Page views in 2023: 1,910
Page views in 2024 to date: 229
General Testimonials at CAP (2023) at USCAP (2023)

For more video testimonials, see here.

"This is literally one of the best, most complete, and thorough write-ups on Pathology Outlines of a specific disease entity! It also has superb charts, and a very detailed DDx which is extremely helpful from a clinical and practical standpoint! I wish all the writeups attain this caliber of high quality. Please keep up the terrific work! Since I work in a reference laboratory, I use your website many times on a daily basis, and especially use the IHC results in my Surg Path cases." Steve Kargas, M.D., Ph.D., Georgia, USA, 21 December 2023

"Pathology Outlines is a one-stop-shop for comprehensive latest information in the field. The website is incredibly helpful to medical students who have a range of backgrounds. The references are valuable to those who wish to pursue in-depth information. The illustrations and summaries are very helpful with case reports for rare occurrences." Kedar K. V. Mate B.Sc., M.Sc., Ph.D., Montreal, Canada, 4 December 2023

"Congratulations on your beautiful website." Grissel Trujillo de Santiago, Ph.D., Monterrey, México, 30 November 2023

"I've been using PathOut since I was a resident and I've always found it to be up to date, comprehensive, and thorough. And, I love the new sample path reports on topics" Lili Lee, M.D., New York, USA, 8 November 2023

"Just popping in to say that we at St. Vincent’s University Hospital absolutely LOVE the games! It’s educational and fun. Please can you do more!!!" Albert van de Venter, M.B.Ch.B, Dublin, Ireland, 8 September 2023

"I wanted to tell you that I really appreciate the work you do at PathologyOutlines. Whenever I open up a topic I know I will be getting concise and usable material. PathologyOutlines in general is great for the pathologist working in the trenches - I'm a solo guy in the middle of nowhere far from residency." Cary Gottlieb, M.D., Michigan, USA, 30 May 2023

"Congrats! You provide a wonderfully useful service!" Charles Childers, M.D., Anatomic and Clinical Pathologist, Medical Director, North Carolina, USA, 21 April 2023

"I use PathologyOutlines as my go to source. It’s the only way to keep up to date!" Dr. Phillip McKee, 18 March 2023

"I love all the work you put into Pathology Outlines. I just posted a blog post on our website about the top online pathology learning resources and included your channel on the list. Thank you for all the work you put into the educational material you provide free online." Abigail Diepeveen, Lumea, Utah, 17 November 2022

"Your website is the best resource to navigate through most things related to my pathology practice daily since the first day of residency. Many thanks for your hard work, Nat!" Yevgeniy Linnik, M.D., FCAP, Indiana, 17 November 2022

"Pathology outlines has been and will always be our trusted source of information and knowledge that we all feel proud of contributing to." Hayan Abo Samra, M.D., Qatar, 5 November 2022

"I do hope you know how purely awesome PathologyOutlines is for all practicing pathologists." Gheorghe-Emilian Olteanu, M.D., Ph.D., Romania, 17 September 2022

"I use extensively. In fact it's my first go to site when reporting. So comprehensive and detailed at the same time. Thank you team, for this labour of love. You guys rock!" Dr. Sandhya Ramachandran, Andhra Pradesh, India, 18 August 2022

"Congratulations and thanks for the new updated version of Pathology outlines textbook. It has once again become a quality resource for a quick check for the most up to date information. I used it a lot as a new attending several years ago and recently have come back to using it often during my general surgical pathology sign outs after a period of being dissatisfied with the quality of information." Dr. P.S., New York, 12 March 2022

"Love your website. Has been extremely helpful ever since residency days!" Gloria Lewis, M.D., Ohio, 27 January 2022

"I am a regular follower of the pathology outlines website. Thanks for all your contributions. You have an excellent team of experts and their inputs are very useful and guide us while reporting difficult cases." Ravindra Sawant, M.D., FRCpath, Consultant Pathologist, United Kingdom, 19 January 2022

