C-Section Scar Endometriosis — Painful Nodule After Caesarean

📊 Key Facts at a Glance

• 80–95% of patients pain-free or significantly improved
• 30–40 minute procedure, day case
• Return to normal activity in 5–7 days

📖 What is C-section scar endometriosis?

If you have a painful lump in or near your caesarean scar that becomes more painful with your periods — this is almost certainly C-section scar endometriosis (also called parietal or abdominal wall endometriosis).

During caesarean section, endometrial cells can implant in the scar and grow cyclically under hormonal influence, forming a nodule that swells and hurts with each menstrual cycle. It typically appears 1–3 years after the caesarean and will not resolve spontaneously.

🎯 Recognise the symptoms

• A firm, tender lump in the C-section scar — visible or palpable
• Pain that worsens during and around your period — the hallmark sign
• Sometimes swelling or bruising of the scar during menstruation
• The pain does not improve with time — it typically worsens over years
• Confirmed by MRI (T1-hyperintense nodule) or ultrasound

🔧 Treatment: cryoablation at Cochin AP-HP

Cochin AP-HP is one of the pioneering centres worldwide for cryoablation of C-section scar endometriosis — one of the largest and most experienced teams globally for this technique. Under CT guidance, a cryoprobe is inserted through the skin directly into the nodule. Freeze–thaw cycles at −40°C destroy the nodule without any incision. 80–95% of patients are pain-free or significantly improved.

Performed under general anaesthesia (30–40 min), as a day case. No scar. No additional incision. Return to normal activity in 5–7 days.

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