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Diagnostic Imaging Pathways - Staging of Colorectal Cancer

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1 Click to view full size image

Rectal Carcinoma

Image 1 (Computed Tomography): Thickened rectal wall with invasion of the mesorectal fascia on the right side (arrow). The mesorectal fascia on the left appears normal.

2 Click to view full size image

Rectal Carcinoma

Image 2 (Endorectal Ultrasound): Rectal carcinoma with infiltration into the perirectal fat (arrows) (T3 lesion).

3a Click to view full size image Colonic Carcinoma

Image 3a: Right hemicolectomy specimen showing a large ulcerated and exophytic caecal carcinoma.

3b Click to view full size image Image 3b (H&E, x2.5) and 3c (H&E, x10): Histological sections showing a moderately differentiated colorectal adenocarcinoma composed of malignant glands invading into the bowel wall (blue arrows). The glands are lined by cells showing marked nuclear atypia. Normal colonic mucosa is included for comparison (green arrow).
3c Click to view full size image

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