Monday, January 23, 2023

Dr. Ricardo Carrau, MD Professor, Department of Otolaryngology-Head and Neck Surgery, Director, Comprehensive Skull Base Surgery Program The Ohio State University

 

Dr. Ricardo Carrau, MD

Professor, Department of Otolaryngology-Head and Neck Surgery,

Director, Comprehensive Skull Base Surgery Program

The Ohio State University


 

Dr. Carrau earned his MD degree from the Puerto Rico School of Medicine and trained in Otolaryngology at the University Hospital of Puerto Rico. He subsequently pursued a Head and Neck Surgical Oncology Fellowship at the University of Pittsburgh. Dr. Carrau is internationally recognized as one of the pioneers and leaders in the field of skull base surgery. He has trained over 60 fellows and has >570 peer-reviewed publications (>31,700 citations; h-index=89), making him one of the most cited Otolaryngologists.

 

Why did you choose to specialize in Otolaryngology? What attracted you in the field?

The short answer is that I loved the challenge of the head and neck oncology- that is really what attracted me to the specialty. The challenge in the operating room and the technical aspects: there is always a cranial nerve in the way, or a vessel! I found it both interesting and challenging. Something that fitted my personality. That’s the short answer. The long answer is that I started in Internal Medicine- I really liked the field of Internal Medicine, in regard to the knowledge they have, and their understanding of human physiology. It was fascinating, but when I went on to practice Internal Medicine, it didn’t fit me. All of my life I thought I was going to do something in internal medicine, maybe Cardiology etc., so at that point I was a little bit lost. I started looking at all the things medical students are exposed to. Unfortunately, for me, surgical specialties were on my last rotation of medical school, and by that time it was difficult to change; I had already been accepted to internal medicine. As I rotated through the different surgical subspecialties, I was attracted to many of them but at the end, the one that I felt really fitted me well, and I was fascinated and passionate about was Head and Neck Surgery. Once I started, I learned to like other aspects of ENT, like ear surgery, laryngology, rhinology and everything else of what we do. I think at that time I took the right decision- I do not regret it!

 

Is there something that you don't like about the specialty?

We deal with areas of the body that tend to accumulate a variety of psychosomatic symptoms. Many times, there are patients that are difficult to manage. They have a variety of symptoms but a disease is hard to pinpoint, and the symptoms are hard to manage on a chronic basis. However, I don't see that much of that in head and neck oncology. But in the other specialties like laryngology and rhinology, you see quite a bit of that. That's the one thing that I don't particularly like, yet it's a big part of what we do, especially for general ENT practitioners- it is frequently what a big part of what you do in the office.

 

But for head and neck and skull based in particular you, there is nothing that you can think of?

No, I don't.  I don't dislike any of the aspects of, of the head and neck or skull base surgery. I think that they are very fulfilling yet, very, very challenging. The only thing that I regret and hopefully this will continue to improve is our survival rate. It is psychologically very hard to take that a good percentage of your patients, up to 50%, die of their disease no matter what you do. We're making strides in that regard, but it's still taxing, and psychologically it is hard to take sometimes.

 

I see. So, my next question, is about your subspecialty. Initially you did your fellowship in surgical oncology, and essentially you are one of the pioneers in what we call today endoscopic skull base surgery. So, what led you to this transition from mainly open surgery in the context of surgical oncology to the endoscopic one?

Yeah, we started as a concerted effort to do that when I saw the endoscope as one more tool that we had available to us. And at that time, I was doing some aspects of rhinology. including inflammatory disease of the sinuses, and I was also doing the head and neck and the skull base surgeries. It seemed like the endoscope offered another visualization tool to circumvent some of the problems we were having in the anterior skull base surgery. So, I started using it more.  Like everybody else at that time, we started using it for optic nerve decompressions, palatine artery ligations and orbital decompressions and also frontal sinus surgery. That really prepared the scenario to use it further in the skull base. Our first step was to really use it in hypophysis or sellar surgery and that offered proof of concept that it could be done, that it could be done safely, and that you could deal with the complications of the surgery even if you did it endoscopically. We started expanding from there.

But at the beginning at least, and maybe in the middle of it also, we were not looking for anything in particular. We were just looking to do the surgery better, to see better and to have better results. Then, we got to a certain point -I can’t tell you exactly when that was, probably around 2005, 2006- when we had acquired enough skills and enough experience to then think…okay, so where can we take this? And that's when we started concentrating on the fact that this can be done to a much greater extent. The endoscopic approach offers you a different angle, you can combine it with this or that approach, and suddenly we were able to look at 360 degrees of the skull base.

 

How did it feel at the point that you mentioned that you initially started, when you began doing some proof-of-concept surgeries? I presume at that point it was uncharted area, right? It's not like you had someone to walk you through it. You were essentially the first one to do so. How was that?

