PMC4906139_01
Preoperative images. (A) Plain abdominal radiography shows thread-like calcifications in the right-sided colon area (arrows). (B) Non-contrast abdominal computed tomography reveals diffuse thickening of the ascending colon wall along with calcifications in the ascending colon and mesenteric veins (arrows).
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Abdominal radiography revealed threadlike calcifications in the right abdomen (Fig. 1a). Computed tomography (CT) revealed a dilated small intestine, thickened colonic wall, luminal stenosis of the ascending colon, and serpentine calcifications alongside the colonic and mesenteric veins, extending from the ileocolic to the middle colic vein (Fig. 1b).
Intraoperative findings. Dark purple-colored intestine was seen between the cecum and transverse colon (A: Ascending colon; C: cecum; T: transverse colon).
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In particular, the cecum and proximal ascending colon were strongly affected and they were hard (Fig. 2).
Resected specimen. The resected specimen shows a dark-purple thickened colon and luminal stenosis at the ascending colon (arrows).
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We performed a right hemicolectomy with ileo-colonic anastomosis (Fig. 3).
Microscopic findings. Histological examination (hematoxylin-eosin staining, x40) demonstrates shedding mucosa, increased submucosal collagen fibers, intimal thickening, the normal arteries and calcifications of the veins (arrows).
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Pathological examination of the resected portion revealed shedding mucosa, increased submucosal collagen fibers, intimal thickening, calcifications of the mesenteric veins, normal arteries, and no malignancy, which was consistent with the typical pathological findings of MP (Fig. 4).