Figure1

A case from our institution's records. Thread-like calcification (white arrowhead) and intestinal obstruction (black arrowhead) on plain films (A). Prior to treatment, computed tomography revealed thickening and calcification (arrowhead) of the ascending colon (B). Colonoscopy showed dark purple discoloration and ulceration (arrowhead) of the mucosa pre-treatment (C). Repeat computed tomography and colonoscopy displayed healing ulcers with persistent dark purple mucosa (D), while bowel wall thickening resolved but mesenteric vein calcification persisted (E, arrowhead). Endoscopic biopsy specimens revealed inflammatory cell infiltration in the lamina propria, fibrous wall thickening, and hyalinization of small submucosal vessels (white arrowhead), along with collagenous fiber proliferation around the mesenteric vein (black arrowhead) (F, × 400)