"I have done my post graduate exam in Pakistan and I was fond of Ackerman. As I started preparing for this UK based exam, I had to consult many books to prepare one topic. As I came to know about pathology outlines a Web based excellent source of knowledge which is updated, and quite enough for exam preparation. Now I don't need to consult different books for one topic which is quite time saving as well. I want to congratulate you for providing this service to humanity." Dr. Naila Atif, Pakistan, 27 December 2021

"I started recommending Pathology Outlines to other pathologists in the developing world in 2008 in my talks about “on-line tools helpful in pathology practice” and have continued to use it quite regularly in my own practice long before and since. It is the one reference that is nearly ALWAYS open on my desktop! It has continued to get better over time and has become even more useful!" Lewis A. Hassell, M.D., OUHSC, Oklahoma, 20 December 2021

"You are doing a phenomenal job and I am so grateful for the knowledge that you provide." Purva Trivedi, M.D., India, 18 November 2021

"It is great to see you here! Your online textbook has always been a ready help here in Zaria, Nigeria. Kudos to a wonderful team!" Dr. Halima Aliyu, Nigeria, 28 October 2021

"I really like the sample pathology report." Dr. V, Texas, 27 September 2021

"Pathology Outlines is by far and away my first stop when trying to quickly find pathology information relevant to the case at hand." Christopher Chandler, M.D., Washington, 19 August 2021

"I use Pathology Outlines daily and have it bookmarked on my favourites bar at work and home!" Karen Talia, M.D., Australia, 18 August 2021

"Thank you for the website and outstanding contribution to the pathology community!" A.I., M.D., USA, 30 July 2021

" is a fantastic up to date valuable resource for all things related to pathology. I utilize it everyday and always find superb discussions." Richard E. Zitwer, M.D., New Jersey, 20 June 2021

"Your portal is really a great achievement, thank you very much! You are helping pathologists every single day all around the world." M.E., M.D., Germany, 15 June 2021

"I would be happy to contribute to, as I am myself a regular user of this website, and I think it is a brilliant initiative." Joanna Cyrta, M.D., Paris, France, 12 June 2021

"I think is an outstanding website and visit it almost every day!" Katherine Boylan, M.D., Utah, 29 May 2021

"I wish to wholeheartedly thank you for this amazing site ( which is the Holy Grail and Go To, for all Residents and Consultants, in Pathology." Poonam Elhence, M.D., India, 29 May 2021

"I have been benefiting from for so many years and had been always wondering: who is this genius who created this website and how could I find him/her to say: Thank you? Finally I read your story on The Pathologist! I have been practicing pathology for 16 years, still, I check your website about every day!" M.Y., Connecticut, 26 May 2021

"I am a big fan of, which has really grown into a special resource. Many of my past colleagues and even former fellows are authors." Dr. M. C., Vermont, 21 May 2021

"I myself use quite often and I believe it is a fantastic resource." Miglena K. Komforti, D.O., Cleveland Clinic, 6 May 2021

"Nat, you have a fantastic skill of providing the latest developments to practicing pathologists. Your website is a great help in routine and complex case reporting." Madhu Dewan M.D., England, 21 April 2021

"I LOVE your site!! Most pathologists I know do. Please keep up the great work Nat, you have my highest praises!" Mark Rodacker, M.D., Ph.D., Sanford Health, North Dakota, 6 April 2021

"I really appreciate the great effort involved in creating such a website. Science is for everyone. Thanks to all!" Ali Kahila, M.D., Ph.D., M.Sc., Damascus University, Damascus, Syria, 23 February 2021

" is a phenomenal resource for our profession, both trainees and attendings alike." Melanie C. Bois, M.D., Minnesota, 18 February 2021

"I would like to compliment Dr. Kim Ely on the discussion of Chronic Sialadenitis. It found it informative and well illustrated. I find the in general a great fountain of pathological knowledge. Keep up the great work." Richard E. Zitwer, M.D., 18 December 2020

"Many thanks to visionaries like you for pushing the boundaries of internet innovation and pathology knowledge integration. The simplicity of the website design and its utility across domains is unparalleled, making it a masterpiece of communications-design." Gaurav Sharma, M.D., Michigan, 13 December 2020

"What a genius idea and a great distribution to all the Pathologists around the world. Thanks so much from all Pathologists around the world" Firas Al-Delfi, M.D., FCAP , UAE, 12 December 2020

