Diagnosis

Endometriosis diagnosis: why it takes 7 years — and how to shorten it

The average British woman waits 7–8 years for an endometriosis diagnosis. Understanding why closes the gap by years.

Op. Dr. Berra Önsoy — Consultant Obstetrician & Gynaecologist
Medically written & reviewed by
Op. Dr. Berra Önsoy · Consultant Obstetrician & Gynaecologist
Istanbul, Turkey · 29 years of clinical practice · 8 min read · Consults in English & Turkish

Istanbul University Cerrahpaşa (English) MD, 1997. Ob-Gyn residency at Taksim Training & Research Hospital (2001). Private practice in Istanbul focused on endometriosis, myoma surgery, high-risk pregnancy and aesthetic gynaecology.

Clinical focus
  • Endometriosis surgery
  • Myoma (fibroid) surgery
  • High-risk pregnancy
  • Aesthetic gynaecology
  • HPV & colposcopy
Last medically reviewed: 15 January 2026View full clinical credentials·Verify on:drberraonsoy.cominstagram.com
Key takeaways
  • Standard ultrasound misses most superficial endometriosis.
  • Specialist ultrasound + MRI define surgical planning.
  • Laparoscopy remains the gold standard for confirmation and treatment.

Why diagnosis is so delayed

Symptoms are normalised ("periods are meant to hurt"), pain is often treated with the pill without further investigation, and superficial disease is invisible on standard ultrasound. Many women see 4–6 clinicians before an endometriosis specialist is involved.

The imaging that actually helps

A specialist transvaginal ultrasound performed by a gynaecologist trained in endometriosis mapping can detect endometriomas, deep infiltrating disease of the bowel or bladder, and adhesions. Where deep disease is suspected, pelvic MRI with rectal contrast further defines the extent. Neither imaging modality reliably picks up superficial (peritoneal) disease — laparoscopy remains the gold-standard confirmation.

When a second opinion is worth it

If you have had symptoms for over a year, been told your scan is normal, and are being managed with hormones alone, a specialist second opinion is reasonable. In the UK, BSGE-accredited endometriosis centres and specialist private clinics offer this. In Istanbul, a full workup — specialist scan, MRI, consultation and surgical plan — can be completed in 2–3 days.

Frequently asked questions

Do I need laparoscopy to confirm the diagnosis?

For definitive confirmation, yes. However, if imaging shows clear endometriomas or deep disease, treatment can often proceed without a purely diagnostic laparoscopy.

Can blood tests diagnose endometriosis?

No. CA-125 is not reliable for endometriosis; new biomarkers are being researched but are not yet clinical.

Is MRI better than ultrasound?

For deep infiltrating disease, yes. For endometriomas alone, expert ultrasound is often sufficient.

Could a doctor-led plan help you?

A 30-minute video consultation with Dr Berra Önsoy — reviewing your symptoms and imaging and giving you a clear personalised plan for endometriosis surgery.

Request a video consultation

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