About Rachel A. Mariani, MD
Rachel A. Mariani, MD, is a pediatric and hematopathologist, who serves as the section director of hematopathology, and medical director of the Flow Cytometry Laboratory and the Hematology Laboratories at Phoenix Children's. As a specialist in her fields, Dr. Mariani has unique training to diagnose blood disorders and cancers that affect children.
Dr. Mariani joined Phoenix Children's because of the organization's commitment to excellence. She enjoys working with a team of diverse individuals who collaborate to provide the best care for patients and their families.
Dr. Mariani completed her education and medical training in Chicago. She graduated with a bachelor's degree from the University of Chicago and completed her medical degree and residency training in anatomic and clinical pathology at the University of Illinois College of Medicine in Chicago. She finished her fellowship training in hematopathology and pediatric pathology at the Northwestern University Feinberg School of Medicine. Dr. Mariani currently holds faculty appointments at Mayo Clinic College of Medicine and Science and University of Arizona College of Medicine.
Board certified in clinical pathology, anatomic pathology, hematology pathology, and pediatric pathology, Dr. Mariani has authored chapters in medical textbooks and has published peer-reviewed research in the American Journal of Hematology and the Journal of Pediatric Hematology/Oncology, among many others. She serves on several national professional committees and has been an invited faculty speaker and presenter at national and international medical conferences and meetings.
"I became interested in medicine at a young age while being treated by my pediatric allergist and immunologist. He explained that my symptoms were caused by my immune system, and he taught me about white blood cells," says Dr. Mariani. "As I got older, he gave me medical literature to read and taught me more about immunology and its role in diseases. I became interested in the cellular and unseen causes of disease."
Dr. Mariani aims to treat every patient as if they are a friend or family. She strives to provide a comprehensive evaluation for any disease process and report the diagnosis in a way providers, patients and their families can understand.
Medical School / Education
University of Illinois College of Medicine at Chicago, IL
Residency
(Anatomical and Clinical Pathology) University of Illinois College of Medicine at Chicago, IL
Fellowship
(Hematopathology & Pediatric Pathology) Northwestern University Feinberg School of Medicine, Chicago, IL
Pathology-Anatomic/Pathology-Clinical, Subspecialty- Pathology-Hematology, Pathology-Pediatric
American Board of Pathology
Academic Affiliations
Assistant Professor, Department of Pathology and Laboratory Medicine, Mayo Clinic Alix School of Medicine
Assistant Professor, Department of Pathology and Laboratory Medicine, Department of Child Health, University of Arizona College of Medicine - Phoenix
Mariani RA, Courville EL. Reactive lymphadenopathy in the pediatric population with a focus on potential mimics of lymphoma. Semin Diagn Pathol. 2023 Jun 1:S0740-2570(23)00062-X. doi: 10.1053/j.semdp.2023.05.004. Epub ahead of print. PMID: 37295994.
Carll TC, Mariani R, Schafernak K, Snowberger T, Jacobsen J, Gomez E, Su L. Peripheral blood smear detection of asymptomatic central line infection in a patient with sickle cell disease. J Pediatr Hematol Oncol. 2022. doi: 10.1097/MPH.0000000000002432. PMID: 35180760.
Mariani R, Jennings L, Zhang S, Bhat R, Gong S. Morphologic and immunophenotypic differences in Juvenile myelomonocytic leukemias with CBL and other canonical RAS-pathway gene mutations: a single institutional experience. J Pediatr Hematol Oncol. 2021;43(6):e819-e825. doi: 10.1097/MPH.0000000000002149. PMID: 33769390.
Mariani R, King R, Liu H. EBV-positive plasmacytomas with plasmablastic morphology involving a nasopharyngeal angiofibroma in an adolescent. Pediatr Dev Pathol. 2021 Mar 8:1093526621999022. doi: 10.1177/1093526621999022. PMID: 33683983
Zhang M, Mariani R, Gong M, Kirschmann D, Caparelli E, Wallace N, Turner R, Lu X, Gao J, Yap KL, Gong S. Distinctive clinicopathologic features of monomorphic B-cell post-transplant lymphoproliferative disorders in children. Juvenile myelomonocytic leukemias with CBL and other canonical RAS-pathway gene mutations. Pediatr Dev Pathol. 2021;24(4):318-326. doi: 10.1177/10935266211007254. PMID: 33872109.
Mariani R, Kadakia R, Arva N. Noninvasive encapsulated follicular variant of papillary thyroid carcinoma: should it also be reclassified in children? Pediatr Blood Cancer. 2018 Jun;65(6):e26966. PMID: 2938052
