Week 1 Flashcards
What is the Graafian follicle?
The dominant of two follicles released each month
- the one which may be fertilised
What are progesterone and oestrogen secreted from?
Progesterone - corpus luteum
Oestrogen - granulosa cells
What s corpus albicans?
Degenerative corpus luteum
Effect of HCG on endometrium
Decidualisation
- endo getting stronger for pregnancy
- maintained by progesterone as well
Features of proliferative phase under microscope
Donut looking proliferations
Mitotically active cells
Features of secretory cells under microscope
Increasing tortuosity of glands and lumenal secretions
Features of menstrual phase under microscope
Endometrial stromal breakdown
Dense round clsters of stomal cells surrounded by inflam cells and blood
Features of decidual change udner microscope
Abundant eosinophilic cytoplasm of stroma
Features of endo atrophy on microscope
INactive low CC cells
Glands detach from stroma to form “hairpin” structures
May be caused by trauma of biopsy
Indications for endo sampling
Abnormal uterine bleeding (e.g. post-menopausal)
Investigation for infertility
Spontaneous and therapeutic abortion
Assessment of response to hormonal therapy
Endometrial ablation
Work up prior to hysterectomy for benign indications
Incidental finding of thickened endometrium on scan
Endometrial cancer screening in high risk patients (e.g. Lynch syndrome)
Causes of abnormal uterine bleding in early repro life/adolescence
DUB usually due to anovulatory cycles
Pregnancy/miscarriage
Endometritis
Bleeding disorders
Causes of AUB in reproductive life
Ado causes PLUS
Cancers (cervical/endometrial)
Endometriosis in myo layer
Exogenous hormone effects
Bleeding disorders
Hyperplasia
Causes of AUB post-meopause
Atrophy
Endometrial polyp
Exogenous hormones: HRT, tamoxifen
Endometritis
Bleeding disorders
Hyperplasia
Carcinoma/sarcoma
How is endometrium sampled?
Hysteroscopy
Endo pipelle
Dilatation and curretage
History aspects path needs for diagnostic sampling
Age
Date of LMP and length of cycle
Pattern of bleeding
Hormones
Recent pregnancy
Do not need to know number of pregnancies, drugs without hormonal influences etc.
Define dysfunctional uterine bleeding
irregular uterine bleeding that reflects a disruption in the normal cyclic pattern of ovulatory hormonal stimulation to the endometrial lining (no organic cause for bleeding)
most commonly due to anovulatory cycles, either end of repro life
Describe endometritis
abnormal pattern of inflammatory cells in endometrium (has oenetrated cervical mucus plug)
caused by e.g. actinomyes, neiserria, HSV, IUDs, post-partum, post-abortion, granulomatous, polyps
PLasma cells in endometrium means?
Chronic plasmacytic endometritis
- Infectious unless proved otherwise
- Associated with PID
Describe complete mole pregnancy
Complete
- Single or two sperm combining with egg that has lost its DNA, sperm reduplicates to form “complete” 46chrom set, only paternal DNA present
- Incr choriocrcnoma risk
Partial
- Egg fertilised by two sperm or one sperm which reduplicates itself causing triploid genotype 69XXY
Describe fibroid/leiomyoma
Benign smooth muscle tumour forming from myoetrium
Growth oestrogen dependent
Interlacing SM cells
Presents w haemorrhagia, infertility, mass effect
Describe features of folicular cysts
Physiological cyst
Form when ovulation doesn’t occur
(polycystic ovaries)
Follicle doesn’t rupture but grows until it becomes a cyst
Several cm, resolve over months
Thin walled, granulosa lining
Describe endometriosis and its presentation
Endometrial glands and stroma outside the uterine body, cycle in the same way as uterine tissue
Presenst with:
- pelvic inflam
- infertility (scarring and obstruction of uterine tube)
- pain
Where do endometrioma form?
– Ovary (‘chocolate’ cyst)
– Pouch of Douglas
– Peritoneal surfaces, including uterus
– Cervix, vulva, vagina
– Bladder, bowel etc
Macro and microscopic features of endo
Macroscopic
Peritoneal spots or nodules
Fibrous adhesions
Chocolate cysts
Microscopic
Endometrial glands and stroma
Haemorrhage, inflammation, fibrosis
Malignancy linked to endometriosis
Endometrioid carcinoma
- can be found outwith uterus
Types of epithelial ovarian tumour
Serous (lines tubes)
Mucinous (epi cells with mucin)
Endometrioid
Clear cell
Brenner (transitional epi, from bladder)
Undifferentiated carcinoma
Can be benign, borderline, malignant
Describe serous carcinoma of ovary
Most common, linked with BRACA mutation
Most originate in tubes
90% high grade, 5% low grade/borderline (with different path)
Describe endometrioid and clear cell carcinoma of ovary
Assoc with ovarian endometriosis and Lynch syndrome
Graded same way as uterine tumurs
Mostly low grade/early stage
Primary diag most often made on ascitic fluid
What key feature makes a neoplasm malignant?
Stromal invasion
- cells break through the basement membrane
Describe Brenner tumour of ovary
A tumour of transitional type epithelium, usually benign,
borderline and malignant variants are rare
Really solid tumour
Round nests of transitional cells
Describe germ cell tumours of ovary
Mostly benign mature cystic teratoma
- containing sebum, teeth, hair, tragus
- rarely malignant, but could get malignancy from tissue within teratoma e.g. SCC skin, thryroid ca
Rarely immature teratoma
- 8 week foetal tissue, really malignant
Others e.g. dysgerminoma (like testis seminoma), yolk sac, choriocarcinoma, mixed
Describe types of sex cord/stromal tumours
Fibroma/Thecoma
- Benign
- May produce oestrogen causing uterine bleeding
Granulosa cell tumour
- All are potentially malignant
- May be associated with oestrogenic manifestations
Sertoli-Leydig cell tumours
- Rare, may produce androgens
Figo staging of ovarian cancer
1A tumour limited to one ovaries
1B tumour limited to both ovaries
1C Cancer involving ovarian surface/
rupture/surgical spill/tumour in washings
2A Extension or implants on uterus/fallopian tube
2B Extension to other pelvic
intraperitoneal
3A Retroperitoneal lymph node
Metastasis or microscopic extrapelvic peritoneal involvement
3B Macroscopic peritoneal metastasis beyond pelvis up to 2cm in dimension
3C Macroscopic peritoneal metastasis >2cm in dimension
4 Distant metastasis
Why is Hb low in ovarian cancer?
Ovarian cancer cells hoard iron causing rest of body anaemia
CRP vs ESR
CRP - acute inflam
ESR - chronic inflam
Apperance of molar pregnancy on US
Snowstorm appearance
3 main abnormal pregnancy types
Miscarriage (normal, in uterus)
Ectopic (outwith uterus)
Molar (abnormal, in uterus)
Causes of early pregnancy bleeding
Implantation bleeding
Sub-chorionic haematoma
Cervical/vaginal causes:
Infection
Malignancy ( important to take a cervical smear history)
Cervical polyp
Types of miscarriage
Threatened Miscarriage
(risk to pregnancy)
Inevitable Miscarriage
(pregnancy can’t be saved)
Incomplete Miscarriage
(part of pregnancy is already expelled)
Complete Miscarriage
(all of pregnancy is expelled, uterus empty)
Early Fetal Demise/Non continuing pregnancy NCP (pregnancy in-situ, no heartbeat, >25 sac diameter, >7 fetal pole)
Anembryonic Pregnancy
(no fetus, empty sac)