10/14/2026
It's been a while since I have shared anything. Also personal post coming soon
Endometriosis lesions, age and colour: colour is not a clock! 🔬🩺🎨
GENTLE REMINDER: I’m a husband learning alongside my wife, who lives with stage IV endo, adeno, and fibro. This is not medical advice but my own research and a wish to understand. THANK YOU! 💛
If you imagine endometriosis lesions as always being dark brown or black spots, you may be surprised to learn how many different appearances the disease can have. Endometriosis can be red, clear, pale pink, brown, blue-black, white, fibrotic, puckered or mixed in appearance.
That matters because subtle disease can be easier to miss.
But there is another idea I want to correct carefully: lesion colour is NOT a reliable clock that tells you exactly how old the endometriosis is.
Historically, researchers observed patterns suggesting that lesion appearance may change over time. Red or vascular lesions were sometimes described as earlier or more active, darker lesions as representing blood breakdown and pigment, and white fibrotic lesions as older scarred disease.
There is some biological reasoning behind those observations.
But real endometriosis is much messier than a neat colour timeline.
Studies examining lesions of different colours have found substantial overlap in biological activity and hormone receptor expression. Colour appears to reflect several things, including gland contents, bleeding products, blood vessels, fibrosis and the surrounding stromal response.
So you cannot reliably look at one lesion and say:
“That is red, therefore it is exactly six months old.”
Or:
“That lesion is white, therefore it is inactive.”
Or:
“Black lesions must hurt the most.”
The evidence does not support that level of certainty.
Endometriosis can appear as:
• clear or subtle vesicles
• pale pink lesions
• bright red or highly vascular areas
• deep red lesions
• brown lesions
• blue-black or dark lesions
• white or opaque lesions
• fibrotic or puckered tissue
• mixed-colour lesions within the same pelvis
Each appearance can represent different combinations of tissue, pigment, bleeding, vascularity and fibrosis.
Red or vascular lesions may contain a rich capillary network and active endometrial-type glands, but their colour alone does not tell you exactly how painful or clinically important they are.
Dark brown or black lesions may contain old blood breakdown products and haemosiderin pigment.
White lesions can be collagen-rich and fibrotic, sometimes causing puckering and tethering of the peritoneal surface.
Clear lesions can be subtle enough to blend into otherwise normal-looking peritoneum.
That last point is important because disease does not have to look dramatic to exist.
A tiny clear lesion can be easy to overlook.
A pale fibrotic area may not look like the classic black “powder burn” lesion many people associate with endometriosis.
Experience and careful inspection matter.
One fascinating study looking at pain responses during patient-assisted laparoscopy found that pain had little consistent relationship with lesion colour. Pain could even extend beyond the visibly abnormal lesion into surrounding normal-looking peritoneum.
That does not mean appearance is useless.
It means appearance cannot tell the whole pain story.
Pain depends on much more than colour.
Nerves.
Inflammation.
Location.
Fibrosis.
Adhesions.
Muscle guarding.
Sensitisation.
Nearby organs.
Your individual nervous system.
This helps explain something women are constantly forced to defend: visible disease burden and lived pain are not the same measurement.
A pelvis with only subtle-looking lesions can still hurt.
A dramatic-looking lesion may not necessarily be the most painful structure.
Colour is therefore useful for recognising different manifestations of disease, but it should not become another tool for ranking whose endometriosis is “real enough.”
Fibrosis deserves particular attention.
When tissue repeatedly responds to inflammation and injury, collagen-rich scar-like tissue can develop. Fibrotic disease may tether structures together, reduce normal movement and contribute to mechanical pulling pain.
A pale or white lesion can therefore matter even though it lacks the dark pigment many people expect endometriosis to have.
Imagine two pelvic surfaces that should glide over one another becoming connected by stiff fibrotic tissue. Now imagine the bowel filling, the bladder expanding or your body bending.
Movement in one structure can tug on another.
That can hurt regardless of what colour the fibrosis looks under a laparoscope.
Here is what can help when you read a surgical report or see photographs from laparoscopy.
Do not focus only on lesion colour.
Ask:
• Where was disease found?
• Was it superficial or deep?
• Was fibrosis present?
• Were adhesions found?
• Were organs stuck together?
• Was pathology taken?
• Which lesions were confirmed as endometriosis?
• Were any suspicious areas left because removal was unsafe?
• Were bowel, bladder, ureters or nerves involved?
Those questions tell you much more about the anatomical picture.
Histology can also matter because visual appearance alone is not perfect. Surgeons identify lesions based on experience and anatomy, while pathology examines removed tissue microscopically.
Even then, diagnosis and treatment decisions involve the whole clinical context.
I also want to mention something subtle that can happen emotionally after surgery.
You are shown photographs.
Maybe the disease looks tiny.
Maybe it is pale.
Maybe there are only a few visible spots.
And immediately you think, “Is THAT all? How could something so small cause this much pain?”
Please remember that a photograph captures appearance.
It does not capture nerves firing.
It does not show your muscle guarding.
It does not show how many nights you could not sleep.
It does not measure bowel pain.
It does not show the way fibrosis pulls when you move.
It does not measure what chronic pain has done to your nervous system.
Your suffering does not have to look dramatic in a photograph to count.
As my wife’s husband, I think one of the cruellest parts of chronic illness is how often women end up searching for visual proof impressive enough to justify what they feel.
You should not have to.
Medical images are useful.
Pathology is useful.
Surgical findings matter.
But none of them turns your lived experience into a competition.
This does not mean every subtle patch is endometriosis. Many normal tissues and other conditions can look unusual, which is why surgical expertise and pathology matter.
It simply means the disease has more appearances than the classic pictures most of us were first shown.
You deserve to understand what is happening in your body without being told that lesion colour can precisely tell somebody how old, active or painful your disease is.
Save this if you have ever looked at surgical photographs and wondered why your lesions did not resemble the pictures you found online. Share this with a woman who needs to know that endometriosis can be clear, red, brown, black, white, fibrotic or mixed, and that appearance alone does not measure her pain.
If medical images have ever made you question whether your disease looks “serious enough” to explain your life, my FREE 130+ page eBook “You Did Nothing To Deserve This!” was written to remind you that validation does not depend on having the most dramatic surgical photograph. Tap the link in my profile or bio for your free copy. The physical paperback is also available on Amazon; type “endometriosis validation” into Amazon’s search tab.
Lucjan 🎗