"Congratulations Dr. Nat Pernick, this is a really useful tool for Pathologists." Karen Villar Zarra, M.D., Spain, 12 December 2020

" is an inseparable part of day to day work of many of us. Thank you for creating this awesome easy to use resources." Sara Javidiparsijani, M.D., FCAP, New York, 12 December 2020

" has been indispensable in my tissue image analysis work for immuno-oncology. This is my go-to place to check all the biomarkers. I included it in the list of my top 10 pathology resources for image analysis." Aleksandra Żuraw DVM Ph.D. DACVP, Charles River Laboratories, 12 December 2020

"Thank you for being a click away during our every day reporting! We appreciate the good pictures and constant update on topics." Anu Shibu Varghese, M.D., VPS Health Care, AbuDhabi, UAE, 7 December 2020

"Congratulations for the excellent website which is certainly a useful tool for students and practitioners." S. R. Prabhu, MDS, FDSRCS, University of Queensland, Australia, 28 October 2020

"Thank you for this website. I'm a general pathologist and often you are a rapid reference and support for my professional practice." Gabriela Garza, M.D., Guadalajara, Jalisco, Mexico, 5 October 2020

"It is always a pleasure to contribute to your website." Marc Pusztaszeri, M.D., McGill University, Montreal, Quebec, Canada, 30 September 2020

"I always wait for case of month and I really love it. Thank you so much for great educational cases.” Daria Matveeva, M.D., A. Tsyb Medical Radiological Research Center, Obninsk, Russia, 10 September 2020

"Great scope-side reference. Website is improving all the time." Lawrence J. Fanelly, M.D., Ohio, 9 September 2020

"I want to thank you for your fantastic resource, just discovered it and recommended to my colleagues. Keep up the good work!" Dmytro Unukovych, M.D., Ph.D., Consultant Surgeon, Capio S:t Görans Hospital, Stockholm, Sweden, 24 August 2020

"So many thanks, we appreciate your effort and your great website!" Edmond Sabo, M.D., Director of Department of Pathology, Carmel Medical Center, Haifa, Israel, 26 May 2020

"Despite having an expansive (and expensive!) library of pathology books, is the first resource I consult for difficult cases. I always know I will be getting correct and up-to-date information from the leading pathologists in their respective fields. The site is easy to search and the pages are well-organized with clear, concise information: from epidemiologic data to microscopic appearance to immunohistochemistry to differential diagnoses to consider, all of the information I need is right there. I would recommend this invaluable resource to any pathologist." Kat Montgomery, M.D., M.P.H., 26 May 2020

"Dr. Pernick founded, which is arguably THE most visited pathology website in the world. It is a free resource for pathology education available worldwide. He not only founded this site, but through his tireless efforts over the years, he has built a team of authors and editors to continually revise it and keep it up to date and useful. Long before Twitter and Facebook existed, Nat Pernick was innovating in the online space. His vision and persistence have paid off enormously by providing the entire pathology world with a free pathology encyclopedia available at their fingertips. I suspect that almost every pathologist in the world has used and benefited from at some point, and many do so on a regular basis. Dr. Pernick has played a huge role in laying "a solid foundation" for all of us via this site." Jerad M. Gardner, M.D., University of Arkansas for Medical Sciences, 14 April 2020

"I think that Path Outlines is a great resource - I use it all the time for looking at jobs, fellowship advertising, and looking at CD markers and stains." Michael A. Linden M.D., Ph.D., University of Minnesota, 24 February 2020

"I have personally been using for years into my career as a Histopathologist. It is a widely used and up to date database that is highly esteemed by our community." Maria Soares, M.D., United Kingdom, 09 February 2020

"Pathology Outlines is truly an easily accessible awesome resource for pathologists (in training and in practice). Thank you for taking this initiative and keeping at it." Varsha Manucha, M.D., Mississippi, 22 November 2019

"Your site is excellent. I work part time and do not have to carry heavy books with me, instead I always use your website." Matjaz Sebenik, M.D., Florida, 29 October 2019

