Pathologist on Mesh Explant Findings

//Pathologist on Mesh Explant Findings

Pathologist on Mesh Explant Findings

Dr. Vladimir Iakovlev, Pathologist

Mesh Medical Device News Desk, December 7, 2017 ~ Dr Vladimir Iakovlev is an Associate Professor of Laboratory Medicine and Pathobiology, University of Toronto; Director of Cytopathology, St. Michael’s Hospital, Toronto, Canada.

He has examined over 50o specimens of mesh explants, taken from patients experiencing complications associated with both hernia and pelvic mesh.

Pathologists examine the tissue around the device and play the role of detective to determine a cause of death. He is being called into advise the coroner in the recent death of a 42-year-old Windsor, Ontario woman, who suffered complications from a TVT Exact mesh implant. Dr. Iakovlev will advise which tissues will need to be sampled.

At this time, there is no official cause of death specifically related to mesh infections.  Often sepsis is listed as a cause of death, or an uncontrollable blood bacterial infection, but the cause of sepsis is not identified.

Mesh News Desk interviewed Dr. Iakovlev about the steps he takes in his detective work.

Laparoscopic photos B. Rosenberg Prolene hernia system eroded

Q: What do you find in the body near a mesh implant?

A: “There is a degree of complexity. Based on the pathologists’ knowledge we’ve accumulated over 200 years about changes involving any foreign body.  There is an inflammatory reaction as the body recognizes the foreign body is harmful. It wants to get rid of it, digest or expel it. The first reaction is an inflammatory reaction.

“Since any surgery makes a surgical pocket, the space is filled with fluid. The same thing happens around implants. This clotted fluid forms the mold for future tissue to form granulation tissue, which matures to scar tissue.  If a foreign body cannot be destroyed, the body tries to isolate it. It makes a fibrous capsule which is the same as scarring.

“Mesh is porous and scar forms inside and outside the mesh.

“We need to remember that our soft tissues heal by laying scar tissue. Mesh cannot be integrated by normal tissue in humans. There is also foreign body inflammation which damages tissue and is a stimulus for further fibrosis or scarring.

“The problem with meshes is that the porous ones have scar tissue inside the pores. As granulation tissue matures into scar it can pull the mesh fibers together and the entire mesh shrinks.  The main problem with scarring and inflammation is mesh shrinkage.

Mesh explant, St. Michael’s Hospital, CTV Mesh Misery

“Nerves can grow into and around the mesh. This tells us that the tissue can sense what is going on. As any innervated tissue it can feel pain too. Also, those nerves that grow into the mesh can get trapped and deformed there. Nerves can be effected by migration as well when the mesh moves.

“We know mesh doesn’t stay stationary, it can migrate, fold or bunch up. The tissues around mesh are not strong enough to hold it. In some people it is just millimeters, in some centimeters. We know that even implants and nails in the bones can still slowly migrate.

“Some mesh migrates through the spermatic cord inside the groin. In the pelvis, meshes can migrate or erode internally into the bladder or rectal wall.

“It can deform, fold and bunch up. It can happen during, right after, or many months and years after surgery. Tissues in the vaginal wall have elastic and muscle fibers so they can contract and expand. In mesh, once it’s folded it’s folded and stays folded. There is no mechanism to stretch it back.”


Q: What about the role of biofilms in harboring infection?

A: “Biofilm is a loose term. People can mean different things using it. They may mean coat of bacteria or proteins. Generally, we don’t have to reinvent the bicycle. Foreign bodies have been known forever as a potential source or reservoir for infection. The surface and some small spaces in the implants can harbor bacteria. That is why we try to remove all bullets, splinters and dead tissues.

“As I mentioned foreign body type inflammation and other standard pathological processes related to foreign bodies have been known for a long time, some over 100 years. For example, foreign body reaction studies are from the late 1800s. Look at Russian scientist Eli Metchnikoff in Paris, who gave the first description of these immune responses.

“Any foreign object can provide shelter for bacteria. For bacteria, it’s difficult to survive on native tissues because they are protected by the immune system.  But a foreign object provides shelter for bacteria. That’s been known for a long, long time.

“We get the bullet out because it may get infected. We get rid of all dead tissue and the foreign object to clear up an infection.

“Even if bone fragments go necrotic, due to insufficient blood supply, it can become infected.”


Prolene mesh

Q: Does it depend on the mesh?

A: “Yes. Some mesh types can harbor more infections and limit ability of immune system to kill the bacteria. The microporous meshes have small pores where the bacteria can get stuck.

“Neutrophils, a type of immune cell, cannot move well and kill bacteria. Multifilament or braided meshes are in that category. However, generally all meshes can contain infection, it is just some have higher risk and some lower.”


Dr. Vladimir Iakovlev showoing mesh eroding through the bladder, CTV Mesh Misery

Q: What do tissues tell you about mesh-related cause of death?

