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Developing training pathways in advanced endoscopic resection and third-space endoscopy in the U.S.
As a gastroenterology and hepatology fellow, choosing a career path was a daunting prospect. Despite the additional specialization, there seemed to be endless career options to consider. Did I want to join an academic, private, or hybrid practice? Should I subspecialize within the field? Was it important to incorporate research or teaching into my practice? What about opportunities to take on administrative or leadership roles?
Fellowship training at a large academic research institution provided me the opportunity to work with expert faculty in inflammatory bowel disease, esophageal disease, motility and functional gastrointestinal disease, pancreaticobiliary disease, and hepatology. I enjoyed seeing patients in each of these subspecialty clinics. But, by the end of my second year of GI fellowship, I still wasn’t sure what I wanted to do professionally.
A career in academic general gastroenterology seemed to be a good fit for my personality and goals. Rather than focusing on research, I chose to position myself as a clinician educator. I knew that having a subspecialty area of expertise would help improve my clinical practice and make me a more attractive candidate to academic centers. To help narrow my choice, I looked at the clinical enterprise at our institution and assessed where the unmet clinical needs were most acute. Simultaneously, I identified potential mentors to support and guide me through the transition from fellow to independent practitioner. I decided to focus on acquiring the skills to care for patients with anorectal diseases and lower-GI motility disorders, as this area met both of my criteria – excellent mentorship and an unmet clinical need. Under the guidance of Dr. Yolanda Scarlett, I spent my 3rd year in clinic learning to interpret anorectal manometry tests, defecograms, and sitz marker studies and treating patients with refractory constipation, fecal incontinence, and anal fissures.
With a plan to develop an expertise in anorectal diseases and low-GI motility disorders, I also wanted to focus on improving my endoscopic skills to graduate as well rounded a clinician as possible. To achieve this goal, I sought out a separate endoscopy mentor, Dr. Ian Grimm, the director of endoscopy at the University of North Carolina at Chapel Hill. Dr. Grimm, a classically trained advanced endoscopist performing endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP), had a burgeoning interest in endoscopic mucosal resection (EMR) and had just returned from a few months in Japan learning to perform endoscopic submucosal dissection (ESD) and peroral endoscopic myotomy (POEM).
When I began working with Dr. Grimm, I had not even heard the term third-space endoscopy and knew nothing about ESD or POEM. I spent as much time as possible watching and assisting Dr. Grimm with complex endoscopic mucosal resection (EMR) during the first few months of my 3rd year. Soon after my exposure to advanced endoscopic resection, it was clear that I wanted to learn and incorporate this into my clinical practice. I watched Dr. Grimm perform the first POEM at UNC in the fall of 2016 and by that time I was hooked on learning third-space endoscopy. I observed and assisted with as many EMR, ESD, and POEM cases as I could that year. In addition to the hands-on and cognitive training with Dr. Grimm, I attended national meetings and workshops focused on learning third-space endoscopy. In the spring of my 3rd year I was honored to be the first fellow to complete the Olympus master class in ESD – a 2-day hands-on training course sponsored by Olympus. By the end of that year, I was performing complex EMR with minimal assistance and had completed multiple ESDs and POEMs with cognitive supervision only.
After fellowship, I joined the UNC faculty as a general gastroenterologist with expertise in anorectal disease and lower-GI motility disorders. While I was comfortable performing complex EMR, I still needed additional training and supervision before I felt ready to independently perform ESD or POEM. With the gracious support and encouragement of our division chief, I continued third-space endoscopy training with Dr. Grimm during dedicated protected time 2 days each month. Over the ensuing 4 years, I transitioned to fully independent practice performing all types of advanced EMR and third-space endoscopy including complex EMR, ESD, endoscopic full-thickness resection (EFTR), submucosal tunnel endoscopic resection (STER), esophageal POEM, gastric POEM, and Zenker’s POEM.
As one of the first gastroenterologists in the United States to perform third-space endoscopy without any formal training in advanced pancreaticobiliary endoscopy, I believe learning advanced endoscopic resection and third-space endoscopy is best achieved through a training pathway separate from the conventional advanced endoscopy fellowship focused on teaching EUS and ERCP. Although there are transferable skills learned from EUS and ERCP to the techniques used in third-space endoscopy, there is nothing inherent to performing EUS or ERCP that enables one to learn how to perform an ESD or a POEM.
