These include the orphan-artery sign (a circumscribed tumor nodule adjacent to a muscularized artery without an obvious accompanying vein; Figure 6, A) and the protruding-tongue sign (a smooth bordered protrusion of tumor into pericolic
Inflamed diverticulum, phlegmon formation (Hinchey la), and small ([less than or equal to]3 cm) pericolic
abscess formation (partial Hinchey lb) were considered to be consistent with the diagnosis of CT-based uncomplicated diverticulitis.
(1) (The Hinchey classification is based on radiologic findings, with 0 for clinical diverticulitis only, la for confined pericolic
inflammation or phlegmon, and lb for pericolic
or mesocolic abscess.6) Exclusion criteria included suspicion of colonic cancer by CT or ultrasound (US), previous CT/US-proven diverticulitis, sepsis, pregnancy, or antibiotic use in the previous 4 weeks.
inflammatory changes and thrombosis in the mesenteric veins or occlusion may occur.
No transmural wound dehiscence, peritonitis, or pericolic
abscesses were found on the necropsy examination of the animals.
CRC: colorectal cancer; IL-6: interleukin-6; CRP: C-reactive protein; MMP-9: matrix metalloproteinase-9; pT2: tumor invades muscularis propria; pT3: the tumor invades through the muscularis propria in the pericolic
tissue; pT4: the tumor penetrates the surface of visceral peritoneum or other organs; pN0: no invasion to regional lymph nodes; pN1:1-3 regional metastatic lymph nodes; pN2: 4 or more metastatic lymph nodes.
Sparse focally adherent pericolic
fat with scattered fibrinous adhesions and palpable lymph node candidates were identified.
There is evidence of fat stranding adjacent to the ascending colon with multiple enlarged pericolic
and mesenteric lymph node.
The two most common CT findings in diverticulitis are wall thickening and pericolic
fat stranding, often in the context of an identifiably inflamed diverticulum .
Intraoperative findings revealed an island of peritoneal nodules adherent to the omentum and studding the peritoneum along the right pericolic
A PET-FDG scan revealed pericolic
inflammatory changes along the course of the transplanted large bowel with diffuse FDG uptake.
There was peritoneal seeding along the pelvis and right pericolic
gutter and along the right hemidiaphragm.