Well, again, because we had acquired the skills that I mentioned before, I felt very confident that we could do the surgery. I also had the experience of doing the various surgeries surgery with an open approach. For example, when approaching the sella, I had previously used the transnasal and trans-septal approaches, so I knew what was involved, what the endoscope was capable of and the skills that it required. The most difficult thing was really to convince my neurosurgical colleagues that we could do it. I started back during my time in the US Air Force just showing them that after a trans-septa surgery we could insert the endoscope and look around, providing a great view inside the sella that they didn't have with the microscope. So that was the first attempt to persuade them. Then back in the nineties, a colleague in Pittsburgh, Hae Dong Jho got interested in the possibility and it took off. I remember that at the beginning we had the microscope set up just in case we couldn't do it with the endoscope. So, we had a backup just in case things didn't go well. After the first ten or so, we never prepared the microscope again. We knew that we could do this, and from there again, we moved into other places of the skull base. Even if we wouldn’t be able to do it with an endoscope, we had a plan B or even a plan C to take care of the problem.

 

I see. And once you essentially proved feasibility after a certain point, I understand that people got convinced that at least for some operations, the endoscopic approach is better, right? So, my question is how and at what point during this process were you able to actually convince people that this does not only work, but it's actually a better approach in some instances?

Yeah, so that's still in the process! I think people have different indications and different biases for the use of the endoscopic approaches. What is best for me, is not necessarily best for another person; the choice is very individualized and depends on your training, and on what circumstances you have. Endoscopy is a surgery that is dependent on technology, dependent on instrumentation. So, if you are in a place where the necessary technology and instrumentation is not possible, then even if you are convinced that it may be a good idea, you cannot do the surgery. Still, there's fairly a fair amount of controversy regarding indications and selection of approaches for many of the diseases that we deal with. In our own group, we have gone back and forth on what to do for certain pathology. You may push the limit to a certain point, and you go and say, “oh, this is really maybe not such a great idea, let's back off” and you go in a different direction, or you just combine it with another complementary approach.

Reconstruction has been one of the of the main aspects that slows down the process of spreading and accepting the endoscopic approaches. It will remain an obstacle until we completely solve the reconstruction-related issues. Again, you have to look at the person, place and circumstances before you make the selection of the approach and that still will continue to hold true. That's one of the reasons for which we’re still teaching courses around the world, endoscopic approaches are slower to be adopted in many places.

 

You mentioned teaching, and I really wanted to ask you how and at what point did you started implementing all these advances in residency training? I presume now it's a fairly big component of the residency training, but how did you started implementing this angle into training?

Yeah, I general it's more of a significant part of the residency program in neurosurgery than it is in ORL. One of the reasons is that it's a very specialized type of surgery. That is not to say that the residents don't get their hands in the cases, but usually it gets to the point that it is more complex, more challenging than what the level of the resident skills is. That's also true for neurosurgery, but because they have a longer program, they push it a little bit more. For both neurosurgery and otolaryngology, it also depends on the interest of each resident, right? So, if you are going to do laryngology, you may not be really interested in spending hours and hours in a skull-base surgery case that you will never do again. However, if you're going into that pathway, you will demonstrate more interest, you will be more engaged and you will be able to advance and do more things than most of the rest of us.

We take that into account in our training what is the trainee desired pathway? What do you want to get out of this? So, for example, in endoscopic skull base surgery, the resident usually finishes the sinus part and then when it's time to drill the sella, neurosurgery starts gets involved. In general, the removal of the tumor depends on what type and extent. If it is a malignancy of the sinonasal tract is more to the side of otolaryngology, and the fellow goes on to do as much as they can do, or if it is a meningioma that will be more on the side of the neurosurgery, it is the opposite. In every case, we work with each other, but we don't have any particular boundary. We rarely say, okay, this is ENT, and this is neurosurgery. Sometimes it depends on who is available at that time. In general, once we are dealing with the circle of wills, I think that that's better off in the hands of the neurosurgery team.

 

You mentioned the skull-base fellow. I'm curious to hear your opinion about rhinology/skull base fellowships. Do you think that the one-year fellowship is enough to gain a good grasp on endoscopic skull-base surgery or do you believe that two-year fellowships are better training-wise?

Yes, with an asterisk. If you are starting from zero and you have never touched an endoscope in your life, I know that would not be enough. Most fellowship candidates, including both otolaryngology and neurosurgery, have had plenty of experience with endoscopic surgery. So, by the time they finish residency, they're fairly familiar and the one year is enough. Actually, we have had a couple of fellows that after the first six months, I just go and tell them, “I don't know what we're going to teach you in the next six months because you're doing already all aspects of the surgery very well. You will continue to get better, but that doesn't mean that you have any limitation”. Although it's somewhat person-dependent, we have a selection process that seems to favor that type of scenario where at the end of the year they are more than capable to do all the aspects of the specialty. And again, that's not to say that they will not continue to improve and hone their skills and continue to learn more and more, but that's true for everybody, including myself. I'm still learning!

