NYANTI, L E et al. Pleural fluid residue as a diagnostic tool for cytology-negative malignant pleural effusion: A proof-of-concept study. African Journal of Thoracic and Critical Care Medicine, [S. l.], v. 29, n. 4, p. e1149, 2023. DOI: 10.7196/AJTCCM.2023.v29i4.1149. Disponível em: https://www.samajournals.co.za/index.php/ajtccm/article/view/1149. Acesso em: 23 apr. 2026.