Female GU Flashcards
CIN
pre malignant transformation and dysplasia of the squamous cells on the surface of the cervix
Presenting complaint cervical cancer
post coital bleeding
mucoid vaginal discharge
Risk factors for cervical cancer
HPV (16 and 18) Smoking oral contraceptives multiple pregnancies early age of sexual intercourse multiple sexual partners
Clinical features of endometriosis
severe pain and dysmenorrhea
pain during intercourse
infertility
chronic fatigue
Meig syndrome
benign ovarian fibroma
malignant ascites
pleural effusion
Theories of endometriosis
retrograde menstruation
dissemination of endometrial cells
decreased cell mediated immune response
Fibroids
benign leiomyomas
whorled pattern like silk
HPV infection: Early genes E6 and 7
inactivate p53 and TSGs - allow amplification of the viral genome
HPV late genes: L1 and 2
encode capsid proteins
Ovarian stromal hyperplasia
non neoplastic proliferation of ovarian stream cells
Sclerosing adenosis
benign proliferation of glandular tissue and stroma
multiple small lumps, microcalcification
Radial scars
sclerosing duct hyperplasia
hyperplastic tissue cells and a central fibrous core
asoc with DCIS
Lysozyme
enzyme in mucosal surfaces that can break down gram positive cell walls
Lctoferrin
PROTEIN found at mucosal surfaces that chelates iron which inhibits bacterial growth
3 function of antibodies
opsonise pathogens
activate complement
neutralise toxins
function of Th1, Th2, Th17, T reg
Th1: IFN gamma secretion
Th2: allergic reactions
Th17: recruits neutrophils, host defence at mucosal surfaces
Treg: immunosuppressive - maintain tolerance
Encapsulated organism
n. meningitidits
strep pneum
haemophilus influenzae
Components of virchows triad (clotting)
hypercoaguable - pregnant, malignancy, oestrogen
vascular wall injury - atherosclerosis, trauma
circulatory stasis - AF, left vent dysfunction
Three blood vessel changes in inflammation
Increased permeability
vasodilation
endothelial activation
How is the immune response terminated
neutrophils short half life in tissues
short half life of inflammatory mediators
production of anti inflammatory cytokines eg. TGF beta
neural impulses inhibit TNF
cytokines released in cascades
Activation of kinin system and function
factor XII
create proteins which sustain vasodilation
C5a
chemotaxic for neutrophils
increased vascular permeability
release of histamine from mast cells
C3b
opsonisation of bacteria
Benefits and harm of acute inflammation
benefits: dilution of toxins, delivers immune cells and nutrients, fibrin traps micro-organisms, stimulation of immune response
detrimental: swelling of soft tissues, digestion of normal tissues and inappropriate response eg. hypersensitivity