Stress-testing cross-cancer generalizability of 3D nnU-Net for PET-CT tumor segmentation: multi-cohort evaluation with novel oesophageal and lung cancer datasets. - Soumen Ghosh; Christine Jestin Hannan; Rajat Vashistha; Parveen Kundu; Sandra Brosda; Lauren G. Aoude; James Lonie; Andrew Nathanson; Jessica Ng; Andrew P. Barbour; Viktor Vegh (CoRR, 2025)