Figures
![Figure 1.](/tables/gr732w-g001.jpg)
Figure 1. CT imaging of the abdomen showed thickening of the sigmoid colon wall which corresponded to a palpable firm cord-like mass (20 × 5 cm) in the left lower quadrant with tenderness on physical examination.
![Figure 2.](/tables/gr732w-g002.jpg)
Figure 2. Colonoscopy revealed that the descending colon mucosa had hyperemia, constriction, edema, and with cobble-stone sign (a) and the rectum was the most seriously affected segment which had circumferential erosion and superficial ulcer (b).
![Figure 3.](/tables/gr732w-g003.jpg)
Figure 3. Colonic biopsy demonstrated mucosal infiltration by inflammatory cells and focal interstitial fibrosis (H&E staining, × 20).
![Figure 4.](/tables/gr732w-g004.jpg)
Figure 4. Endoscopic submucosal dissection procedure.
![Figure 5.](/tables/gr732w-g005.jpg)
Figure 5. ESD specimen showed erosion, inflammatory exudates, granulation tissue, and fibrinoid degeneration of small blood vessel wall (H&E staining, × 20).
![Figure 6.](/tables/gr732w-g006.jpg)
Figure 6. PET-CT of the abdomen showed significant accumulation of FDG uptake (SUV max: 5.7), diffuse edema and thickening (about 1.5 cm) of the distal descending colon wall, indicating an inflammatory lesion.
![Figure 7.](/tables/gr732w-g007.jpg)
Figure 7. Macroscopic examination of the partial colectomy revealed (a) a 48 cm segment of stiff bowel and (b) a 48 × 7 × 6 cm portion of stiff mesentery.
![Figure 8.](/tables/gr732w-g008.jpg)
Figure 8. Histologic findings in the partial colectomy and mesentery included fat necrosis and multifocality lipid-filled macrophages in mesentery adipose tissue (H&E staining, × 4, a), multifocality fibrosis in mesentery adipose tissue (H&E staining, × 4, b; H&E staining, × 20, c), markedly edematous submucosa and partially eroded and hemorrhagic mucosa (H&E staining, × 2.5, d).
Table
Table 1. Radiographic Features of Sclerosing Mesenteritis
Thickness of the involved mesentery |
Increased fat density |
Fibrosis and enlarged lymph nodes |
Fat ring sign |
Pseudocapsule |
Dilated or engorged mesenteric vessels |
Well-defined or poorly defined mesenteric mass |
Strand-like densities around the mesenteric vessels |
Well-defined soft tissue nodules (usually less than 5 mm) |
Bowel obstruction |