Ira J. Bleiweiss, MD

Professor of Pathology and Laboratory Medicine at the Hospital of the University of Pennsylvania
Department: Pathology and Laboratory Medicine
Contact information
Hospital of the University of Pennsylvania
Founders 6
3400 Spruce St.
Philadelphia, PA 19104
Founders 6
3400 Spruce St.
Philadelphia, PA 19104
Office: 215-662-2569
Fax: 215-615-0463
Fax: 215-615-0463
Email:
ira.bleiweiss@uphs.upenn.edu
ira.bleiweiss@uphs.upenn.edu
Education:
BA (Biological Basis of Behavior)
University of Pennsylvania, 1980.
MD
St. George's University School of Medicine, Grenada, West Indies, 1984.
Permanent linkBA (Biological Basis of Behavior)
University of Pennsylvania, 1980.
MD
St. George's University School of Medicine, Grenada, West Indies, 1984.
Selected Publications
Narasimhamurthy M, Le A, Boruah N, Moses R, Kelly G, Bleiweiss I, Maxwell KN, Nayak A.: Clinicopathologic Features of Breast Tumors in Germline TP53 Variant-Associated Li-Fraumeni Syndrome. Am J Surg Pathol 49: 195-205, Mar 2025.Tondi Resta I, Goldbach MM, Tchou JC, Bleiweiss IJ, Nayak A: Pathologic Features and Residual Cancer Burden (RCB) after Neoadjuvant Endocrine Therapy (NET) in Hormone Receptor Positive Breast Cancer (HR+ BC). Mod Pathol March 2024 Notes: Poster accepted for presentation at the United States and Canadian Academy Pathologists Annual Meeting.
Lennerz JK, Pantanowitz L, Amin MB, et al. : Ensuring remote diagnostics for pathologists: an open letter to the US Congress. Nat Med 12: 2453-2455, December 2022.
Narasimhamurthy M, Good M, Desai H, Le A, Bleiweiss IJ, Maxwell K, Nayak A: Clinico-pathological features of breast tumors associated with Li-Fraumeni Syndrome. Mod Pathology 35: 196-198, March 2022 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2021.
Zhao X, Nayak A, Bleiweiss IJ: Does the status of the tumor bed at surgical margins affect local recurrence and overall prognosis in patients undergoing lumpectomy status post neoadjuvant therapy. Mod Pathology 35: 224-225, March 2022 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2021.
Hawrot K, Shulman LN, Bleiweiss IJ, Wilkie EJ, Jankowitz RC, Laughlin AI: Time to Treatment Initiation for Breast Cancer during the 2020 COVID-19 Pandemic. JCO Oncology Practice 17(9): 534-540, September 2021.
Assi J, Bleiweiss I, Nayak A: Pathologic characterization of Non-Malignant Breast Lesions Detected by 3D-Digital Breast Tomosynthesis (DBT) versus 2D-Digital Mammography (DM). Laboratory Investigation 101 (suppl 1): 79-81, March 2021 Notes: Virtual poster presentation at the United States and Canadian Academy Pathologists Annual Meeting, Virtual Meeting, March 2021.
Bleiweiss IJ, Nayak A: Iatrogenic Issues in Breast Pathology. The Breast Journal 26(6): 1179-1184, June 2020.
Peters J, Bleiweiss I, Zhang P, Feldman M, Dumoff K, Nayak A: Early Results of PD-L1 Staining and Atezolizumab (atezo) Treatment (Tx) in Patients with Metastatic Triple Negative Breast Carcinoma (TNBC) Mod Pathol 33(Suppl. 2): 237-238, March 2020 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2020.
Modi M, Bleiweiss I, Grenko R, Jaffer S, Toorens E, Ganguly T, Nayak A: Syringomatous Adenoma of Nipple (SAN), Low Grade Adenosquamous Carcinoma of Breast (LGASCA) and Microcystic Adnexal Carcinoma (MAC) of Skin: Molecular Analysis of these Rare Entities with Similar Histologic Features. Mod Pathol 33(Suppl. 2): 214, March 2020 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2020