CT-Based Quantitative Analysis for Early Detection of Pulmonary Nodules Associated With Lung Cancer
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Background: Pulmonary nodules are commonly detected on chest computed tomography (CT), but differentiating benign from malignant nodules remains clinically challenging because many nodules are benign while some malignant lesions may be missed or require delayed confirmation. Objective: To evaluate CT-based quantitative and morphological characteristics of pulmonary nodules and examine their association with tumor status among patients with suspected lung cancer-related nodules. Methods: This cross-sectional observational study was conducted at Lahore General Hospital over 90 days after synopsis approval. Sixty adult patients with CT-detected pulmonary nodules and adequate image quality were included. CT-based variables included nodule size, volume, shape, location, margin characteristics, pleural effusion, lymph node involvement, nodule type, and tumor status. Continuous variables were summarized as mean ± standard deviation, categorical variables as frequencies and percentages, and associations between categorical CT features and tumor status were assessed using chi-square tests. Results: The mean age was 53.68 ± 15.62 years. Mean nodule size was 17.07 ± 7.51 mm, and mean nodule volume was 286.72 ± 158.91 mm³. Malignant nodules accounted for 51.7% of cases. Margin characteristics showed the strongest association signal with tumor status (χ² = 5.792, p = 0.055), while shape, location, pleural effusion, and lymph node involvement were not statistically significant. Conclusion: CT-based assessment provides useful morphological and quantitative information for pulmonary nodule evaluation, with margin characteristics showing the most clinically relevant trend. Larger studies with diagnostic accuracy analysis are required
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