A: “When doing an autopsy, and I’ve done a number of them, we can answer several questions. One is immediate cause of death. Also we can collect information which can be used to answer other questions.

“Doing an autopsy one needs to be thorough and approach with open mind.  Examine entire body and all organs, heart, brain, lungs, kidneys. Collect all information and tissue samples for later microscopy. Look for changes and sample more tissue in areas that are affected by a disease, previous surgery etc. Then all information comes together from history, gross findings, microscopy and toxicology.

“One would need to look at the chart information, check previous blood tests. Autopsy may or may not show answers for all questions. Generally, if we focus on chronic infection, whether it is related or not to the immediate cause of death, it can be of different sources including urosepsis. A cause of it can be recurrent UTI spikes, or something in the kidney, bladder or elsewhere in the genitourinary system that leads to recurrent infection.

“In any death there is the immediate cause of death then there are the background conditions. Sometimes it is more complicated than seems.

“For example, if during an argument a person punched in face and falls from stairs, sustains trauma but also is found to have a heart disease at autopsy. The injury itself was substantial but not likely not lethal on its own. Also without the incident he likely would not have a heart attack at the time. So, did he die from the punch and fall or natural causes such as a heart condition? It’s not black and white sometimes.

“I know little more about meshes, where they are placed and changes that can be there. In this case I’m not the official person doing the autopsy, I was only asked to share my knowledge in this specific field, what tissue can be preserved.  Autopsy is done by the coroner’s office and they will do their assessment.”


Macrophages at work, Stonybrook Medicine

Q: In your experience what have you seen at mesh sites?

A: “Pathology has drifted from autopsies to now surgical specimens. Every lump is being biopsied. Biopsies and excisions are overwhelmingly higher in volume than autopsies. Regular pathologists mainly look at biopsies and excised tissues.

“Similarly, all removed implants come to pathologists. Then it depends on a pathologists’ knowledge and experience how much they can describe. We see scarring or fibrosis, we see foreign body type inflammation, we see nerves and sometimes small parts of other organs. If mesh is infected we see neutrophils. It is hard to see bacteria if they are in small numbers, but neutrophils that come to kill the bacteria are easier to see.

(More on neutrophils here, which help fight infection by ingesting microorganisms.  Microphage/ Macrophage – present in the blood that migrates to tissue in the inflammatory immune response. See the human immune system here. )

“All of these changes are well known.  There are only few issues that need to be studied. For example, leachables from plastics can have some effect. That has to be studies. As far as I know we do not know exactly what can leach from plastics and what are the effects of these substances on our tissues.

“I read articles that some plasticizers and other chemicals leaching from the labware can have effect on cell cultures in laboratory experiments. See more here and here.

“The substances also appear to leach from plastic syringes into the fluid that contain, if they are stored for a long time.  Some patients feel a stale, metallic or plastic taste in the mouth after injections, when compared to a freshly filled syringe.”


 MND, What’s Added to Plastic Mesh, March 7, 2017

CTV, Mesh Misery


By | 2018-01-19T21:42:13+00:00 December 7th, 2017|Medical News|16 Comments

About the Author:

I’m National News Editor, Jane Akre and I began Mesh Medical Device News Desk aka Mesh News Desk (MND) in the summer of 2011 just after the Food and Drug Administration issued an explicit warning to the public that complications associated with surgical mesh used for prolapse repair (POP) and incontinence (SUI) are NOT rare! That was the starting point for the litigation you see today and thousands of lawsuits have been filed by women whose lives have been altered, some permanently, by the use of this petroleum-based product.


  1. M L W Atkins December 8, 2017 at 7:45 pm - Reply

    While it is true that I have had many, many kidney and bladder infections since the mesh. More than I can count or even care to remember. I am also experiencing digestive issues including diverticulitis and pre-cancerous polyps. I’m not even 50 years old yet.
    I do have vaginal and lower abdominal pain but I ache pretty much all over my body. I’ve already had to quit working because I never know when I’m going to have a really, really bad day and can’t go into work. Employers are not all that understanding. It is getting to the point even doing simple house work takes everything out of me. Can mesh cause more than vaginal and lower abdominal pain and lack of a sexual relationship with my husband?