"As the owner of a business that advertises on PathologyOutlines, I cannot emphasize how much value this has provided my company. Over the years we have heard many times “We saw your ad on” This website has extreme exposure to the pathology marketplace evidenced by their growth over the past few years. There are 18,000 pathologists in the USA, this is my target market. This website gets 2.5 million page views per month…I am fairly certain our growth and name recognition is tied to our exposure from advertising on this site. I recommend it highly." Mick Raich, CEO Vachette Pathology

"Thanks again so much for continuing to work with us - you have some really fascinating cases!" Michael Schubert, Editor, The Pathologist, 08 July 2019

"You are democratizing the knowledge" Axel, Germany, 18 May 2019

"A great website and a great concept! Congratulations!" Dr. Firas Al-Delfi, Dubai, 15 April 2019

"You don't know how happy I was, to see that residents in a well known, rural medical school were using Pathoutlines, the same website used by US residents. You are doing a lot to bridge knowledge and equalize the world. AIPNA (Association of Indian Pathologists in North America) salutes you. You are bridging the digital divide." Megha Joshi, M.D., Massachusetts, 23 March 2019

"I was very impressed with the number of pathologists who responded. I would recommend Pathology Outlines as a great place to advertise." D. Carlson, M.D., Massachusetts, 21 March 2019

"This is such a great resource that you are providing and you give it away for free. I love seeing websites that understand the value of providing a quality resource for free. It is the old what goes around comes around routine." Anonymous comment from our blog, 29 November 2018

"You guys are truly a Godsend for people like me learning pathology where there are few teachers (Zambia). Please keep it up and thank you." Anonymous, 14 November 2018

"Thank you SO MUCH for being on top of this! You guys are a pleasure to work with!" L. Olson, USCAP, 1 November 2018

"Dear Nat, I am currently head of pathology at James Cook University. I have started teaching trainees at Fiji and PNG. I am using your web resources in teaching. Appreciate your good work. Thanks." Shashidhar Venkatesh Murthy, M.D., 21 August 2018

"Hi dear sirs, I just wanted to thank you for your very good active pathology site and wish you the best." R. Yaghmae, M.D., 19 June 2018

"This e-mail is to thank you for your excellent site. It facilitates my diagnostic work in Pathology. When I put my microscope on every day at 5am, at the same time I open your site and frequently consult it to give a better diagnosis for my patients. I thank you in the name of all Brazilian pathologists. Please, do not allow your site to disapear." Paulo Roberto Grimaldi Oliveira, MD, 6 June 2018

"Congratulations for your contribution and commitment with maintaining PO, it is becoming our consult encyclopedia." Jaime A. Mejía, MD, Florida, 14 May 2018

"You save my life on a regular basis." Laura Malone, M.D., Maryland, 21 March 2018

"I have used it every single day since I started practicing 11 years ago. It feels like home there." Shannon Keil, M.D., Ohio, 9 February 2018

"Your site has been so helpful to me for many years. I am grateful, thank you for your hard work keeping the site running and continually improving it." Dr. Michael Argyres, University of Colorado, 9 February 2018

"Big thanks to the team of Pathology outlines for being the fastest search engine in this 'tat' world where I get authentic to the point information in matter of secs, way easier than searching in textbooks." Comment from Testimonials page, 3 November 2017

"Your initiative and effort - it has been a blessing for all pathologists of this planet, you know what I mean." Dr. Mejia, 3 October 2017

"Your website is really useful-congrats for the achievement of building such a useful diagnostic resource!" Dr. Iuga, 2 June 2017

"Greetings from Nigeria, you're doing a great job on PathologyOutlines." Dr. Folaranmi, 16 March 2017

"It was a pleasure meeting you. And as indicated in person, my gratitude to PathologyOutlines for providing an outstanding service to the Pathologist community." Dr. Zafar, 9 March 2017

"The discussion and the quiz by Dr. Nat Pernick are just excellent and makes this an interesting case. Thank you once again to the entire team at Pathologyoutlines for an excellent endeavor!" Dr. Gandhi, 1 March 2017

"Over the years I have benefited greatly from your website and learned a lot." Dr. Chinoy, 19 February 2017

