Background: Lung tumor is still being the most common tumors in the world. Lung tumor is defined as the abnormal growth of lumps in lung tissue that might be benign or malignant. CT scan is one of the most appropriate modality to diagnose the supposition of lung tumors and evaluating the tumor itself. The purpose of this study is to identify the CT scan images of patients with a lung tumor. Method: The study was conducted by a retrospective descriptive design. In this study, sampling was performed at Radiology Department, Zinoel Abidin General Hospital, from July 2018 to October 2018. Data were obtained from the thorax CT scan examination request forms and questionnaire of respondent characteristics. There were 66 cases of lung tumors that met the Latar Belakang: Tumor paru masih menjadi penyebab utama keganasan di dunia. Tumor paru merupakan pertumbuhan abnormal benjolan pada jaringan paru yang dapat bersifat jinak ataupun ganas. CT scan merupakan salah satu modalitas yang digunakan untuk mengevaluasi dan mendiagnosis kecurigaan tumor paru. Penelitian ini bertujuan untuk mendapatkan gambaran profil hasil pemeriksaan CT scan pasien tumor paru. Metode: Jenis penelitian yang digunakan adalah studi deskriptif retrospektif. Pengambilan sampel dilakukan di Bagian Radiologi RSUD Dr. Zainoel Abidin periode Juli 2018-Oktober 2018. Data diperoleh dari hasil ekspertisi CT scan toraks dan kuisioner karakteristik responden. Didapatkan 66 kasus tumor paru yang

Introduction: Lung cancer which is a major cause of cancer deaths provides a perspective on the importance of the diagnosis of cancer since there is suspicion that influences the clinical diagnosis of lung cancer. Imaging modalities such as the use of contrast CT-Scan are very helpful in giving initial imaging before confirming cytopathological examination. The purpose of this study was to determine the value of the diagnostic tests possessed by CT-Scan compared to the gold standard cytopathological examination in patients with clinical diagnosis of lung cancer.Methods: This study used a diagnostic study design with a retrospective approach at Zainoel Abidin General Hospital, Banda Aceh-Indonesia during the period June - August 2018. Analysis of diagnostic tests using cross-tabulation then calculation of sensitivity, specificity, positive predictive value (PPV), negative predictive calculations value (NPV), positive likelihood ratio (LR +), negative likelihood ratio (LR-), and accuracy were performed.Results: Most CT-scan findings were pulmonary mass (59.3%) and the most cytopathological findings were squamous cell carcinoma (47.5%). The CT-Scan diagnostic test value compared with the gold standard cytopathological examination in the form of sensitivity, specificity, PPV, NPV, LR +, LR-, and accuracy was 75%, 30.4%, 64.4%, 50%, 0.054, 0.822 and 61% respectively.Conclusion: Lung cancer could manifest as a wide spectrum of radiological presentations. CT-Scan provide a high sensitivity and accuracy of diagnostic in person with clinical presentation of lung cancer.Â