"Top-down differentiation" in our paper denotes the process whereby the single-layered reserve cell formation is induced from the columnar epithelium
The mucosa is composed of simple columnar epithelium
on a lamina propria of loose connective tissue.
The classic histopathology findings included the following: (1) a skin tag: stratified squamous epithelium with occasionally striated muscles or cartilage; (2) a main lesion: stratified squamous epithelium with surface parakeratosis and absence of dermal adnexal structures, with mild inflammatory infiltrate of lymphocytes, plasma cells, and neutrophils possibly present; and (3) a sinus tract: squamous or pseudostratified columnar epithelium
. A respiratory epithelium, thyroglossal dust cyst, or its remnants were reported in some cases .
They are characterized by a lining of respiratory tissue--ciliated cuboidal or columnar epithelium
which may be pseudostratified--and they contain thick, mucoid material secreted from this lining [8, 10, 13].
The cyst was found to be lined with benign pseudostratified ciliated columnar epithelium
with goblet cells (respiratory epithelium) and an associated xanthogranulomatous reaction (Figure 3).
Histology was performed, which showed a unilocular cyst, lined by pseudostratified ciliated columnar epithelium
, with a discoloured wall showing no submucosa (Figure 4).
Histopathological examination of hematoxylin staining soft tissue sections revealed a loose and myxoid connective tissue stroma covered by columnar epithelium
of a single layer, the epithelium resembled inner enamel epithelium (Figure 1B and Figure 2).
These can occur naturally as mucus retention cysts or after sinus surgery, by ostial obstruction and formation of a lesion lined by low columnar epithelium
. (1) Mucoceles can be treated surgically by external or intranasal decompression.
Mucosa was made up of simple columnar epithelium
with goblet cells and the number of goblet cells decreased towards the apex of the villi (Firdous and Lucy, 2012).
(13) reported ciliated stratified columnar epithelium
at the 12th-16th week of intrauterine development.
The striated ducts had simple columnar epithelium
while the excretory ducts had the pseudostratified columnar epithelium
with goblet cells.
Simple columnar epithelium
cells were arranged tightly.
Histologically, there are three patterns: urethral type, lined with pseudostratified columnar epithelium
; epidermoid type, lined with squamous stratified epithelium; and mixed type, which incorporates both types of epithelium.
Histopathology revealed that the large intestine nodules were composed of projections of the mucosal epithelium into the submucosa, which formed tubules lined by a single layer of columnar epithelium
with high cellularity (1-2 mitosis / obj.
At a dose of 12.5mg/kg SpHE, it is still possible to observe the poorly preserved gastric mucosa, presenting exfoliations of the simple columnar epithelium
and necrosis of the superficial epithelium.