"I'm a Histopathology Postgraduate trainee from Sri Lanka. Pathology Outlines is a very useful website for my studies. Wish you all the best!!" Email comment, 13 February 2017

"Great pitfall, and nice lesson to be learned." M. Dewan, M.D. regarding Case of the Week #410, 15 December 2016

"Thank you very much. It is [an] interesting case & nice case presentation & helpful brief explanation." Comment posted regarding Case of the Week #406, 3 November 2016

"Thanks for having this amazing website." T. Raj, M.D., 17 October 2016

"Thanks to Pathology Outlines for crystallizing essential pathology information and beaming it worldwide." G. Bhas, M.D., 24 September 2016

"Your Pathologyoutlines site is fantastic, very great job." M. Dabobash, M.D., Jordan, 30 August 2016

"I have always visited pathology outlines for various reasons. Excellent resource for pathologists. Thank you." R. Veeramachaneni, M.D., Texas, 16 August 2016

"Thank you for your attention and for keeping this wonderful website up-to-date. I find it very useful on a daily basis." O. Ramuz, M.D., Ph.D., France, 5 August 2016

"Thanks for a great website which I use every day at my practice. Kind Regards." S. Naicker, M.D., 3 August 2016

"For many years I received the mailings from P.O. This (one) from Dr. Zynger was the best email I received ever! Keep up the good work. Thank you very much." G. Lopes, M.D., Brazil, 6 June 2016

"Thank you very much Dr. Pernick, for sharing with all the Pathological Community these interesting cases!!"J. Arrinda, M.D., 11 May 2016

"I am a practicing pathologist (Grady Memorial Hospital, Delaware, OH). First let me say that I find PathologyOutlines VERY USEFUL as a reference."G. Shecket, M.D., 2 May 2016

"Informative website. Deserves award! Thanks guys for keeping us updated."S. Ahmed, M.D., 22 March 2016

"I have been retired from private practice pathology for the past 2.5 years. I used your site every day for years. I loved it and if only it was availble during my residency. Great job!" B. Shiro, M.D., 20 February 2016

" has been an amazing resource for me through my career." J. Primavera, M.D., New Jersey, 15 February 2016

"Thank you for the interesting cases in the case of the week series. They are extremely helpful for my every day practice and board preparation." Qi Wang, M.D., Louisiana, 15 January 2016

"I'm a practicing pathologist and a long-time fan of Y'all got me through residency and have been enormously helpful in practice." AB, 8 January 2016

"@Pathoutlines love your website!!! So helpful to budding pathologists, with up to date, quick at your fingertips information. Vital!!!" Kristin Regan, DO, 5 October 2015

"That is great, you probably don't know how much you are helping pathology community all over the world." Z. Asgher M.D., 24 September 2015

"BTW, your website is great, whether someone is looking for jobs, education or conferences. Please continue the good work and congratulations." R. Bhargava M.D., 18 August 2015

"I am a practicing histopathologist in a private lab in Pretoria, South Africa. I just wanted to thank you for your superb website. It is absolutely invaluable to me, and indeed to all my colleagues. I use it on a daily basis and am eternally grateful that you provide this wealth of information free of charge and make it so easily accessible. It is in everybody's best interests that up to date information be readily available - ultimately we all want to render a good service to our patients and your website is instrumental in doing that. Keep up the good work." Dr. Robert J. Barnetson, 3 July 2015

"We pathologists and pathology trainees at Sri Ramachandra very often and we all love it. Thanks for your noble service....." Dr. R., 27 June 2015

"Thanks, and love the website. I utilize it extensively while on surg path." B. McDonald, 19 June 2015

"Thank you for running Pathology Outlines. I have found it extremely useful during the course of my training." L. Lippincott, 5 June 2015

"As a loyal customer of pathology outlines, I always go to the website first whenever I have questions." Yumei Fu, M.D., Ph.D., 15 May 2015

"I love your website and I use it regularly to quickly look up facts, images, typical staining patterns and specific CD markers/stains. I got my first job by replying to a posting on the PathOutlines jobs page. I also enjoy the case of the week. Keep up the great work!" Lindsay Williams, M.D., 27 May 2015

