Abstract Quantitative analysis of glucose consumption measured by maximum standardized uptake value (SUVmax) and Total lesion glycolysis (TLG) in lung bronchogenic carcinoma is the first aim of this work to evaluate the correlation between SUV max, TLG and different histopathologic subtypes and grades of Bronchogenic carcinoma, also their correlation with TNM pathologic staging. Glucose consumption of primary tumor was quantified using SUVmax and TLG in 20 patients with histologically-confirmed bronchogenic carcinoma .Tumors were classified according to their histopathological reports into 4 different histological subtypes (Adenocarcinoma, Squamous cell, Small cell, Undifferentiated). Adenocarcinomas were grouped according to the histological tumor grade into : low grade (adenocarcinoma grade 1,2), and high grade (adenocarcinoma grade 3, 4). Tumors were grouped according to TNM pathological staging into 4 grades and their subtypes and correlated to SUVmax and TLG. Comparisons between SUVmax, TLG and histologic Types, Grades, stages were performed using the KruskalWallis test followed by a Dunn’s multiple comparison tests. The Mann Whitney-U test was used to assess differences when two groups were studied in Comparing High and Low grades. According to Clinico-pathological characteristics of 20 patients with bronchogenic cancer, Association between SUVmax, TLG of the primary tumor and subtypes, stage showed that no significant difference between histological types regarding SUVmax and TLG (P value > 0.05). Association between SUVmax, TLG and histopathological grades shows statistical significant difference between histological Grades regarding SUVmax and TLG (P value < 0.05). Low SUVmax and TLG were associated with low-grade (grade 2) tumors, and higher with higher (3, 4 grades) grades. The sensitivity for SUV max is 100% and specificity is 85.7%.The sensitivity for TLG is 100% and specificity is 100% .