 

Yes, of course. Have you had experiences with people with a similar background to yours? I mean, people with a background in head and neck surgical oncology that decided to enroll in a skull base fellowship. And if yes, was that an advantage, or it didn't actually matter?

My bias is that it's very beneficial because the head and neck oncology candidates usually have a very deep understanding of oncological problems and oncological concepts. However, they may be a little bit behind in the sense of the endoscopic skills as opposed to a rhinology type of person that is very adept with endoscopic skills. However, I do not divide my practice in endoscopic and open, right? I do both, and I do hybrid, and I do head a neck oncologic surgery and I do some bread-and-butter rhinology. At the end, I think that coming from either side is fine. Regarding the outcome, I don't see a huge difference on the trainees at the end, even when the beginning may favor one side or the other. I have had fellows with a rhinology background that continue in their rhinology pathway, also doing skull base surgery, mostly endoscopic; and I have had fellows that lean toward head and neck oncology, so they do both the open and the endoscopic approaches. At the end, they are all doing super. Furthermore, the ones that come from the rhinology background, if they choose to do so, can have an experience with open approaches throughout the fellowship year.

 

I understand. I would like now to change our subject a little bit and take it a step behind, from fellowship to into residency. I presume you are reviewing residency applications this time of the year. So, I'm curious to hear if you can think of things that can actually make someone stand out in your eyes and on the other on the other hand, things that are red flags for you.

Yeah. Let's just start from the beginning with the process that we have right now. We’re asking a medical student to be interviewed for a job that they had never done before. So, what you are going to interview for is really to show your potential. Of course, if you have a medical student that rotated in the department, you have been able to observe that person a little bit better, maybe even glance at their technical skills and their ability to interact with people. But for most, it's really potential. So, for example, we get 400 or so applications and we give around 60 interviews, from which we take five residents. It is a big filter. So, what are we looking for? Well, we look at how they have done academically. The examination is a proxy for discipline, hard work and cognitive power; but I have to say that the candidates nowadays are just incredible. We have so many people with high scores and academic proficiency that itbecomes sort of a baseline. Of course, there are always exceptions -there is that individual that is in the 99th percentile of everything they do, and that's a special type of person. But for the most part, most of our candidates are going to be between that 96 to 98 percentile. How can you tell then? You look at other things they have done, maybe research and publications, also what type of research they have done. Has that research turned into a paper? Again, that's just a proxy to show that not only that you can do the work, but you follow it through, and you actually have brought it to fruition. It's not just wasted effort. Then, you look at the letters of recommendation and you look for what the people that have mentor or have supervised that student, have to say, looking for key words. How they work as part of a a team? How was their work ethic? How was their attitude? their engagement during that rotation or during their medical school? And then you look at other things like maybe they've received certain awards, they have some leadership skills that they have put into action, volunteer work. These are proxy metrics for personality, the ability to work in a team, degree of empathy for their fellow human beings etc. So, that's basically what we look at. I have to say that it may be very difficult to discern when you interview that person because it may look very good in paper and then maybe they're not so much of a people person. Maybe has an awkward personality that makes it difficult to work in a team.

It may be that the intensity of interactions is to low or much or too. So, you try to gauge what is really the Goldilocks point for that person and whether or not they're going to fit in your team.

I always say it's like speed dating to getting married for five years. You're going to have an intense relationship with that person for five years. So, you don't want to miss red flags that will make the relationship go sideways. Red flags include: i) any type of dishonesty. This triggers immediate elimination in my book, because if you start with that type of relationship (and that's true for any personal relationship) it is a really bad start that is due to get worse. You cannot expect it to improve with time. Ii) interpersonal problems that the student may have had that continue. I'm not talking about you got into a fight in middle school. You know, that may be okay. That's not what I'm talking about. It's more like, you got into an argument with your professor that ended up in disciplinary action. That's not to say that you cannot get into arguments with your professor. It is the type of argument and whether the argument is conducted in a professional way. But if it deviates from what we call professionalism, which involves emotional intelligence and involves certain level of maturity, then that's another cause for elimination, I have to say though that this is very rare, and when it is there, it comes up very quickly in their application.

 

So it's easy to pick it up.

This is relatively easy to pick it up. Sometimes, once in a while, I have seen people that went through the filter by being pathological liars; they just lied their way through the system. I have seen people who are not really capable of sustaining healthy interpersonal relationships from day to day, they start yelling at their peers, and the nurses and the patients. That's not to say that they cannot perform in medicine, but then we strongly suggest that they go into a non-patient care specialty, generally they may do better in those! So I think that that's in a nutshell how I look at it. It's not magic formula and it takes a lot of work. To this day we have tried to find what would be the best formula for interviews, and to select residents, yet we still don't have it quite completely right. Well, nonetheless, that's what we use.

