Module 3: Gentials: Cervix and Vagina Flashcards
Now these cards are about pathologies of the cervix. First what is the endo and ectocervix lined by?
Ectocervix: lined by hormonally responsive stratified squamous epithelium
Endocervix: lined by simple columnar epithelium
Next just a quick review: What is acute cervicitis?
Endocervix:
- -gonococcal, chlamydia, trichomonas, herpes
- postpartum, post D and C
- -purulent vaginal discharge
What is chronic cervicitis?
Non-specific and incidental
- -lymphocytes and plasma cells normally present in wall
- -granularity, thickening
- -retention (nabothian cysts)
What is squamous metaplasia? slide 5
Irritation at puberty by lactic acid
- -conversion from columnar to stratified squamous
- -physiological
- -no HPV
- forms the transformation zone: squamocolumnar junction
Moving on to carcinoma in situ of the cervix. What are the HPV strains of concern?
HPV 16 and 18
–E6 and E7 inactivating p53 and Rb
What is the histology for carcinoma in situ?
Both still have koilocytes
CIN I: lower 1/3rd dysplasia
CIN II: lower 2/3rd dyplasia
CIN III: dysplasia throughout without koilocytes but BM in tact – this is actually carcinoma in situ
–note on cytology II and III are group together as HSIL and I is LSIL
Increased dysplasia shows what on histology?
High nuclear: cytoplasmic ratio
more basophilic nucleus (hyperchromatism)
What is the best diagnostic test for cervical carcinoma in situ?
Colposcopy and biopsy to look for BM intact
What are the futures of micro invasive cervical cancer?
Microinvasive: 5mm deep and 7mm wide
no invasion of blood vessels or lymphatics
Cone Biopsy: taking out the total squamocolumnar junction for tx
What are the features of fully invasive cervical cancer?
Fully Invasive: greater than 5mm deep and 7mm wide; invasion of lymph and blood vessels
What is the most important predisposing factor for invasive cervical cancer?
multiple sexual partners
multi party
early age at first sexual intercourse
immunodeficient
What is the presentation for invasive cervical cancer?
Postcoital bleeding most common
Leukoria:
Dyspareunia: painful intercourse
What does histology show for invasive cervical cancer?
Keratin pearls abundant for well differentiated: better dx
note there is moderate and poorly differentiated
What are the complications for invasive cervical cancer?
Most common cause of death is renal failure as a result of bilateral hydronephrosis as a result of invasion of the bladder
Constipation from rectal invasion
Invasion of vagina
Metastasis to inguinal lymph nodes
What does a pap cytology show?
Naturally in the cervix, squamous cells mature from bottom to top as they accumulate glycogen
- -Smaller Nucleus: most mature/largest = superficial cells (pap smear)
- Biggest nucleus/mitotically active = least mature = parabasal cells
What is the Schiller’s Test?
test for non-glycogen/highly mitotic areas — site of carcinoma
–paint cervix with iodine and look for unstained pale patches