Scattered apoptosis and proliferation in the injured epithelium, lamina propria and serosa accompany the peak inflammatory cell infiltration on day 7.
A hysterectomy is indicated because the uterine serosa and endometrium often are sites of occult metastasis, and the prevalence of synchronous endometrial cancer is relatively high.
Factors contributing to diverticular formation include a pressure gradient between the lumen and serosa and areas of relative weakness in the bowel wall.
Multiple smaller polypoid masses, ranging from 0.2 to 1.1 cm, were present in the mucosa, submucosa, and serosa of the surrounding duodenum.
A portion of the cystic mass showed benign bladder smooth muscle and serosa focally adhered to the outer cyst wall.
No inflammation was seen in the muscular and serosal layers of the appendix.
First a nonspecific inflammation of the mucosa and submucosa is seen followed by widespread superficial ulceration, then muscular and serosal involvement leading to a rigid short colon is seen.
It is generally confined to the submucosa, muscularis, and serosal layers, making endoscopic diagnosis difficult.
This finding supports the theory that hyperplastic mesothelial cells derive from reactive serosal mesothelium and are dislodged into draining lymphatics.