    • Teresa B December 11, 2017 at 8:33 am - Reply

      Yes, mesh affected my entire body. I had severe infection for 4 years until I got everything removed. I am better but will always suffer from nerve damage. Call Dr Vironikis and schedule an appointment. He will answer all of your questions. God bless you, Teresa

  2. Leo Valdez December 9, 2017 at 11:55 pm - Reply

    I had a double inguinal hernia repair done, and the following day after the procedure, I called the Surgeon and told him something wasn’t right!!! That I was in a lot of pain, and that my insides felt out of place, and that I couldn’t have a normal bowel movement!!! I’ve been suffering for 5 years and 9 months!!! And it’s only getting worse!!! And I’ve under gone numerous other tests like colonoscopies and I’ve gone to see urologist’s and I kept telling them it was the mesh that was bringing all this on!!! The pain and the disfunction with my bowel movements and urination!!! And after the mesh was implemented in me, I’ve never been able to have sex again!!! My make part is deformed!!! And if I get an erection, the pain is unbearable!!! So I hope and pray that all of us victims of all these money hungry Surgeons that insist on using this poisoness mesh in us, will pay, and that we will get some justice!!!! I’m also not able to work!!! I can barely get to the grocery store!!! Much less sit in a chair and cleans my patients teeth!!! I have to be laying down most of the time!!! I have to somehow try to push my insides because it feels as if the mesh has shrunk and rolled up into a ball.!!! The pain is horrific and the discomfort is so, that I feel as if I’m going to go crazy from it!!! Thank you for listening to me!!! It helps when I put in to words what it is I’m going through!!! ????

    • LB December 13, 2017 at 11:09 am - Reply

      I have been thru what you are experiencing. Doctor denial of symptoms all where real. I finally had to go to a doctor out of network and pay him to remove the mesh. Dr Kevin Petersen in Las Vegas nv. I had mine in for eight years I still have pain but no where near what it was. No insurance surgery is the website. Don’t give up you aren’t crazy. Good luck LB

  3. Francine W December 11, 2017 at 11:55 am - Reply

    In 2014 had small incisional abdominal hernia repaired with Bard plug mesh. 6 months later inflammation pain got worse over time. Having bowel movements and urinating makes it worse. Had mesh removed in 2016. Still in excruciating pain. Taking 5 mgs of dilaudid 4 times a day. Pain is so bad. This has ruined my life…I believe I am dealing with biofilm…When will it end and the medical and government get it. Mesh kills. Please we are begging for our lives or help…

    • Jane Akre December 11, 2017 at 1:28 pm - Reply

      Francine- You need medical help… Can you contact Bruce Rosenberg, a patient advocate. Please text him at 954-701-5094… thats the best way to get his ear.

      • Cher January 6, 2018 at 11:07 am - Reply

        Can this name help,advocate for me as Cleve Clinic wont write immune issues caused by mesh which really messes up my law suit. since mesh 18meds 4 dme and loss of teeth atty needs the immune factor on paper

      • Michele January 14, 2018 at 12:38 am - Reply

        Hi,. I was implemented pp mesh. I have been suffering. I have nuropathic pain whole the body. I want to remove it.
        Can you help me,?
        What is the mail of Bruce?

        • Jane Akre January 14, 2018 at 4:30 pm - Reply

          Are you a hernia mesh or pelvic mesh? Bruce is a hernia mesh patient advocate…. 954-701-5094. It is best to text him, but he doesn’t know about tvm…..

  4. daniees S December 11, 2017 at 4:09 pm - Reply

    When I had the first revision surgery to excise the mesh which was shocking the urethra the Dr couldn’t removed it … about 2 weeks later I started having high fever and developed an abscess about 1/2 the size of an egg inside my vagina!!!

    • Jane Akre December 11, 2017 at 5:21 pm - Reply

      Many doctors have difficulty removing pelvic mesh. that’s because it is meant to be a permanent implant!!!! Please go to an expert.

  5. Nancy December 15, 2017 at 4:18 am - Reply

    Question. Why were Des still using mesh products after companies stopped selling them. Were they not contacted?

  6. Brandi December 22, 2017 at 2:10 am - Reply

    Have you heard of anyone suffer complications from Seprafilm flurry? Also matalic clips? Just had my eighth surgery. Two of them were prolapse. I have a constant pinch/pulling feeling in my abdomen/pelvic cavity. Such a strange feeling

  7. Servantleader January 2, 2018 at 10:03 am - Reply

    Hello to everyone. I had a partial removal done and I am still suffering severely. I suffer with many nerve problems, digestive, autoimmune disorders, high blood pressure the list goes on, and on…. I am over the fight for money at this point. I’m fighting for my life!!!

    • Jane Akre January 2, 2018 at 11:54 am - Reply

      I have yet to hear of anyone doing well after a partial removal…….. Please go to the best and try and have a full removal if that is suggested by a medical professional.

  8. Srankin January 8, 2018 at 12:34 pm - Reply

    Hi, I had a removal of the mesh and still feel it in my body too. I now have digestion problems high blood pressure problems with severe constipation and complete prolapse. My Bladder worked its way out of my body! I am going to a new surgeon to see if he can remove all of the mesh that is still there. I can literally feel it when I have to push my bladder back into my body. I taste a metalic taste and have no energy. This has effected my entire life. What can they use instead of mesh to fix my prolapse? thank you

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