There are various types of cells squamous. In terms of anatomy, the squamous epithelium is one of the several kinds of epithelia. The squamous epithelium is characterized by the most superficial layer that consists of flat and scale like cells called as the squamous epithelial cells. The squamous epithelium could be divided into 2 types namely:
Simple Squamous Epithelium: This epithelium would consist of single layer of the types of cells squamous. More often, this epithelium is permeable. These could be found in tissues like capillaries and alveoli where the rapid diffusion is essential.
Stratified Squamous Epithelium: This epithelium would consist multiple layers of the types of cells squamous. This epithelium would form the outermost layer of the skin. This type of the epithelium is more suited for the areas in the body that are subject to constant abrasions as these are the thickest.
Some of the major types of cells squamous are as follows:
Atypical Squamous Cells:
These types of cells squamous are further divided into 2 kinds:
• ASC-US: These types of cells squamous can be expanded as atypical cells of undetermined significance. These cells do not appear to be completely normal. But, the doctors are not certain about what these changes in cells mean. At times, the changes in the cell are related with an HPV infection. However, these changes could be due to other factors also. For those women who are diagnosed with ASC-US, a sample of cells might be tested for the high risk types of HPV. If high risk type of HPV is found, follow up testing would be performed usually. If the result is negative, it could assure that cancerous condition is not there.
• ASC-H: The atypical squamous cells could not exclude the high grade squamous intraepithelial lesions. These types of cells squamous do not appear to be normal. Again, the doctors are not certain about these changes in this type also. It is anticipated that ASC-H lesions might be at higher risks for being precancerous when compared with ASC-US lesions.
Low Grade Squamous Intraepithelial Lesions:
These types of cells squamous are considered to be the mild abnormalities that are caused by an infection caused by HPV. In the name, the low grade suggests that there would be some early changes in sizes and shapes of the cells. The intraepithelial is referring to the layer of the cells that are forming the surface of cervix. These are sometimes categorized as mild dysplasia.
High Grade Squamous Intraepithelial Lesions:
These types of cells squamous are the severe abnormalities that would have a higher likelihood for progressing into cancer if these are left untreated. In the name, the high grade suggests that there would be more evident changes in the sizes and shapes of the precancerous cells. It also suggests that these cells would look very different from the normal cells. The high grade squamous intraepithelial lesions include moderate and severe dysplasia and carcinoma.
Squamous Cell Carcinoma:
These types of cells squamous are the cervical cancer. In this kind, the abnormal squamous cells would have invaded deeper into cervix or other tissues and organs.