Path Flashcards
fetal growth restriction due to fetal abnormalities
SYMMETRIC
caused by: chromosomal disorders, congenital anomalies, congenital infections (TORCH)
TORCH
group of infections (transplacental)
toxoplasmosis (cat litter), rubella, CMV, herpesvirus, other viruses and bacteria (syphilis and listeria)
fetal growth restriction due to placental abnormalities
ASYMMETRIC
spares brain
caused by: UTEROPLACENTAL INSUFFICIENCY: umbilical-placental vascular anomalies, plactena abruption, placenta previa, placental thrombosis/infarction, placental infection, multiple gestations
What is a third trimester loss usually due to?
placental insufficiency
fetal growth restriction due to maternal abnormalities
maternal conditions that result in decreased placental blood flow
caused by: vascular disease: PREECMAPSIA, CHRONIC HTN
spontaneous abortion
pregnancy loss before 20 weeks gestation
causes
1. fetal chromosomal anomalies (50% of early loss)
2. maternal endocrine factors
3. physical defects of uterus
4. systemic disorders affecting the maternal vasculature
5. ascending infection
How does an maternal infection cause a fetal inflammatory response?
inflammation of umbilical vessels (vasculitis) and cord substance (funisitis)
Twin-twin transfusion
MONOCHORIONIC
ARTERIOVENOUS SHUNT increases blood flow to one twin
monochorionic
twin placentas have vascular anastomoses that connect the twins’ circulation
decidua
endometrium of uterus in a pregnant woman
Homeobox genes (HLX and DLX3)
expressed in trophoblast and its blood vessels
dysfunctional in preeclampsia
amnion nodosum
nodules seen in placentas effected by oligohydramnios
associated with: stratified squamous metaplasia
due to: renal agenesis
IHC: p57
neg. has relationship to hydatidiform moles
Choriocarcinoma: gross appearance
soft, fleshy, yellow-white tumor with large areas of necrosis and extensive hemorrhage
complications of pre-maturity
- neonatal distress syndrome, hyaline membrane disease
- necrotizing enterocolitis
- sepsis
- intraventricular and germinal matrix hemorrhage
pathology of hyaline membrane disease
- reduced surfactant (increase tension)
- atelectasis (uneven perfusion, hypoventilation)
- hypoxemia and CO2 retention (acidosis, pulmonary vasoconstriction and hypoperfusion)
- endothelial and epithelial damage
- plasma leak into alveoli: fibrin and necrotic cells increase diffusion gradient
fetal hydrops
accumulation of edema fluid in the fetus during intrauterine growth
caused by: CV, chromosomal, fetal anemia (immune (Rh, ABO), ParvoB19, homozygous alpha thalassemia), twin-twin
triple risk model of SIDS
- vulnerable infant
- critical developmental period in homeostatic control
- exogenous stressor (smoking, cockroach, sleeping on belly, overweight, sleep with parents)
progesterone withdrawal test
pos. for bleeding: PCOS
neg. for bleeding: premature ovarian failure
When will the majority of breast cancers metastasize?
by the time you can palpate them: 2-3cm
Most common presentation of breast CA
abnormal mammogram
fibrocystic changes: radial scar
proliferative type: increased risk for invasive carcinoma
lymphocytic mastitis
type of breast inflammation
due to: DM, autoimmune
granulomatous mastitis
type of breast inflammation
Genetic profile of breast CA
- luminal A
- luminal B
- HER2 positive
- Basal type
- ER pos.; HER2 neg.
- ER pos.; HER2 overexpressed
- ER neg.; HER2 overexpressed
- ER and HER2 neg.
Characteristics of breast CA linked to inherited mutations
more likely to be/have
- bilateral
- other CA (ovarian)
- Family Hx
- CA before menopause
- certain ethnicity
BRCA mutation
tumor suppressor genes
breast CA (BOTH alleles must be inactivated)
more common in Ashkenazi Jew
most carriers develop CA by 70
Li-Fraumeni
p53 mutation
Breast CA
Cowden
PTEN mutation
breast CA
ataxia-telangiectasia carriers
breast CA
BRCA1
AD: breast CA, serous ovarian and fallopian tube CA
may interact with p53
strongest predictors :TRIPLE NEG. breast CA, CA before 50 yrs
prophylaxis: mastectomy or follow closely, tamoxifen
increased risk of recurrence after breast conserving Sx
does not affect death rates, but is associated with resistance to certain chemo drugs
MEDUALLARY, DCIS
BRCA2
Breast CA usually CA by 50 higher risk of CA of: OVARY (serous), bone, pharynx, prostate, pancreas more frequent in blacks than whites INVASIVE DUCTAL CA, DCIS
Types of DCIS
- solid
- comedo
- cribiform
- papillary
- micropapillary