Munandar, M. A. R., Kusumastuti, I. ., Herlina, L. ., & Munandar, H. P. . (2026). Shoulder Pain as The First Clue: A Case Report of Pancoast Tumor with Early Presentation. Respiratory Science, 6(2). https://doi.org/10.36497/respirsci.v6i2.202