Imaging features and correlation with short-term prognosis in laparoscopic radical resection of colorectal cancer

Figure 1 Images of patients with rectal cancer. A: Sagittal view showing intestinal wall thickening located approximately 7.0 cm from the anal edge, with a lesion length of approximately 3.6 cm. There is local posterior margin breakthrough of the outer membrane layer into the periintestinal fascia; B: Posterior wall of the rectum demonstrating thickening and uneven enhancement; C: T2-weighted imaging sequence revealing significant uneven thickening of the posterior rectal wall, penetrating the adventitia and invading adjacent periintestinal fascia; D: DWI sequence displaying patchy high signal intensity within the lesion; E: Corresponding apparent diffusion coefficient map indicating low signal intensity, indicative of significantly restricted diffusion.