Physician’s Profile

Rosanna Abellar, MD

Department of Pathology & Cell Biology
Division of Anatomic Pathology

Born and raised in the Philippines, Dr. Rosanna Abellar migrated to the US after obtaining her medical degree from Pamantasan Ng Lungsod Ng Maynila (University of the City of Manila). She started her pathology training at St. Barnabas Medical Center in Livingston, New Jersey followed by a fellowship in Bone and Soft Tissue Pathology at the University of Washington in Seattle. She later pursued subspecialty training at Brown University affiliated hospitals Women and Infants Hospital/Hasbro Children’s Hospital in Rhode Island studying Developmental and Pediatric Pathology.  


Board Certificates
Pathology - Pediatric
Pathology - Anatomic
Areas of Expertise:
  • Perinatal Pathology

Chao CM, Yahya F, Moiseenko A, Tiozzo C, Shrestha A, Ahmadvand N, El Agha E, Quantius J, Dilai S, Kheirollahi V, Jones M, Wilhem J, Carraro G, Ehrhardt H, Zimmer KP, Barreto G, Ahlbrecht K, Morty RE, Herold S, Abellar RG, Seeger W, Schermuly R, Zhang JS, Minoo P, Bellusci S. Hgf10 deficiency is causative for lethality in a mouse model of bronchopulmonary dysplasia. J Pathol. 2017 Jan;241(1):91-103.

Randis T, Gelber S, Hooven T, Abellar R, Akabas L, Lewis E, Walker L,Byland L,Nizet V, Ratner A. Preterm birth and intrauterine fetal demise in a murine model of ascending Group Streptococcus infection.  J Infectious Dis 2014 Jul 15; 210(2):265-73.

Llanos C, Friedman D,Izmily P, Saxena A, Tseng C, Dische R, Abellar R, Halushka M, Clancy R, Buyon J. Anatomic and pathologic findings in hearts from fetuses and infants with cardiac manifestations of neonatal lupus. Rheumatology 2012 Jun; 51(6):1086-92

Alvarez D, Clancy R, Zavadil J, Abellar R, Barrat F, Buyon J. A novel role of endothelin-1 in linking TLR7-mediated inflammation to fibrosis in congenital heart block. Journ Biol Chem 2011 Sep 2; 286(35):30444-54.

 De Paepe ME, Shapiro S, Greco D, Luks VL, Abellar RG, Luks CH, Luks FL. Placental markers of twin-twin transfusion syndrome in diamniotic monochorionic twins: A morphometric analysis of deep artery to vein anastomoses. Placenta 2010 Apr; 31 (4):269-76.

Abellar RG, Pepperell J, Greco D, Gundogan F, Kostadinov S, Schwartz J, Tantravahi U, De Paepe ME.  Effects of chemotherapy during pregnancy on the placenta. Pediatr Dev Pathol 2009 Jan-Feb; 12 (1):35-41.