 Apr;72(4):867–873. doi: 10.14219/jada.archive.1966.0112. [DOI] [PubMed] [Google Scholar]
- REDDY D. G., RAO V. K. Cancer of the palate in coastal Andhra due to smoking cigars with the burning end inside the mouth. Indian J Med Sci. 1957 Oct;11(10):791–798. [PubMed] [Google Scholar]