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Reproduction > Cervical Screening / Vulval Pathology > Flashcards

Cervical Screening / Vulval Pathology Flashcards

1
Q

identify the cells present within normal ectocervix?

A
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2
Q

what does the endocervix normally look like histologically?

A
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3
Q

what is the transformation zone and which physiological changes causes the altering of position of TZ during life?

A

squamo-columnar junction between ectocervical (squamous) and endocervical (columnar) epithelia

position of TZ alters in response to menarche, pregnancy and menopause

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4
Q

what does the squamo-columnar junction look like histologically?

A
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5
Q

what is cervical erosion?

A

the exposure of delicate endocervical epithelium to acid environment of vagina leads to physiological squamous metaplasia

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6
Q

what are nabothian follicles?

A

mucous filled cyst on surface of cervix - formed when stratified squamous epithelium of ectocervix (nearest vagina) grows over columnar epithelium of endocervix (portion nearest to uterus)

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7
Q

what are the symptoms and causes of cervicitis?

A

often asymptomatic but can lead to infertility due to simultaneous sildent fallopian tube damage

causes - non specific inflammation, follicular cervicitis (sub epithelial reactive lymphoid follicles present in cervix), chlamydia and HSV

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8
Q

what is a cervical polyp and what is the main symptom?

A

localised inflammatory outgrowth (not premalignant)

cause of bleeding, if ulcerated

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9
Q

what are the different neoplastic causes of cervical pathology?

A

cervical intraepithelial neoplasia (CIN)

cervical cancer = squamous carcinoma, adenocarcinoma

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10
Q

what are the risk factors for CIN / cervical cancer?

A

high risk HPV esp 16 and 18 (sexual partners may increase risk)

vulnerability of SC junction in early reproductive lise - age at first intercourse, long term use of OCP, non use of barrier contraception

smoking - 3x risk

immunosuppression

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11
Q

what strains of HPV causes genital warts and what does this look like histologically?

A

HPV 6 and 11

condyloma acuminatum = thickened “papillomatous” squamous epithelium with cytoplasmic vacuolation (koliocytosis)

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12
Q

what strains of HPV causes cervical intraepithelial neoplasia (CIN) and what does this look like histologically?

A

HPV 16 and 18

infected epithelium remains flat, but may show koilocytosis, which can be detected in cervical smears

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13
Q

what does cervical cancer look like histologically?

A

invasive squamous carcinoma - virus integrated into host DNA

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14
Q

how long does it take for HPV infection to progress to high grade CIN?

A

6 months - 3 years

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15
Q

how long does it take for high grade CIN to become invasive cancer?

A

5-20 years

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16
Q

what does mild dyskaryosis with viral features (HPV) look like?

A
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17
Q

what is cervical intraepithelial neoplasia (CIN) and where does it occur?

A

pre-invasive stage of cervical cancer - dysplasia of squamous cells which is not visible by naked eye and is asymptomatic

occurs at transformation zone

detected by cervical screening

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18
Q

describe the progressive degrees of dysplasia and neoplasia of cervix?

A

normal squamous epithelium -> koilocytosis -> CIN1 -> CIN2 -> CIN3

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19
Q

describe the general histology of CIN?

A

delay in maturation / differentiation (immature basal cells occupying more of epithelium)

nuclear abnormalities (hyperchromasia, increased nucleocytoplasmic ratio, pleomorphism)

excess mitotic activity (situated above basal layers, abnormal mitotic forms)

often koilocytosis (indicating HPV) also present, CIN is graded I-III

20
Q

descrbe the histology of CIN I?

A

basal 1/3 of epithelium occupied by abnormal cells

*raised numbers of mitotic figures in lower 1/3

*surface cells quite mature, but nuclei slightly abormal

21
Q

describe the histology of CIN II?

A

abnormal cells extend to middle 1/3

*mitoses in middle 1/3

*abnormal mitotic figures

22
Q

describe the histology of CIN III?

A

abnormal cells occupy full thicknes of epithelium

*mitoses, often abnormal, in upper 1/3

23
Q

75-95% of malignant cervical tumours are what kind?

