Juan Rosai

Juan Rosai, M.D. (August 20, 1940 – July 7, 2020) was an Italian-born American physician who contributed to clinical research and education in the specialty of surgical pathology. He was the principal author and editor of a major textbook in that field, and he characterized novel medical conditions such as Rosai-Dorfman disease and the desmoplastic small round cell tumor. Rosai is also well-known because of his role as teacher, mentor and consultant to many American and international surgical pathologists.

Juan Rosai, M.D.
Born
Giovanni Rosai

August 20, 1940
Poppi, Italy
DiedJuly 7, 2020(2020-07-07) (aged 79)
Milan, Italy
NationalityItalian, American
Alma materUniversity of Buenos Aires, Argentina & Washington University in St. Louis, Missouri
Known forResearch in Surgical pathology
Scientific career
FieldsMedicine & Pathology
InfluencesEduardo Lascano and Lauren Ackerman

Early life and education

Juan Rosai was born in Poppi, a little town near Florence, province of Arezzo, in the region of Tuscany, Italy.[1] When he was eight years old, his parents emigrated to Buenos Aires, Argentina because of the economic problems in Italy after World War II.[2] His original first name was Giovanni Rosai, but after his family settled in Argentina his first name was changed to the equivalent Spanish name Juan.[1] At the age of 15, Rosai enrolled in the School of Medicine at the University of Buenos Aires.[2] During his third year of medical school, he met Professor Eduardo Lascano, a pathologist who influenced young Rosai's interest in that discipline following the teachings of Pío del Río Hortega, Dr. Lascano mentor. Dr. Rosai earned the M.D. degree at the age of 21, and then he did the residency training in Anatomic Pathology at the same university, under the direction of Dr. Lascano. While serving subsequently as a house officer in pathology at the Regional Hospital of Mar del Plata, Rosai was introduced to Dr. Lauren Ackerman at a medical conference in Argentina.[2] Ackerman invited Rosai to train with him in St. Louis, Missouri in the United States.

Career in the United States

Rosai completed his residency and fellowship in anatomic pathology at Washington University School of Medicine and Barnes Hospital under Lauren Ackerman's mentoring.[2][3] Subsequently, he remained on the faculty of Washington University until 1974 when, at the age of 34, Rosai was appointed Professor & Director of Anatomic Pathology at the University of Minnesota. He left there in 1985 for an identical position at Yale University School of Medicine in New Haven, Connecticut, where he stayed until 1991.[3] From 1991 to 1999, Rosai was the James Ewing Alumni Professor and Chairman of Pathology at Memorial Sloan-Kettering Cancer Center in New York City.[3]

Work in Italy and the United States

Juan Rosai maintained ties to Italy, his home country, throughout his life. In 1982–1983 he spent a sabbatical year at the University of Florence and the University of Bologna. In 2000 Rosai moved permanently back to Italy as Chairman of the Department of Anatomic Pathology at the Istituto Nazionale dei Tumori (National Cancer Institute) in Milan, Italy. Later, in 2005, he created the Center for Oncologic Pathology Consultations, located at the Centro Diagnostico Italiano in Milan, where he continued his consultation and educational activities focusing on oncological surgical pathology.

During his work in Italy, Rosai maintained academic connections to the United States as adjunct professor of pathology at the Weill Cornell Medical College of Cornell University, visiting professor of pathology at Harvard University and Massachusetts General Hospital, and senior consulting pathologist at Genzyme Genetics (LabCorp). He also was consultant pathologist for the Department of Pathology of the University of Utah and ARUP Laboratories, providing surgical pathology consultation through telepathology while still working in Milan.

Illness and death

Dr. Rosai developed Parkinson's disease in his late 60s. It was well-controlled for many years, but the complications of that condition eventually took his life in July, 2020. He was 79 years old.

Scientific publications

Rosai was an author of more than 400 scientific peer-reviewed papers on topics in pathology,[4] including the seminal descriptions of entities such as sinus histiocytosis with massive lymphadenopathy (Rosai-Dorfman disease), desmoplastic small round cell tumor, spindle-cell epithelial tumor with thymus-like differentiation of the thyroid, and sclerosing angiomatoid nodular transformation of the spleen.[5][6][7][8] He was Editor-in-Chief of the International Journal of Surgical Pathology until 2014 and served as a member of the editorial boards of several other pathology journals. Rosai was also Editor-in-Chief of the 3rd Series of the Atlas of Tumor Pathology of the Armed Forces Institute of Pathology (AFIP), and author of AFIP fascicles on Tumors of the Thymus[9] and Tumors of the Thyroid Gland,[10] and a book on the history of American surgical pathology called Guiding the Surgeon's Hand.[11] He has also edited or co-edited 13 other books.[4]

