Histology assessment of bipolar coagulation and argon plasma coagulation on digestive tract

Figure 1 Colon specimen. A: Bipolar electrocoagulation of a colon specimen; B: Argon plasma coagulation of a colon specimen.

Figure 2 Cellular necrosis. A: “Ghost cells” [hematoxylin and eosin (HE), 250 ×]; B: Citoplasmatic acidofilia and cellular picnosis (HE, 400 ×).

Figure 3 Macroscopic aspects of coagulated spots (both methods).

Figure 4 The microscopic aspect of coagulated spots with different depths of coagulation necrosis. A: Microscopic aspect of superficial mucosal involvement. Citoplasmatic acidofilia, cellular picnosis in an esophageal specimen [hematoxylin and eosin (HE), 250 ×]; B: Microscopic aspect of submucosal involvement in a gastric specimen (HE, 250 ×); C: Microscopic aspect of muscularis propria involvement in a colonic specimen (HE, 250 ×).