 

So you mentioned you mentioned research. I know there's always this debate, at least for early career stages, like residency applications, where you have quality versus quantity. And I understand that it's really hard to evaluate the quality in 60 or 400 applications. But I'm curious if and how that factors in. I mean, 10 case reports versus 2-3 impactful papers, how do you weight that?

If you have ten papers in Cell or Nature, yes, it will put you in a completely different category. But most medical students don't have that. They may have participated in really hardcore research projects, but they are usually not the first author or even in the first three. They just participated in it. Not to take that away value from them, but for the most part, they have translational and/or clinical research, or have case reports. Thus, you look both at the quantity and the quality, and again, you look at what they have done to get there. So, I'll give you a concrete example: If you took a year off and you went to NIH for a year and you came up with a single case report, that's actually a negative. However, if you are in a in a place that is not known for research and yet you are able to produce a research project with a mentor, it’s definitely a positive. It may not tilt the table completely to one side or the other, but definitely at the time of considering all the qualities of that applicant, it comes out as a very good thing. So yeah, that's true for anything that you may have achieved against challenges. If you have a background of growing up in a rural area or in the inner city in a background that is not conducive to academics and you still fought and made it out, that's a big plus, because that tells me a lot about the resiliency and the grit of that person, and how they're going to do in the future. It's a very dominant predictor.

 

This is really interesting to hear because it sounds like you evaluate and appreciate where one begins from. And of course, it's not the same for everybody. And I'm wondering, have you had the experience with IMGs? Have you ever had one on your program? Would you consider one?

Yeah, we do consider IMGs. The problem for the IMG is that they're going to be seen as a risk, as a higher risk. With a student coming from the States, even when the education varies from medical school to medical school, it is more homogeneous than what you see in other countries. Of course, you use the exams as a proxy to see what the potential is. Yet, that's still not enough to really overcome that you're coming from another place, because they cannot judge you current skills as well as in a native student. They cannot judge your potential as well as in a native student. At least that's the perception. Maybe the perception is wrong, but that perception is there, and you will have to prove beyond the reasonable doubt that you are a great candidate. Because of the competitiveness of the field, it becomes more of an uphill battle for the IMG to obtain a position. Usually, I recommend to IMGs to rotate in the department of interest. Your best option is where they know you the best, where they have seen you in action. That's how you decrease the risk perception. At the end when finalizing the match list, you may be in a position to match, even when you may not be in the first ten spots in the list. You prove in that institution that you are the right candidate, and they will match you.

It used to be the time that you could do a year of general surgery and then be ready for to enter the ENT program in a second year, if a program lost somebody in the process. I think that this has been basically eliminated because of the way that we require people to be trained during that first year. This used to be one of the best pathways for IMGs to really be ready to go.

 

I see. But how can you eliminate the risk?

You have to look at the same things that I mentioned before that we look at for the medical students. And you have to be ranked superior in all of them. That's how you eliminate it. Being known personally helps, communicating personally, rotating, engaging in research, Make yourself known not just in paper, but in person to the programs of your interest.

 

And now I have a question that’s coming from a friend of yours, Dr. Georgalas. So he said “ask him what would he like to be remembered for?”.

Professionally, I think that I will be really happy to be known as a good teacher and mentor. That's really my legacy: the people, the trainees that I leave behind. To be a good teacher, a good mentor for my fellows, my residents, for people that I have interacted with, I think that would be the best. All the rest disappears, right? Endoscopic surgery is the flavor of the decade, but it will be replaced by something else. What usually happens is not that they completely forget about what you did, but it will become just a historical point, sometimes not in a positive view. Each procedure is replaced by something that is technologically superior and gives better results.

Pioneers in the past are looked at with some respect, but you don't really want to do what they were doing in the past, right? You've got to do what is being done now or trigger what will be done in the future. So, to some degree we're all going to be looked at as barbarians for what we do nowadays, and hopefully that's the case. Hopefully medicine will continue to evolve to the point that we will be considered barbarians.

 

Otherwise, we haven't succeeded.

Yeah. So, what else is left? Papers? I think that every single paper I have written becomes obsolete within five years, maybe at the maximum ten. So that's not it. What else is left? I want to be remembered by my patients as someone who took care of them in the best way possible. That's powerful, is receiving any token of gratitude is one of the most fulfilling things in my day-to-day practice. As a member of the of Otolaryngology/Head and Neck Surgeons community, what I want to leave is a legacy of residents and fellows that will be better than what I ever was and that will continue to advance the field for the benefit of humanity.

 

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