Descriptive analysis of laterality in lung cancer and smoking in Quito-Ecuador

Ayala Brito Rosa Guadalupe; Pazmino Navarrete Maria Teresa; Canarte Santana Maria Gabriela; Rivera Salas Javier Alexander; Vizcaino Cevallos Betsabe Patricia; Zabala Aguilar Mayra Alexandra; Montaluisa Pilatasig Johana Natali; Arevalo Jaramillo Maria Daniela

Volume : VIII, Issue : XII, December - 2019

Descriptive analysis of laterality in lung cancer and smoking in Quito-Ecuador

Ayala Brito Rosa Guadalupe, Pazmino Navarrete Maria Teresa, Canarte Santana Maria Gabriela, Rivera Salas Javier Alexander, Vizcaino Cevallos Betsabe Patricia, Zabala Aguilar Mayra Alexandra, Montaluisa Pilatasig Johana Natali, Arevalo Jaramillo Maria Daniela

Abstract :

Introduction In Ecuador, lung cancer ranks eighth in men and ninth in women according to the National Tumor Registry, however, it has little research in our country. The objective of this research is to describe a relationship between the location of lung cancer and laterality. Methods 37 histopathological samples were analyzed during the years 2012–2016 using descriptive analysis of frequency as well as crossing of variables. Results Of the 37 patients, 7.3% correspond to non–smokers, 3.1% to smokers in the past and 4.2% current smokers, the rest corresponds to ignorance of this practice. Regarding location in non–smoking patients, it is located in the upper lobe in 57%, while smokers in the past have a greater predisposition to be located in the lower lobe in 17% with an OR = 2.25 95% CI (0 , 61–8.18); p = 0.15, while current smokers are more likely to develop a tumor in the left lung over the right and there is no laterality relationship between smokers in the past and non–smokers. Conclusion The distribution of lung cancer in our research is similar to that demonstrated in international studies in which right lung cancer occurs more frequently than the left one, as well as the upper lobe above the lower one, having to recommend that we should start prospective studies and evaluate survival according to laterality.