Figure 1
From: Adequate tissue sampling for the assessment of pathological tumor regression in pancreatic cancer

Images showing the areas that are easy or difficult to identify as the cancer area. (A), (B), (C), and (D) are the same areas of the pancreas, respectively. (A) and (B) are easy to identify, while (C) and (D) are difficult to identify. The black arrows show the largest cancer area determined macroscopically, and the red arrows show the largest cancer area determined histologically. Circles with a red dotted line indicate the histologic cancer area.