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Sample images from the study population. From left to right: (A) adenocarcinoma in a 59-year-old man; (B) squamous cell carcinoma in a 71-year-old-man; (C) fibrosis in a 61-year-old man and (D) inflammation in a 51-year-old woman. The green overlays highlight the manually-segmented areas of interest (ground truth).