Perhaps the most famous publication by Juan Rosai is his textbook called Rosai and Ackerman's Surgical Pathology. This classic surgical pathology textbook was first published in 1953 by Rosai's mentor, Dr. Lauren Ackerman, as a pathology book focused on the differential diagnosis and morphological features with clinical significance. Over the years, the new editions of Dr. Ackerman's book were continued by Dr. Rosai until its tenth edition published in 2011. Rosai's textbook is well known among pathologists due to its clear and didactic style, including illustrations as examples of key diagnostic features. Rosai's pathology textbook has been influential in the education in surgical pathology across the world and it has been translated to several languages including Spanish, Chinese, Italian and Croatian besides its original edition in English language. Rosai and Ackerman's Surgical Pathology textbook is currently continued in its 11th edition (2018) by a team of experts in the field of pathology.

The Juan Rosai Collection of Surgical Pathology Seminars

During his career, Juan Rosai accumulated a comprehensive collection of slide seminars including histopathology slides of interesting and educational pathological cases with the comments by connoted pathologists. In 2010 Rosai donated his entire seminars collection as an open and free educational resource. Thanks to a collaborative effort between Rosai, the United States and Canadian Academy of Pathology (USCAP) and Aperio ePathology the slide seminars are available as digital pathology files which can be freely accessed by pathologists across the world.[12] The collection consists of 18,439 cases originally presented at 1,495 pathology seminars, and comprises digital images of the original histopathological slides, clinical history, and diagnostic summaries, along with commentaries by Rosai and other experts.

Professional awards and honors

In appreciation of his contributions to pathology, Rosai has received formal recognition from academic institutions around the world, as follows:

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  • The Rosai's Collection of Surgical Pathology Seminars, free educational website sponsored by the United States and Canadian Academy of Pathology and Aperio Technologies.
  • Conversations with Pathologists. Interview with Juan Rosai, for the book project A Matter of Life and Death by Sue Armstrong, sponsored by the Pathological Society of Great Britain and Ireland (ISBN 1847675816; ISBN 978-1847675811)

Other Pertinent Topics

References
  1. http://www.uscap.org/site~/99th/distinguished.htm Archived 2011-03-08 at the Wayback Machine, Accessed 17 February 2010.
  2. "Juan Rosai - Full Transcript". Conversations with Pathologists. March 12, 2008. Retrieved August 30, 2019.
  3. "Juan Rosai". Who Named It?. Retrieved August 30, 2019.
  4. Search Results for author Rosai J on PubMed.
  5. Rosai, J.; Dorfman, RF (1969). "Sinus histiocytosis with massive lymphadenopathy. A newly recognized benign clinicopathological entity". Archives of Pathology. 87 (1): 63–70. PMID 5782438.
  6. Gerald, WL; Rosai, J. (1989). "Case 2. Desmoplastic small cell tumor with divergent differentiation". Pediatric Pathology. 9 (2): 177–83. doi:10.3109/15513818909022347. PMID 2473463.
  7. Chan, JK; Rosai, J. (1991). "Tumors of the neck showing thymic or related branchial pouch differentiation: A unifying concept". Human Pathology. 22 (4): 349–67. doi:10.1016/0046-8177(91)90083-2. PMID 2050369.
  8. Martel, M.; Cheuk, W.; Lombardi, L.; Lifschitz-Mercer, B.; Chan, JK; Rosai, J. (2004). "Sclerosing angiomatoid nodular transformation (SANT): Report of 25 cases of a distinctive benign splenic lesion". The American Journal of Surgical Pathology. 28 (10): 1268–79. doi:10.1097/01.pas.0000138004.54274.d3. PMID 15371942.
  9. Rosai J, Levine GD: Tumors of the Thymus, Armed Forces Institute of Pathology, Washington, D.C., 1976.
  10. Rosai J, Carcangiu M, DeLellis R: Tumors of the Thyroid Gland, Armed Forces Institute of Pathology, Washington, D.C., 1992.
  11. Rosai J (Ed): Guiding the Surgeon's Hand, The History of American Surgical Pathology, American Registry of Pathology, Washington, D.C., 1997.
  12. "The Juan Rosai Collection". Retrieved August 30, 2019.
  13. Klimstra DS, Gerald WL. The 2006 Fred Waldorf Stewart Award recipient Juan Rosai, MD. Am J Surg Pathol. 2007 Apr;31(4):649-51.
  15. http://www.iaphomepage.org/IAPNews2'11.pdf Archived 2013-08-28 at the Wayback Machine, Accessed 9-20-2011. IAP International News bulletin, Vol 52, No. 2, 2011
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