It can have benign columnar epithelium and mucosal cysts deep to the muscularis mucosa on microscopy.
Smaller tumors can usually be confined to the muscularis propria layer of the intestinal wall.
The muscularis, is a layer of smooth muscular tissue that helps the gallbladder contract, so that it discharges its bile into the bile duct.
They migrate to the submucosa and muscularis mucosae and cause severe necrosis.
These neurons provide motor inputs to both layers of the muscularis externa, and provide both parasympathetic and sympathetic input.
Underneath the epithelia is an underlying lamina propria, muscularis, perimuscular layer and serosa.
The presence of ganglion cells consistently correlated with calretinin-positive thin nerve fibrils in the lamina propria, muscularis mucosae and superficial submucosa.
It is characterized by deep folds into the muscularis propria.
