๐งฌ Ovarian cancer arises from the ovaries and is primarily classified into three groups: epithelial tumours, stromal tumours, and germ cell tumours.
๐ธ Epithelial ovarian cancer (EOC) is the most common type, accounting for ~90% of cases.
โ ๏ธ Pathogenesis often involves mutations in BRCA1, BRCA2, and tumour suppressor genes (e.g. p53).
It is often diagnosed late due to vague early symptoms, contributing to high mortality.
๐ About
- โ ๏ธ Ovarian cancer is the leading cause of gynaecological cancer death, ~8% of all female cancers.
- โฌ๏ธ Incidence is reduced with long-term use of the contraceptive pill.
๐ฌ Aetiology / Risk Factors
- ๐ฉโ๐ฉโ๐ง Family history of ovarian or breast cancer.
- ๐งฌ Inherited gene mutations (BRCA1/2, Lynch syndrome).
- ๐ต Increasing age โ most common in postmenopausal women.
- ๐ถ Reproductive history โ nulliparity, infertility, early menarche, late menopause increase risk.
- ๐ Hormone replacement therapy (HRT).
- โ๏ธ Obesity and endometriosis (weaker association).
๐งฉ Clinical Features
- ๐ช๏ธ Non-specific abdominal symptoms: bloating, distension, pelvic pain.
- ๐ฝ Urinary symptoms: urgency, frequency, incontinence.
- ๐ฝ๏ธ Early satiety, loss of appetite.
- โ๏ธ Unexplained weight loss, fatigue, bowel habit changes.
- โฑ๏ธ Diagnosis often delayed โ many present at advanced stage.
๐งพ Differential Diagnosis
- IBS (rare new-onset >50 yrs).
- Other pelvic masses (benign ovarian cysts, fibroids).
- GI malignancies (colon, stomach).
- Ascites from cirrhosis or heart failure.
๐ Investigations
- ๐งช Bloods: FBC, ESR (anaemia), LFTs.
In women <40 yrs: also check AFP & ฮฒ-hCG (exclude germ cell tumours).
Measure CA-125: if โฅ35 IU/ml โ arrange urgent pelvic & abdominal ultrasound.
- ๐ฉโโ๏ธ Pelvic Examination: First step in evaluating symptoms.
- ๐ฅ๏ธ Transvaginal ultrasound: Detects ovarian mass, solid/cystic changes.
- ๐งฌ CA-125: Raised in many EOC cases (false positives in menstruation, endometriosis).
- ๐งฒ CT/MRI: Staging, metastatic spread.
- ๐ฌ Histology: Definitive diagnosis from biopsy (or cytology if biopsy not feasible).
โก๏ธ Always obtain tissue diagnosis before chemotherapy unless exceptional circumstances.
๐ FIGO Staging (International Federation of Gynaecology & Obstetrics)
| Stage |
Description |
| I | Cancer confined to one/both ovaries. |
| II | Spread to pelvis (uterus, tubes, bladder, rectum). |
| III | Spread within abdominal cavity ยฑ retroperitoneal nodes. |
| IV | Distant metastasis (e.g. lung, liver parenchyma). |
๐ Management
- ๐ช Surgery: Staging laparotomy, total abdominal hysterectomy + bilateral salpingo-oophorectomy (TAH-BSO), and tumour debulking.
- ๐ Chemotherapy: Platinum-based regimens (carboplatin ยฑ paclitaxel) are standard.
Given every 3 weeks for 6 cycles; weekly dosing protocols increasingly used for tolerance.
- ๐ฏ Targeted therapy: PARP inhibitors (e.g. olaparib) for BRCA mutation carriers; bevacizumab (anti-VEGF) in some advanced cases.
- โข๏ธ Radiotherapy: Rarely used, reserved for palliation of local disease.
- ๐งช Immunotherapy: Under research; checkpoint inhibitors being trialled.
โ ๏ธ Key Clinical Notes
๐ Ovarian cancer is called the โsilent killerโ due to vague early symptoms.
๐ฉโโ๏ธ NICE recommends urgent CA-125 and ultrasound for women โฅ50 with persistent bloating, abdominal pain, or early satiety.
๐งฌ Genetic counselling and BRCA testing should be offered to women with strong family history.