There is a robust training pathway to teach advanced pancreaticobiliary endoscopy, but no formal training pathway exists to teach third-space endoscopy in the United States. Historically, a small number of interested and motivated advanced pancreaticobiliary endoscopists sought out opportunities to learn third-space endoscopy after completion of their advanced endoscopy fellowship, in some cases many years after graduation. For these early adopters in the United States, the only training opportunities required travel to Japan or another Eastern country with arrangements made to observe and participate in third-space endoscopy cases with experts there. With increased recognition of the benefits of ESD and POEM over the past 5-10 years in the United States, there has been greater adoption of third-space endoscopy and with it, more training opportunities. Still, there are very few institutions with formalized training programs in advanced endoscopic resection and third-space endoscopy in the United States to date.
Proof that this model works
In Eastern countries such as Japan, training endoscopists to perform ESD and POEM has been successfully achieved through an apprenticeship model whereby an expert in third-space endoscopy closely supervises a trainee who gains greater autonomy with increasing experience and skill over time. My personal experience is proof that this model works. But, adopting such a model more widely in the United States may prove difficult. We lack a sufficient number of experienced third-space endoscopy operators and, given the challenges to appropriate reimbursement for third-space endoscopy in the United States, there is understandable resistance to accepting the prolonged training period necessary for technical mastery of this skill.
In part, a long training period is needed because of a relative paucity of appropriate target lesions for ESD and the rarity of achalasia in the United States. While there is consensus among experts regarding the benefits of ESD for resection of early gastric cancer (EGC), relatively few EGCs are found in the United States and indications for ESD outside resection of EGC are less well defined with less clear benefits over more widely performed piecemeal EMR. Despite these challenges, it is critical that we continue to develop dedicated training pathways to teach advanced endoscopic resection and third-space endoscopy in the United States. My practice has evolved considerably since completion of fellowship nearly 6 years ago, and I now focus almost exclusively on advanced endoscopic resection and third-space endoscopy. Recently, Dr. Grimm and I began an advanced endoscopic resection elective for the general GI fellows at UNC and we are excited to welcome our first advanced endoscopic resection and third-space endoscopy fellow to UNC this July.
While there are many possible avenues to expertise in advanced endoscopic resection, few will likely follow the same path that I have taken. Trainees who are interested in pursuing this subspecialty should seek out supportive mentors in a setting where there is already a robust case volume of esophageal motility disorders and endoscopic resections. Success requires the persistent motivation to seek out diverse opportunities for self-study, exposure to experts, data on developments in the field, and hands-on exposure to as many ex-vivo and in-vivo cases as possible.
Dr. Kroch is assistant professor of medicine in the division of gastroenterology and hepatology at the University of North Carolina at Chapel Hill. He disclosed having no conflicts of interest.
As a gastroenterology and hepatology fellow, choosing a career path was a daunting prospect. Despite the additional specialization, there seemed to be endless career options to consider. Did I want to join an academic, private, or hybrid practice? Should I subspecialize within the field? Was it important to incorporate research or teaching into my practice? What about opportunities to take on administrative or leadership roles?
Fellowship training at a large academic research institution provided me the opportunity to work with expert faculty in inflammatory bowel disease, esophageal disease, motility and functional gastrointestinal disease, pancreaticobiliary disease, and hepatology. I enjoyed seeing patients in each of these subspecialty clinics. But, by the end of my second year of GI fellowship, I still wasn’t sure what I wanted to do professionally.
A career in academic general gastroenterology seemed to be a good fit for my personality and goals. Rather than focusing on research, I chose to position myself as a clinician educator. I knew that having a subspecialty area of expertise would help improve my clinical practice and make me a more attractive candidate to academic centers. To help narrow my choice, I looked at the clinical enterprise at our institution and assessed where the unmet clinical needs were most acute. Simultaneously, I identified potential mentors to support and guide me through the transition from fellow to independent practitioner. I decided to focus on acquiring the skills to care for patients with anorectal diseases and lower-GI motility disorders, as this area met both of my criteria – excellent mentorship and an unmet clinical need. Under the guidance of Dr. Yolanda Scarlett, I spent my 3rd year in clinic learning to interpret anorectal manometry tests, defecograms, and sitz marker studies and treating patients with refractory constipation, fecal incontinence, and anal fissures.
