Computed tomography aspect of primary lung cancer

Background: Primary lung cancer (PLC) is the world’s leading cancer in terms of incidence and mortality. The objective of our study is to identify morphological criteria by scanning towards a histological type of PLCs. Methods: This is a retrospective transversal analytical study, carried out at the oncology, radiotherapy and clinical haematology department of Joseph Ravoahangy Andrianavalona teaching hospital, from January 01, 2014 to December 31, 2018, covering all new histologically proven cases of PLC. The parameters of the study were epidemiological, CT scan and anatomopathological data. Results: We collected 95 cases. The average age was 59.11 years. The male gender was the most affected with a sex ratio of 1.8. The most common clinical call sign was chronic cough with 74.74% of cases. The radiographic appearance was parenchymal opacity in 54.5% of cases. Adenocarcinoma had the predominant histological type with 45.26% of cases associations were found between histological type and tumor site (p=0.0001), intratumor excavation (p=0.0001), intratumor necrosis (p=0.012). Conclusions: Morphological appearance of CT scan lesions may approach histological type of PLCs