Figure 3.

A representative true positive poorly differentiated colorectal ADC case from the endoscopic biopsy test set. Heatmap images show true positive predictions of poorly differentiated ADC cells and they correspond, respectively, to H&E histopathology (a, c, d) using stomach model (upper panel), transfer learning from stomach model (middle panel), and transfer learning from ImageNet model (lower panel). According to the pathological diagnosis provided by surgical pathologists, histopathological evaluation for each tissue fragment is as follows: #1, #2, #4, #5, and #7 were positive for poorly differentiated ADC; #3 and #6 were negative for poorly differentiated ADC. The high magnification image (b) shows representative H&E histology (#3 fragment), which is negative for poorly differentiated ADC.