With a plan to develop an expertise in anorectal diseases and low-GI motility disorders, I also wanted to focus on improving my endoscopic skills to graduate as well rounded a clinician as possible. To achieve this goal, I sought out a separate endoscopy mentor, Dr. Ian Grimm, the director of endoscopy at the University of North Carolina at Chapel Hill. Dr. Grimm, a classically trained advanced endoscopist performing endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP), had a burgeoning interest in endoscopic mucosal resection (EMR) and had just returned from a few months in Japan learning to perform endoscopic submucosal dissection (ESD) and peroral endoscopic myotomy (POEM).
When I began working with Dr. Grimm, I had not even heard the term third-space endoscopy and knew nothing about ESD or POEM. I spent as much time as possible watching and assisting Dr. Grimm with complex endoscopic mucosal resection (EMR) during the first few months of my 3rd year. Soon after my exposure to advanced endoscopic resection, it was clear that I wanted to learn and incorporate this into my clinical practice. I watched Dr. Grimm perform the first POEM at UNC in the fall of 2016 and by that time I was hooked on learning third-space endoscopy. I observed and assisted with as many EMR, ESD, and POEM cases as I could that year. In addition to the hands-on and cognitive training with Dr. Grimm, I attended national meetings and workshops focused on learning third-space endoscopy. In the spring of my 3rd year I was honored to be the first fellow to complete the Olympus master class in ESD – a 2-day hands-on training course sponsored by Olympus. By the end of that year, I was performing complex EMR with minimal assistance and had completed multiple ESDs and POEMs with cognitive supervision only.
After fellowship, I joined the UNC faculty as a general gastroenterologist with expertise in anorectal disease and lower-GI motility disorders. While I was comfortable performing complex EMR, I still needed additional training and supervision before I felt ready to independently perform ESD or POEM. With the gracious support and encouragement of our division chief, I continued third-space endoscopy training with Dr. Grimm during dedicated protected time 2 days each month. Over the ensuing 4 years, I transitioned to fully independent practice performing all types of advanced EMR and third-space endoscopy including complex EMR, ESD, endoscopic full-thickness resection (EFTR), submucosal tunnel endoscopic resection (STER), esophageal POEM, gastric POEM, and Zenker’s POEM.
As one of the first gastroenterologists in the United States to perform third-space endoscopy without any formal training in advanced pancreaticobiliary endoscopy, I believe learning advanced endoscopic resection and third-space endoscopy is best achieved through a training pathway separate from the conventional advanced endoscopy fellowship focused on teaching EUS and ERCP. Although there are transferable skills learned from EUS and ERCP to the techniques used in third-space endoscopy, there is nothing inherent to performing EUS or ERCP that enables one to learn how to perform an ESD or a POEM.
There is a robust training pathway to teach advanced pancreaticobiliary endoscopy, but no formal training pathway exists to teach third-space endoscopy in the United States. Historically, a small number of interested and motivated advanced pancreaticobiliary endoscopists sought out opportunities to learn third-space endoscopy after completion of their advanced endoscopy fellowship, in some cases many years after graduation. For these early adopters in the United States, the only training opportunities required travel to Japan or another Eastern country with arrangements made to observe and participate in third-space endoscopy cases with experts there. With increased recognition of the benefits of ESD and POEM over the past 5-10 years in the United States, there has been greater adoption of third-space endoscopy and with it, more training opportunities. Still, there are very few institutions with formalized training programs in advanced endoscopic resection and third-space endoscopy in the United States to date.
Proof that this model works
In Eastern countries such as Japan, training endoscopists to perform ESD and POEM has been successfully achieved through an apprenticeship model whereby an expert in third-space endoscopy closely supervises a trainee who gains greater autonomy with increasing experience and skill over time. My personal experience is proof that this model works. But, adopting such a model more widely in the United States may prove difficult. We lack a sufficient number of experienced third-space endoscopy operators and, given the challenges to appropriate reimbursement for third-space endoscopy in the United States, there is understandable resistance to accepting the prolonged training period necessary for technical mastery of this skill.
