Mr. Ashwini Trehan - Endometriosis Specialist

Mr. Trehan is a specialist in the treatment of endometriosis and has helped countless endometriosis patients across the globe achieve pain relief and pregnancy. Mr. Trehan has innovated three surgical techniques in order to improve the outcome associated with endometriosis treatment surgery. Mr. Trehan removes all endometriosis, endometrioma (chocolate) cysts and adhesions from the pelvis completely and under no circumstances removes the pelvic organs (such as the uterus, ovaries, bowel, bladder and ureters) in order to treat endometriosis, as he has demonstrated that a hysterectomy (removal of the uterus) and oophorectomy (removal of the ovaries) are not the solution to treating endometriosis. Mr. Trehan performs all endometriosis surgery with no exceptions, no matter how advanced the endometriosis via laparoscopic (keyhole) surgery as it offers numerous advantages to the patient. Mr. Trehan’s endometriosis surgical complication rates are amongst the lowest reported in the medical literature and 90% of his patients leave the hospital after just one night’s stay following surgery, despite many of his patients having the most complicated cases of endometriosis and numerous previous failed, unsuccessful and abandoned operations.

Mr. Trehan is a consultant gynaecologist, a Fellow of both the Royal College of Surgeons (FRCS) and the Royal College of Obstetricians and Gynaecologists (FRCOG) and a specialist in the treatment of endometriosis. Having practiced in the National Health Service (NHS) for over 30 years (of which 20 years were as a consultant), Mr. Trehan now practices solely within the private sector.

Mr. Trehan is vastly experienced in the treatment of patients with endometriosis and has helped many reach their primary end goals of a reduction or elimination of pain and an increase in fertility resulting in pregnancy. Many of Mr. Trehan’s patients have the most complicated and advanced stages of endometriosis and/or have had previous unsuccessful medical and surgical treatments and travel from other parts of the United Kingdom and abroad in order to see him. Mr. Trehan’s clinic was one of the first British Society for Gynaecological Endoscopy (BSGE) accredited centres for the treatment of advanced endometriosis, and remains the only private clinic in the country to have achieved this accreditation. Additionally, Mr. Trehan frequently presents at international conferences on the surgical management of endometriosis and has organised national conferences in order to train other doctors on the management of endometriosis and has acted as a supervisor for doctors studying Masters of Science degrees on treating endometriosis.

Mr. Trehan has innovated, pioneered and implemented three surgical techniques for the treatment of endometriosis:

  • Total Pelvic Peritoneal Excision – an extension of conventional surgical excision of endometriosis. In this procedure the entire pelvic peritoneum, not just the region which visibly appears to contain endometriosis is removed in order to improve patient outcome in terms of pain, infertility and post-surgical endometriosis recurrence.  By performing Total Pelvic Peritoneal Excision, Mr. Trehan has demonstrated that there is no need for a bilateral oophorectomy (removal of both ovaries) in the treatment of endometriosis. This is associated with numerous advantages for the patient as bilateral oophorectomy results not only in a permanent, irreversible state of infertility but also in a loss of ovarian hormone secretion, resulting in damaging long term effects on almost every system of the body.
  • Temporary Ovarian Suspension – following any gynaecological surgery including treatment for endometriosis, the ovaries are particularly susceptible to forming adhesions (scar tissue which holds organs together). These ovarian adhesions can in turn themselves cause symptoms similar to endometriosis (such as pelvic pain and infertility). Mr. Trehan innovated the Temporary Ovarian Suspension technique in order to prevent the formation of such adhesions following the surgical treatment of endometriosis.
  • Laparoscopic Post-Hysterectomy Vaginal Vault Excision – following a hysterectomy in patients with endometriosis, it is possible for endometriosis to ‘bury’ in the scar of the vaginal vault/apex, resulting in chronic pelvic pain and dyspareunia (pain during sexual intercourse). Mr. Trehan developed Laparoscopic Post-Hysterectomy Vaginal Vault Excision in order to remove the endometriosis from this scar by excising (cutting out) the scar and surrounding region and then restitching the vaginal vault/apex.

Mr. Trehan was the first to practice these three techniques and further information can be found on the Surgical Treatments of Endometriosis page. Mr. Trehan’s pioneering endometriosis work and services have been the subject of numerous awards and significant national and international media interest.

Mr. Trehan has successfully treated and operated on many patients with endometriosis ranging from those with mild stages of endometriosis to those with the most advanced stages of endometriosis who have previously been refused surgical treatment or had incomplete/abandoned previous surgeries on the basis of the complexity of their endometriosis and pelvic pathology.

Mr. Trehans performs all surgery for endometriosis with no exceptions via laparoscopic (keyhole) surgery as it is associated with numerous advantages for the patient in terms of magnification of the endometriosis lesion and its complete removal, post-operative complications, pain, recovery and cosmetic appearance when compared to laparotomy (open surgery). Furthermore, despite the complicated nature and advanced stage of endometriosis of many of Mr. Trehan’s patients, his surgical complication rates, conversion to open surgery rates and post-surgery hospital readmission rates are amongst the lowest reported in the medical literature.

Mr. Trehan appreciates that many women have in the past not had their endometriosis taken seriously or treated effectively. He hopes to address these issues by not only providing the latest surgical treatment, but also listening to patients, fully explaining their condition and the cause for their symptoms, allowing patients to understand their condition and treatment (for instance by providing pictures taken at the time of diagnosis and operation), and providing substantial and regular follow-up care both in person and over the telephone.

