Definitions: Psum = pmax1 + pmax2 + pmax3. It represents the sum of three maximal pleural thickness measurements. Fmax = maximal thickness of pleural tumour along the fissures, measured on sagittal images.
Source / note: International Association for the Study of Lung Cancer (IASLC), Pleural Mesothelioma TNM Classification, 9th Edition.
Disclaimer: This calculator is intended for educational and clinical support purposes only. Final decisions must be made by qualified clinicians using full clinical, imaging, laboratory, pathological, and multidisciplinary assessment.