A

invasive squamous carcinoma (2nd most common female cancer worldwide)

*develops from CIN - preventable by screening

24
Q

what are the different stages of invasive squamous carcinoma?

A

stage 1A1 - depth up to 3mm, width up to 7mm

stage 1A2 - depth up to 5mm, width up to 7mm (low risk of lymph node metastases)

stage 1B - confined to the cervix

stage 2 - spread to adjacent organs (vagina, uterus, etc)

stage 3 - involvement of pelvic wall

stage 4 - distant metastases or involvement of rectum or bladder

25
Q

what are the symptoms of invasive cervical carcinoma?

A

abnormal bleeding - post coital, post menopausal, brownish or blood stained vaginal discharge, contact bleeding (friable epithelium)

pelvic pain

haematuria / urinary infections

ureteric obstruction / renal failure

26
Q

describe the spread of cervical squamous carcinoma?

A

local = uterine body, vagina, bladder, ureters, rectum

lymphatic = early = pelvic, para-arotic nodes

haematogenous = late = liver, lungs, bone

27
Q

how is cervical squamous carcinoma graded?

A

well differentiated

moderately differentiated

poorly differentiated

undifferentiated / anaplastic

28
Q

where do cervical glandular intraepithelial neoplasia (CGIN) arise from and what is it the preinvasive phase of?

A

arise from endocervical epithelium

CGIN is preinvasive phase of endocervical adenocarcinoma

29
Q

what is the difference in ease of diagnosis of CIN vs CGIN?

A

CGIN is more difficult to diagnose on cervical smear than squamous carcinoma

therefore, screening less effective

30
Q

what does high grade CGIN look like histologically?

A
31
Q

endocervical adenocarcinoma makes up what % of cervical cancer?

A

5-25%

*iincreasing incidence, particularly in young women

32
Q

some cervical cancer are mixed type (adenosquamous) which arise from common cell of origin - true or false?

A

true

33
Q

what has a worse prognosis - endocervical adenocarcinoma or squamous carcinoma?

A

cervical adenocarcinoma

34
Q

in which people is adenocarcinoma more common?

A

higher SE class

later onset of sexual activity

smoking

HPV again incriminated, particularly HPV18

35
Q

what does adenocarcinoma look like histologically?

A
36
Q

name 3 other HPV-driven diseases?

A

vulvular intraepithelial neoplasia, VIN

vaginal intraepithelial neoplasia, VaIN

anal intraepithelial neoplasia, AIN

37
Q

what disease is vulval intraepithelial neoplasia associated with?

A

pagets disease

*crusting rash, tumour cells in epidermis which contain mucin

*mostly no underlying cancer, tumour arises from sweat gland in skin

38
Q

in older women, VIN causes greater risk of progression to what?

A

invasive squamous carcinoma

39
Q

VIN is always HPV related - true or false?

A

false - often HPV related but not always

40
Q

who does vulvar invasive squamous carcinoma arise in and how does it present?

A

elderly women

ulcer or exophytic mass

41
Q

how does vulvar invasive squamous carcinoma arise?

A

from normal epithelium or VIN

*they are mostly well differentiated (verrucous are an extremely well differentiated type)

42
Q

what is the treatment of vulvar invasive squamous carcinoma?

A

surgical - radical vulvectomy and inguinal lymphadenectomy

*90% 5 year survival - node negative

*<60% 5 year survival - node positive

43
Q

what infections can cause vulval disease?

A

candida (particularly diabetics)

vulvar warts (HPV 6 and 11)

bartholin’s gland abscess (blockage of gland duct)

44
Q

what non neoplastic epithelial disorders can cause vulval disease?

A

lichen sclerosis

other dermatoses - lichen planus, psoriasis

45
Q

what causes atrophic vulval diseases?

A

post-menopausal

46
Q

name 3 types of vaginal pathology?

A

VaIN - vaginal intraepithelial neoplasia - may also have cervical and vulval lesions

squamous carcinoma - less common than cervical and vulval counterparts, a disease of elderly

melanoma - rare, may appear as a polyp

Reproduction (45 decks)

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