Patient education
Cesarean scar defect (niche)
A cesarean scar defect is a small indentation at the previous cesarean scar within the uterus. It can be linked to post-period spotting, prolonged light bleeding, and selected fertility concerns.
Quick definition
Not all scar defects need intervention. Management depends on symptoms, imaging findings, and fertility goals.
If symptoms are changing or persistent, structured assessment helps avoid missed diagnoses and unnecessary delay.
What it is
A niche is a scar recess at a prior cesarean site. Blood can collect and empty slowly, causing lingering spotting after periods.
Symptoms and bleeding patterns
- Post-menstrual spotting that drags on
- Brown staining after periods
- Sometimes pelvic discomfort or fertility concerns
How it is diagnosed
Step 1
Bleeding pattern review
Focus on timing relative to period end.
Step 2
Targeted ultrasound
Assesses scar contour and residual myometrium.
Step 3
Exclude overlap causes
Polyps, adenomyosis, and hormonal patterns can coexist.
Step 4
Plan by symptoms/goals
Observation, medical, or procedural options as appropriate.
Treatment options
Conservative / medical
Selected hormonal options can reduce spotting in some patients.
Hysteroscopic correction (selected)
Considered when pattern and anatomy suggest likely benefit.
Common questions
Frequently asked questions
Does every cesarean scar defect cause symptoms?
No. Some are incidental and need no intervention.
Can a niche cause prolonged spotting?
Yes, delayed emptying of blood can produce post-period spotting.
Is surgery always required?
No. Treatment depends on symptom burden and fertility priorities.
Can this overlap with other causes of bleeding?
Yes. Structural and hormonal causes can coexist and are assessed together.
Still unsure? We can map your symptoms to the right pathway and agree on practical next steps.