ANSWER
From the question on page 33
The CT scan in fig 1 of the question shows a thickened caecum with adjacent fat streaking, but no evidence of abdominal free air or a collection. The specimen of the right colon shows perforation within a central punched out area at the lower pole of the caecum at the site of submucosal injection site (stains of methylene blue still seen) (fig 1).
Figure 1 The right hemicolectomy specimen.
Laparotomy revealed a 1.5×1.5 cm perforation …
