Dr Mathew Leonardi

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Hamilton, ON
Dr Mathew Leonardi

Dr Mathew Leonardi is an advanced gynaecological surgeon at McMaster University Medical Centre Additional information about the clinic: endometriosisclinic.ca

05/26/2026

Please consider signing this Canadian petition to encourage the government of Canada to devote more resources and effort to !

05/19/2026

ISUOG's free webinar series is back! 💫

The first webinar of the series is titled 'Endometriosis uncovered: mastering ultrasound for excellence' with sessions from our experts A/Prof. Ligita Jokubkiene, A/Prof. Mathew Leonardi, Prof. George Condous and Dr Alessandra di Giovanni.

📅 Date: Tuesday 26 May 2026
🕒 Time: 12:00 BST (UTC+1)

📖 Learn to:

🔴 Identify the key ultrasound features of superficial endometriosis and apply practical scanning techniques to improve detection in routine clinical practice.
🔴Evaluate the extent and characteristics of bowel endometriosis on preoperative imaging and communicate findings essential for surgical planning and multidisciplinary management.
🔴 And much more!

Find out more and register for free here: https://bit.ly/4eK1SKi

Proudly sponsored by GE HealthCare.

05/14/2026

Hot take, but maybe not the one you’re expecting: I’m not sure endometriosis needs a new name. I think it needs a new level of understanding.

The conversation about PCOS becoming PMOS is important, and it makes sense that people are asking whether endometriosis should be renamed too.

I understand the impulse. “Endometriosis” does not tell the public that this disease can affect bowel function, bladder function, fertility, sexual function, fatigue, inflammation, pain processing, the nervous system, and quality of life. It also does not explain why symptoms, disease extent, and lived experience often do not line up neatly.

But I’m not sure the central problem is the name itself. Most disease names do not explain everything the disease can cause. Diabetes does not list neuropathy, kidney disease, eye disease, cardiovascular risk, or organ dysfunction in its name. Rheumatoid arthritis and lupus do not name every organ system they can affect either. We understand these conditions as systemic because medicine teaches them that way.

Endometriosis needs that same shift.

Not just a better label, but better literacy, better medical education, better public awareness, and better recognition that this is not simply “bad periods,” not simply pelvic lesions, and not simply a reproductive disease.

Maybe the name does not need to do all the work.

Maybe we do.

04/24/2026

Our letter to the editor responding to ACOG’s new guideline on endometriosis diagnosis was not accepted, but the message remains important.

Endometriosis diagnosis cannot be reduced to a simple “yes or no.”

The guideline acknowledges that ultrasound has a role, and that accuracy depends on the training and expertise of the person performing and interpreting the scan. That point deserves emphasis.

A routine pelvic ultrasound is not the same as an advanced endometriosis mapping ultrasound.

Modern imaging should evaluate more than the uterus and ovaries. It should assess for endometriomas, adenomyosis, deep disease, pelvic mobility, sliding sign, bowel involvement, bladder disease, uterosacral disease, rectovaginal disease, and other findings that may change treatment planning.

But even excellent imaging is only one part of the picture.

Chronic pelvic pain is often driven by multiple overlapping contributors, including adenomyosis, pelvic floor dysfunction, bladder pain, bowel disorders, neuropathic pain, nociplastic pain, and central sensitization.

So the question should not only be, “Can we see endometriosis?”

It should be: What else is contributing to this person’s pain? What needs to be mapped? What needs to be treated? And what does the care team need to know before any intervention?

The future of endometriosis care is not ultrasound versus laparoscopy.

It is clinical phenotyping, advanced imaging, standardized reporting, and multidisciplinary planning.

Proud to have written this letter with Jorge Carrillo and Juan Diego Villegas. The letter was not accepted, but the conversation still needs to happen.

04/18/2026

One of my absolute favourite things is to teach.

The skills I have gained, thanks to my teachers and giants in the field of GYN and , are a privilege to have and it is essential I pass them down. Every opportunity to teach, I take it!

We must always thank our volunteers and patients for contributing to the next generation of expert clinicians. In this case, thanks to the volunteers at the course from

We will make things better. I promise.

Also, please enjoy this profile view of my second favourite thing after teaching - my mullet! 😅

04/16/2026

A story from clinic. A lesson. Another utility for ultrasound in refining the management of patients with .

And yes, ABBA was my car playlist. I am obsessed with ABBA!

04/11/2026

Most people have no idea endometriosis can grow in the belly button.

But it can.

These 4 surgical images show umbilical endometriosis, a rare form of disease that can affect the navel. It is unusual, striking, and exactly the kind of thing that reminds us how misunderstood endometriosis still is.

So many people still think endometriosis only looks one way, presents one way, or stays confined to the pelvis. It does not.

Sometimes it shows up in places people would never expect. Sometimes it is missed. Sometimes patients are left doubting themselves because what they are experiencing does not fit the version of endometriosis most people have been taught.

That is why awareness matters.

Because rare does not mean insignificant.
And shocking should not mean ignored.

The more people see the many ways endometriosis can present, the harder it becomes to dismiss, minimise, or overlook.

Graphic images, yes. But also an important reality of this disease.

12/21/2025

Wonderful to welcome Dr Claudia Guajardo from Chile for our ultrasound course and a visit. It is truly impressive to witness the global momentum to push gynecology ultrasound forward, especially for endometriosis! The next era of gyn care is going to so much better thanks to the passion and effort of people like Claudia 💛

11/17/2025

AAGL members can network and knowledge share through Special Interest Groups. A SIG is an informal community within our organization that brings together members with a shared focus. These groups create forums to connect people who have similar clinical interests or professional backgrounds in subspecialties within minimally invasive gynecology.

Our new ultrasound and imaging SIG is opening the doors. We are elevating how gynecologists use ultrasound in everyday care. Ultrasound is accessible, reproducible with training, and surgeon-performable. Our SIG will share education, mentoring, and standardized reporting so more clinicians can diagnose fibroids, adenomyosis, endometriosis and more with precision.

January is our webinar month. Stay tuned for the specific date and subject.

Tell us what you want covered in January. Drop topic ideas in the comments.

If you are an AAGL member and want to join, comment JOIN and we will DM you the sign up details.

Address

McMaster University Medical Centre, 1200 Main Street W
Hamilton, ON
L8N3Z5

Telephone

+19055212100 76587

Website

http://mathewleonardi.com/

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