This website contains information on the causes & symptoms of endometriosis, how Mr. Trehan diagnoses and treats endometriosis, and general information on Mr. Trehan’s practice. If you would like to make an appointment to see Mr. Trehan, please click here.

Thank you so much for what you have done for me. After suffering for so many years, I am now looking forward to being pain free and can get on with my life.
Patient, Lincoln
I am pleased to announce that I am expecting our second baby. My husband and I again thank you sincerely for your expertise and skill operating and advising us about my endometriosis. Once again, we are indebted to you eternally for the work you have done.
Patient, Oldham
You changed my life. I am looking forward to the birth of my second child, and have been able to work.
Patient, Scarborough
I am so thankful that I was able to be treated by my consultant of choice & In my opinion the best gynae surgeon in the country! I don’t think I would have travelled 200+miles unless I was in best hands. I am extremely grateful to you, thanking you again.
Patient, London
I would like to express our sincere thanks and gratitude for the treatment we received under your care. It has been 3 months and my wife regained her strength and well being.
Patient, Oman
The world’s a better place because of people just like you!
Patient, Nigeria
I am writing to you for what you have done for me. I have been feeling so much better and my quality of life has improved with my ability to work every day throughout the month. I am appreciative of your skill and care in what you do. Your telephone call impressed on me.
Patient, Huddersfield
It has been my first day back at work and I have been inundated with people telling me how much happier I look.
Patient, Grimsby
I just wanted to thank you for giving me my life back. From our first meeting I knew that I had found my light at the end of a very dark tunnel. Your understanding, knowledge and genuine belief in me and my symptoms gave me reassurance finally.
Patient, Leicester
Thank you for all you have done. If it were not for your careful time and procedure I would not be where I am today. You have dramatically changed my life.
Patient, Holmfirth
I have seen many doctors over the past 15 years many of them have shown limited compassion, empathy and understanding for endometriosis. To find you literally by trawling the internet was my savoir.
Patient, Chester
Our family is now complete, and neither child would be here if it wasn’t for your skill as a surgeon. My husband and I will always be grateful.
Patient, Barnsley
I can’t thank you enough for your care, skill, dedication and what you did for me. You are a true star & will always be a special person to have had an impact on my life. Thanks.
Patient, London
My life has changed beyond recognition. I cannot thank the team enough for what they have done, especially Mr Trehan. He is a saint. I am healthy and happier person now, I never thought I could.
Patient, Leeds
Once again I would like to thank you for your expert care and attention and to let you know that everything is well with me.
Patient, Wiltshire
You treated me successfully for endometriosis. I have utmost confidence in your experience and abilities.
Patient, Gurnsey
Thank you for your care in treating my endometriosis. Your advice, care support and surgery have been second to none.
Patient, Bradford
Thank you for your care and patience. We are blessed to have found a doctor like you.
Patient, Mauritius
It quickly became apparent that all I had heard about you from some of your patients, and peers is correct. You have that rare combination of expertise and genuine concern for your patient’s well being. And for that I am truly grateful. My only regret is that I didn’t get to see you much earlier.
Patient, Gwynedd (North-West Wales)
Thank you very much for your help. The procedure has made such a huge difference to my life. I am practically pain free even during menses. I have not used pain killers at all since my operation.
Patient, Birmingham
Mr Trehan I will never forget your kindness.
Patient, Cyprus
Thank you so much for what you have done for me. Me and my fiancée will always remember you fondly as the man who gave us the best wedding present imaginable.
Patient, Wolverhampton
My quality of life has improved drastically and I can only thank you once more for what you have done for me. I am now managing to work 30 hours per week which would have been unthinkable only a short time ago.
Patient, Sandbach
Unfortunately words cannot convey my gratitude. All I can say is thank you so much for giving me my life back.
Patient, Brighouse
Thank you so much for everything you did for me in performing the incredible operation earlier this year. You have performed a miracle and given me my life back! I am so grateful.
Patient, York
I felt so much better than I did when I first came to see you. It has been a great privilege to have you as my consultant. I know that I would not have received such care and attention from anyone else.
Patient, Leicester
We have been trying for 3 Years and this is the first possible month after my operation that it was possible to fall pregnant and I did. I know it is early days yet, but I wanted to say a huge thank you for you to have made it possible.
Patient, Southport
Despite all the awards you have won for being such an outstanding and innovative surgeon, the biggest thing for me is that you have never lost sight of your patients! You understand what it’s like to live with the condition, you are always there for your patients and you have our best interests at heart.
Patient, Chester
My husband and I wish to express our gratitude for everything you have done for us. Your skill, care attention, patience and understanding are amazing.
Patient, Aberdeen
I am now completely pain free and all my cystis symptoms have virtually disappeared. I would like to thank you for all your care and attention over the last 2-3 Years.
Patient, Harrogate
Thank you for all your kindness. Words cannot express my gratitude.
Patient, Londonderry (Northern Ireland)
I just wanted to say thanks to you for everything you did for me. You have given me faith in medical procedures. Keep up the good work.
Patient, Oldswinford
Mr Trehan is the only doctor who has ever listened to me and understood the cause of my symptoms. I feel better than I have done in years.
Patient, Sheffield
I would like to thank you for the genuine concern, commitment and dedicated care you always gave me. I always had complete confidence in you and never ever felt like just another number or statistic.
Patient, Dewsbury
You are not only amazing surgeon, but an amazing person too.
Patient, Leeds

Appointments & Contact

Click here for information on making an appointment with Mr. Trehan
Copyright Mr. Ashwini Trehan