"You guys deserve a hall of fame icon in pathology." Dr. Jaime Arturo Mejia, 13 April 2015

"No thanks's the only way I can thank for your amazing job raising such a helpful and updated resource. I use it every day for quick reference. Keep up the good work! Hope to see you in an upcoming conference." Dr. Jorge Billoch, 19 March 2015

"You have a great site. Thank you for keeping it going." Dr. R, 9 February 2015

"I am one of the biggest fans of your page. Well done." Dr. M, 23 January 2015

"I love the new website look! It's also much easier to navigate. Thanks a lot for the great work you and the team are doing." Dr. W, 18 December 2014

"Your site has become the virtual AFIP..." Dr. M, 12 December 2014

"It has been nice working with you all these years. You have been very helpful." Ms. B, 5 December 2014

"I have been following your emails, sent to me regularly via the "Case of the Week". I find them quite interesting and wish to sincerely thank you and all the contributors for a such an informative academic feast." Dr. G, 29 September 2014

"I heard about your fellowship page from word of mouth from a number of residents and fellows who describe Pathology Outlines as the "go to" pathology website among pathology trainees." Dr. S, 22 September 2014

"We are happy with the service provided by PathologyOutlines, and we have benefited significantly from the visibility and traffic that you site provides for...our books." Mr. C, 17 September 2014

"Thanks for what you do. Those of us in the trenches appreciate it." Dr. S, 8 September 2014

"Thanks for providing us, surgical pathologists, with such good program." Dr. F, 27 August 2014

"One really appreciates the time and effort you put into making PathologyOutlines available online. It is a very valuable source of information for residents and practicing pathologists." Dr. A, 18 July 2014

"You guys do good work. Be proud." Mr. R, 10 July 2014

"I am such a big fan of your site; I think more than anything else it keeps me in the loop as far as the world of pathology is concerned. I mean we can go for months without seeing a single IHC slide! I'm pretty confident though Path Outlines will help me pull through my M.Med exams (Boards equivalent I guess) this November." Dr. Z, 14 June 2014

"Your web site is really very good and useful in routine diagnostics." Dr. V, 5 May 2014

"Thanks for all you do in this site. I find it interesting. " Dr. F, 28 April 2014

"I have used your educational website often during my many years in teaching sessions with residents and have found it very useful as a very quick reference in autopsy pathology signout." Dr. D, 27 March 2014

"It's easy to look at the website. When looking for information I need on an entity quickly, your website is always the first place I go." Dr. L, 19 March 2014

"I use pathology outlines often and really appreciate having it as a resource. Thanks so much for such a great website!" Dr. J, 28 February 2014

"I like the web site and visit frequently for info on conferences and pathology questions." Dr. A, 19 February 2014

"I really enjoy using It's a great resource I've used throughout my residency." Dr. B, 16 February 2014

"You know I like your site but Case of the Week is definitely the highlight!" Dr. S, 12 February 2014

"I really like your summaries of the CD information, very useful." Mr. Z, 21 January 2014, China

"I really appreciate all that you guys do to make PathologyOutlines a great resource for all of us" Dr. S, 3 December 2013, Ohio

"Thank you for the interesting informative cases." 2 December 2013, by email

"Thank you for having a great pathology educational website. Pathologyoutlines had been of great help for my board examinations. The website is always helpful and filled with practical information." Dr. R, 19 November 2013, by email

"I really like consulting your website very frequently and find it very very helpful to me during my daily practice." Dr. K, 25 October 2013, Georgia

"Thanks again for an excellent site. Use it daily, all the time." Dr. S, 16 October 2013, by email

"Thank you for your website. It's a fantastic site for us pathologists. We've met few times at USCAP and I'm always happy with the clever new features you are adding." Dr. K, 30 September 2013, by email

"I wanted to again thank you for all of your time and effort with getting us up and advertising on You have been great!" Mr. H, 20 September 2013, by email

Video testimonials regarding at USCAP (2022) at USCAP (2020) at USCAP (2019) at CAP (2018) at ASCP (2018) at
USCAP annual meeting (2018) at
ASCP annual meeting (2017)

I Love PathOut - Aleksandra Zuraw, D.V.M.

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