Re: Absence of Endocervical/Transformation zone component
It means that a sample of cells from the cervical canal were not on the pap. It is really important to have a sample of these cells, as the transformation zone is a common area for abnormal cell changes to occur. The transformation zone is the entrance to the cervical canal (the blood travels through the cervical canal from the uterus when you are having your period).
Are you going for a colposcopy? You will likely also have an endocervical curettage (ECC) done if you go for a colpo, which is a more thorough sampling of the cervical canal. It can hurt a bit (or a lot, depending on your pain tolerance), you might want to take a couple ibuprofen beforehand or talk to your doctor about whether or not the ecc will be done.
There are two types of cells in the cervix. Squamous are the cells on the surface of the cervix, glandular cells are located inside the cervical canal and are more difficult to detect with a pap smear.
Hope this helps.