PMC4643456_01
Abdominal CT scan obtain in the second day of hospital stay in the ICU showing free intraperitoneal air (white arrow) consistent with colonic perforation.
gr1.jpg
PMC4643456_01_gr1.jpg
fig0005
Abdominal CT shows free intraperitoneal air consistent with colonic perforation (Fig. 1).
Sigmoid colon. Transmural necrosis (white arrow).
gr2.jpg
PMC4643456_01_gr2.jpg
fig0010
The patient went to exploratory laparotomy where a perforation at the sigmoid colon was found (Fig. 2).
Sigmoidectomy specimen stained with Haematoxylin-Eosin. Small basophilic angulated crystals (black arrow) embedded in mucosa consisted with calcium polystyrene sulfonate related colonic perforation.
gr3.jpg
PMC4643456_01_gr3.jpg
fig0015
Microscopically examination revealed areas of transmural necrosis in sigmoid colon and rectal stump of heterogeneous distribution and acute peritonitis with small basophilic angulated crystals embedded in the mucosa (Fig. 3).