In part, a long training period is needed because of a relative paucity of appropriate target lesions for ESD and the rarity of achalasia in the United States. While there is consensus among experts regarding the benefits of ESD for resection of early gastric cancer (EGC), relatively few EGCs are found in the United States and indications for ESD outside resection of EGC are less well defined with less clear benefits over more widely performed piecemeal EMR. Despite these challenges, it is critical that we continue to develop dedicated training pathways to teach advanced endoscopic resection and third-space endoscopy in the United States. My practice has evolved considerably since completion of fellowship nearly 6 years ago, and I now focus almost exclusively on advanced endoscopic resection and third-space endoscopy. Recently, Dr. Grimm and I began an advanced endoscopic resection elective for the general GI fellows at UNC and we are excited to welcome our first advanced endoscopic resection and third-space endoscopy fellow to UNC this July.
While there are many possible avenues to expertise in advanced endoscopic resection, few will likely follow the same path that I have taken. Trainees who are interested in pursuing this subspecialty should seek out supportive mentors in a setting where there is already a robust case volume of esophageal motility disorders and endoscopic resections. Success requires the persistent motivation to seek out diverse opportunities for self-study, exposure to experts, data on developments in the field, and hands-on exposure to as many ex-vivo and in-vivo cases as possible.
Dr. Kroch is assistant professor of medicine in the division of gastroenterology and hepatology at the University of North Carolina at Chapel Hill. He disclosed having no conflicts of interest.
As a gastroenterology and hepatology fellow, choosing a career path was a daunting prospect. Despite the additional specialization, there seemed to be endless career options to consider. Did I want to join an academic, private, or hybrid practice? Should I subspecialize within the field? Was it important to incorporate research or teaching into my practice? What about opportunities to take on administrative or leadership roles?
Fellowship training at a large academic research institution provided me the opportunity to work with expert faculty in inflammatory bowel disease, esophageal disease, motility and functional gastrointestinal disease, pancreaticobiliary disease, and hepatology. I enjoyed seeing patients in each of these subspecialty clinics. But, by the end of my second year of GI fellowship, I still wasn’t sure what I wanted to do professionally.
A career in academic general gastroenterology seemed to be a good fit for my personality and goals. Rather than focusing on research, I chose to position myself as a clinician educator. I knew that having a subspecialty area of expertise would help improve my clinical practice and make me a more attractive candidate to academic centers. To help narrow my choice, I looked at the clinical enterprise at our institution and assessed where the unmet clinical needs were most acute. Simultaneously, I identified potential mentors to support and guide me through the transition from fellow to independent practitioner. I decided to focus on acquiring the skills to care for patients with anorectal diseases and lower-GI motility disorders, as this area met both of my criteria – excellent mentorship and an unmet clinical need. Under the guidance of Dr. Yolanda Scarlett, I spent my 3rd year in clinic learning to interpret anorectal manometry tests, defecograms, and sitz marker studies and treating patients with refractory constipation, fecal incontinence, and anal fissures.
With a plan to develop an expertise in anorectal diseases and low-GI motility disorders, I also wanted to focus on improving my endoscopic skills to graduate as well rounded a clinician as possible. To achieve this goal, I sought out a separate endoscopy mentor, Dr. Ian Grimm, the director of endoscopy at the University of North Carolina at Chapel Hill. Dr. Grimm, a classically trained advanced endoscopist performing endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP), had a burgeoning interest in endoscopic mucosal resection (EMR) and had just returned from a few months in Japan learning to perform endoscopic submucosal dissection (ESD) and peroral endoscopic myotomy (POEM).
When I began working with Dr. Grimm, I had not even heard the term third-space endoscopy and knew nothing about ESD or POEM. I spent as much time as possible watching and assisting Dr. Grimm with complex endoscopic mucosal resection (EMR) during the first few months of my 3rd year. Soon after my exposure to advanced endoscopic resection, it was clear that I wanted to learn and incorporate this into my clinical practice. I watched Dr. Grimm perform the first POEM at UNC in the fall of 2016 and by that time I was hooked on learning third-space endoscopy. I observed and assisted with as many EMR, ESD, and POEM cases as I could that year. In addition to the hands-on and cognitive training with Dr. Grimm, I attended national meetings and workshops focused on learning third-space endoscopy. In the spring of my 3rd year I was honored to be the first fellow to complete the Olympus master class in ESD – a 2-day hands-on training course sponsored by Olympus. By the end of that year, I was performing complex EMR with minimal assistance and had completed multiple ESDs and POEMs with cognitive supervision only.
