直肠下段距肛缘约3.8 cm肠壁偏心性增厚，呈结节样改变；截面大小约1

The lower part of the rectum is about 3.8 cm from the anal verge with eccentric thickening of the intestinal wall, showing nodular changes; the cross-sectional size is about 1.6 X 1.4 cm, and the upper and lower diameters are about 1.3 cm; DWI and ADC images show mild diffusion restriction, enhanced scanning Significantly inhomogeneous strengthening. <br>Multiple enlarged lymph nodes were seen in the pelvis, and the larger one was located next to the left iliac vessel, with a cross-sectional size of about 3.5 X 2.6 cm; DWI and ADC images showed restricted diffusion, and the enhanced scan showed obvious heterogeneous enhancement. <br>The bladder can be filled, the wall is slightly thickened, and there is no obvious abnormal signal focus.

The lower segment of the rectum is approximately 3.8 cm away from the anal edge, with eccentric thickening of the intestinal wall and nodular changes; The cross-sectional size is about 1.6 X I.4 cm, and the upper and lower diameters are about 1.3 cm; DWI and ADC images show mild diffusion limitation, with significantly uneven enhancement on enhanced scans.<br>Multiple enlarged lymph nodes can be seen in the pelvic cavity, with the larger one located next to the left iliac artery, with a cross-sectional size of approximately 3.5 X 2.6 cm; The DWI and ADC images show limited diffusion, and the enhanced scan shows significant uneven enhancement.<br>The bladder is well filled, with slightly thickened walls, and no obvious abnormal signal lesions are found inside.

The lower rectum is about 3.8 cm away from the anal margin, and the intestinal wall thickens eccentrically, showing nodular changes; The section size is about 1.6 X I.4 cm, and the up-and-down diameter is about 1.3cm.: DWI and ADC images showed mild diffusion limitation, and enhanced scanning was obviously uneven enhancement.<br> Multiple enlarged lymph nodes were found in pelvic cavity, and the larger one was located beside the left iliac blood vessel, with a cross-sectional size of about 3.5 X 2.6 cm；. DWI and ADC images showed that diffusion was limited, and enhanced scanning showed obvious uneven enhancement.<br> The bladder is well filled with slightly thickened wall, and no obvious abnormal signal focus is found.