Gynaecology Flashcards
What is androgen insensitivity syndrome
X-linked recessive
Cells are unable to respond to androgen hormones due to lack of androgen receptors
- Extra androgens are converted into oestrogen, resulting in female secondary sexual characteristics
- Genetically male (XY) but absent response to testosterone
- Female phenotype externally = normal female external genitalia and breast tissue
- Testes in abdomen or inguinal canal and absence of uterus, upper vagina, cervix, fallopian tubes and ovaries
- Testes produce anti-Mullerian hormone
Presentation of androgen insensitivity syndrome
- Inguinal hernia in infancy containing testes
- Primary amenorrhoea
- Lack of pubic hair, facial hair and male type muscle development
- Taller than female average
- Infertility
Hormone tests for androgen insensitivity syndrome
o Raised LH
o Normal/raised FSH
o Normal/raised testosterone (for male)
o Raised oestrogen levels (for male)
Management of androgen insensitivity syndrome
- MDT approach
- Bilateral orchidectomy
- Oestrogen therapy
- Vaginal dilators/vaginal surgery
- Counselling
Complications of androgen insensitivity syndrome
Testicular cancer
What is Ashermann’s syndrome
- Adhesions form within uterus following damage to uterus
- Endometrial curettage (scraping) can damage basal layer of endometrium
- Adhesions form physical obstructions and distort pelvic organs
Risk factors for Ashermann’s syndrome
- Pregnancy-related dilatation and curettage procedure
- Uterine surgery
- Several pelvic infections (endometritis)
Presentation of Ashermann’s syndrome
- Secondary amenorrhoea
- Significantly lighter periods
- Dysmenorrhoea
- Infertility
Investigations/management of Ashermann’s syndrome
- Hysteroscopy (+ dissection)
Complications of Ashermann’s syndrome
- Menstruation abnormalities
- Infertility
- Recurrent miscarriages
What is atrophic vaginitis
- Epithelial lining of vagina and urinary tract responds to oestrogen by becoming thicker, more elastic and producing secretions.
- As women enter the menopause, oestrogen levels fall, so mucosa becomes thinner, less elastic and more dry
Risk factors for atrophic vaginitis
Menopause = lack of oestrogen
Presentation of atrophic vaginitis
- Itching
- Dryness
- Dyspareunia
- Bleeding due to localised inflammation
- Recurrent UTI
- Stress incontinence
- Pelvic organ prolapse
- Pale mucosa
- Thin skin
- Reduced skin folds
- Erythema and inflammation
- Sparse pubic hair
Management of atrophic vaginitis
- Vaginal lubricants
- Topical oestrogen
o Estriol cream
o Estriol pessaries
o Estradiol tablets (vagifem)
o Estradiol ring (Estring) - Monitored annually
Risk factors for cervical cancer
- Multiple sexual partners
- Early first intercourse
- High parity
- Low SES
- Smoking
- COCP
- HIV/ Immunosuppression
Causes of cervical cancer
HPV 16, 18, 33
Histology of cervical cancer
- Squamous cell carcinoma (most common)
- Adenocarcinoma
Presentation of cervical cancer
- Asymptomatic
- Abnormal vaginal discharge/bleeding = purulent, red/brown
- Dyspareunia
- Post-coital bleeding
- Intermenstrual bleeding
- Late Sx Haematuria, PR bleeding, Urinary/bowel symptoms
- Unusual appearance of cervix
- Bulky masses on bimanual PB
- Hepatosplenomegaly
Screening for cervical cancer
- Cervical smear
o 3 yearly from 25-50
o 5 yearly from 50-64
Investigations for positive smear
- Colposcopy and biopsy Abnormal cells in cervix removed by large loop excision of transformation zone
o Followed by cervical cancer screening test 6m later with HPV test - STI testing
Staging of cervical cancer
- 1a = microscopic intraepithelial tumours
- 1b = confined to cervix
- 2 = spread into upper 2/3rd vagina or parametrium but not pelvic wall
- 3 = spread throughout vagina or to pelvic sidewall
- 4 = involvement of bladder, rectum or distant sites
Management of cervical cancer
- CIN treatment
o CIN1 = spontaneous regression within 2yrs
o CIN2/3 = LLETZ
o CGIN = LLETZ or cone biopsy - Hysterectomy and lymph node clearance (GS)
Risk factors for ovarian cancer
- BRCA1/2 (FHx)
- Early menarche, late menopause
- Oestrogen HRT
- Nulliparity
- Smoking
- Obesity
- Clomifene
- Hysterectomy
Protective factors for ovarian cancer
OCP, pregnancy, lactation