After fellowship, I joined the UNC faculty as a general gastroenterologist with expertise in anorectal disease and lower-GI motility disorders. While I was comfortable performing complex EMR, I still needed additional training and supervision before I felt ready to independently perform ESD or POEM. With the gracious support and encouragement of our division chief, I continued third-space endoscopy training with Dr. Grimm during dedicated protected time 2 days each month. Over the ensuing 4 years, I transitioned to fully independent practice performing all types of advanced EMR and third-space endoscopy including complex EMR, ESD, endoscopic full-thickness resection (EFTR), submucosal tunnel endoscopic resection (STER), esophageal POEM, gastric POEM, and Zenker’s POEM.
As one of the first gastroenterologists in the United States to perform third-space endoscopy without any formal training in advanced pancreaticobiliary endoscopy, I believe learning advanced endoscopic resection and third-space endoscopy is best achieved through a training pathway separate from the conventional advanced endoscopy fellowship focused on teaching EUS and ERCP. Although there are transferable skills learned from EUS and ERCP to the techniques used in third-space endoscopy, there is nothing inherent to performing EUS or ERCP that enables one to learn how to perform an ESD or a POEM.
There is a robust training pathway to teach advanced pancreaticobiliary endoscopy, but no formal training pathway exists to teach third-space endoscopy in the United States. Historically, a small number of interested and motivated advanced pancreaticobiliary endoscopists sought out opportunities to learn third-space endoscopy after completion of their advanced endoscopy fellowship, in some cases many years after graduation. For these early adopters in the United States, the only training opportunities required travel to Japan or another Eastern country with arrangements made to observe and participate in third-space endoscopy cases with experts there. With increased recognition of the benefits of ESD and POEM over the past 5-10 years in the United States, there has been greater adoption of third-space endoscopy and with it, more training opportunities. Still, there are very few institutions with formalized training programs in advanced endoscopic resection and third-space endoscopy in the United States to date.
Proof that this model works
In Eastern countries such as Japan, training endoscopists to perform ESD and POEM has been successfully achieved through an apprenticeship model whereby an expert in third-space endoscopy closely supervises a trainee who gains greater autonomy with increasing experience and skill over time. My personal experience is proof that this model works. But, adopting such a model more widely in the United States may prove difficult. We lack a sufficient number of experienced third-space endoscopy operators and, given the challenges to appropriate reimbursement for third-space endoscopy in the United States, there is understandable resistance to accepting the prolonged training period necessary for technical mastery of this skill.
In part, a long training period is needed because of a relative paucity of appropriate target lesions for ESD and the rarity of achalasia in the United States. While there is consensus among experts regarding the benefits of ESD for resection of early gastric cancer (EGC), relatively few EGCs are found in the United States and indications for ESD outside resection of EGC are less well defined with less clear benefits over more widely performed piecemeal EMR. Despite these challenges, it is critical that we continue to develop dedicated training pathways to teach advanced endoscopic resection and third-space endoscopy in the United States. My practice has evolved considerably since completion of fellowship nearly 6 years ago, and I now focus almost exclusively on advanced endoscopic resection and third-space endoscopy. Recently, Dr. Grimm and I began an advanced endoscopic resection elective for the general GI fellows at UNC and we are excited to welcome our first advanced endoscopic resection and third-space endoscopy fellow to UNC this July.
While there are many possible avenues to expertise in advanced endoscopic resection, few will likely follow the same path that I have taken. Trainees who are interested in pursuing this subspecialty should seek out supportive mentors in a setting where there is already a robust case volume of esophageal motility disorders and endoscopic resections. Success requires the persistent motivation to seek out diverse opportunities for self-study, exposure to experts, data on developments in the field, and hands-on exposure to as many ex-vivo and in-vivo cases as possible.
Dr. Kroch is assistant professor of medicine in the division of gastroenterology and hepatology at the University of North Carolina at Chapel Hill. He disclosed having no conflicts of interest.