Theme 3 - Gynae Pathology Flashcards
(84 cards)
Vagina, acid or alkali and why?
Glycogen shed from stratified squamous epithelium acts as substrate for anaerobic lactobacilli produce acid keeping pH 4.5. So acid
Draw label the ectocervix, endocervix and transformation zone.
outside exo
then transformation
then endo
type of cells make up ectocervix?
strat sq epithelium
type of cells make up endocervix?
Single layer of tall, mucin producing columnar cells
What feature gives endocervix a larger surface area?
Clefts
What is the junction between the endo and ectcervix called?
squamo-columnar junction
What changes occur to the cervix during puberty, and what happens to the SCJ? 4 points
During puberty the cervix changes shape The lips of the cervix grow The distal end of the endocervix opens Endocervical mucosa becomes exposed to the vaginal environment So the SCJ moves inwards
During the pubertal changes to the cervix the columnar cells are exposed to the vaginal environment. What happens to them and why?
The distal endocervical columnar epithelium is exposed to the acidic vaginal environment
It is not suited to this, so undergoes an adaptive change called metaplasia
define neoplasm (4 points)
New growth,
abnormal
excessive
persists despite withdrawal of genetic or hormone stimulation
What are 3 features of a benign neoplasm?
Remains localised and doesn’t invade surrounding tissues
Generally grow slowly
Good resemblance of parent tissue
5 consequences of benign neoplasms?
Pressure on adjacent tissue Obstruction of lumen of a hollow organ Hormone production Transformation into a malignant neoplasm Symptoms for the patient
4 features of malignant neoplasms
Invade into surrounding tissues
Spread via lymphatics to lymph nodes and blood vessels to other sites (metastasis)
Generally grow relatively quickly
Variable resemblance to parent tissue
7 consequences of malignant neoplasms
Destruction of adjacent tissue Metastasis Blood loss from ulcerated surfaces Obstruction of a hollow viscera Production of hormones Weight loss and debility Anxiety and pain
Neoplasms have the suffix ….
oma
Malignant epithelial tumours are..
carcinomas
Carcinomas are named for the ..
epithelial cell type which they resemble
Carcinomas of glandular epithelium are called
adenocarcinomas
Malignant stromal tumours are
sarcomas
what is the pre malignant state of a neoplasm known as
dysplasia
define dysplasia
There is an accumulation of cells which look somewhat like malignant cells but do not invade the basement membrane
Term for dysplasia in the cervix - UK and US
UK: Cervical intra-epithelial neoplasia (CIN)
US: Squamous intra-epithelial lesion (SIL)
Difference between carcinoma and dysplasia?
invasion through the basement membrane
Most common HPV that cause cervical cancer?
16, 18
Most common HPV that cause genital warts?
6, 11