Dr. Rehan Rais is an Instructor in Medicine at the Division of Hospital Medicine since June 2024. Originally from Karachi, Pakistan, he completed his medical education at Liaquat National Medical College. Dr. Rais completed his residency in anatomic and clinical pathology at Barnes-Jewish Hospital/Washington University School of Medicine, where he also served as a chief resident and participated in recruiting new residents. He further specialized in hepatobiliary and gastrointestinal pathology and is now a board-certified anatomic and clinical pathologist. Driven by his clinical interests, he pursued additional training in Internal Medicine, completing his internship and residency at Barnes-Jewish Hospital/Washington University School of Medicine. He is actively involved in quality improvement projects focusing on heart failure and improving primary care-patient continuity.
Education
- MBBS: Liaquat National Medical College, Karachi, Pakistan (2013)
- Residency, Anatomic and Clinical Pathology: Barnes-Jewish Hospital/Washington University School of Medicine, St. Louis, MO (2021)
- Residency, Internal Medicine: Barnes-Jewish Hospital/Washington University School of Medicine, St. Louis, MO (2024)
Clinical Interests
General inpatient and outpatient medicine, efficiency in inpatient medicine
Selected Publications and Abstracts
Rais R, Trikalinos NA, Liu J, Chatterjee D. Enterochromaffin-like Cell Hyperplasia-Associated Gastric Neuroendocrine Tumors May Arise in the Setting of Proton Pump Inhibitor Use. Arch Pathol Lab Med. 2022 Mar 1;146(3):366-371.
Du K, Potretzke AM, Rais R, Anderson BG, Han CS, Kim EH, Benabdallah J, Jalaly J, Vetter JM, Paradis AG, Palka JK, Venkatesh R, Figenshau RS. Role of the androgen, estrogen, and progesterone receptors in adherent perinephric fat in robotic partial nephrectomy. J Robot Surg. 2021 Mar 9. doi: 10.1007/s11701-021-01225-4. Epub ahead of print. PMID: 33687664.
Rais R, Chatterjee D, McHenry S, Byrnes K. Poorly Formed Hepatic Granulomas: A Rare Manifestation of Acute T-Cell Mediated Rejection [published online ahead of print, 2020 Jul 10]. Histopathology. 2020;10.1111/his.14207. doi:10.1111/his.14207|
Rais R, Chai J, Blaney E, Liu TC. Unexpected High Prevalence of Lymphocytic Infiltrates in Myenteric Ganglions in Intestinal Inertia. Am J Surg Pathol. 2020 Apr 7. doi: 10.1097/PAS.0000000000001484. [Epub ahead of print] PubMed PMID:32271192.
Farnsworth CW, Logsdon NM, Hayes JE, Rais R, Willrich MA, Gronowski AM. Limitations of Free Light Chain Assays caused by the Matrix Effect. J Appl Lab Med. 2020;5(2):311-319
González I, Bauer PS, Chapman WC Jr, Alipour Z, Rais R, Liu J, Chatterjee D. Clinicopathologic Determinants of Pathologic Treatment Response in Neoadjuvant Treated Rectal Adenocarcinoma. Ann Diagn Pathol. 2020; 45:151452. doi: 10.1016/j.anndiagpath.2019.151452
Weaver M, Rais R, Ritter J, Kushnir V. Endoscopic Mucosal Resection of a Gastric Perineurioma. ACG Case Rep J. 2020 Feb 24;7(2):e00332. doi: 10.14309/crj.0000000000000332. eCollection 2020 Feb. PubMed PMID: 32309518; PubMed Central PMCID: PMC7145183.
Rais R, Thibodeaux SR. A 54-Year-Old Man with Complicated Blood Bank Antibody Testing. Clin Chem. 2019 Dec;65(12):1614. doi: 10.1373/clinchem.2019.307298. PubMed PMID: 31776165.
Selected Presentations
Rais R, Chai J, Blaney E, Liu TC. Unexpected High Prevalence of Lymphocytic Infiltrates in Myenteric Ganglions in Intestinal Inertia. United States and United States and Canadian Academy of Pathology, March 2020, Los Angeles, CA
Rais R, Szymanski J, Jackups R; “Adopting an Evidence-Based Approach for Folate Testing in a Tertiary Care Center.” Academy of Clinical Laboratory Physicians and Scientists, June 2019, Salt Lake City, UT.
Rais R, Chatterjee D;” Histologic association of proton pump inhibitor therapy effects and sporadic gastric neuroendocrine tumors.” Digestive Disease Week, June 2019, San Diego, CA.
González I, Chapman W, Bauer P, Lu E, Rais R, Chatterjee D; “Clinicopathologic Correlation of CXCR4 Expression and Treatment Response in Neoadjuvant Treated Rectal Adenocarcinoma.” United States and United States and Canadian Academy of Pathology 2019 Annual Meeting March 2019, National Harbor Marryland
González I, Bauer P, Chapman W, Rais R, Alipour Z, Lu E, Chatterjee D; “Clinicopathologic Determinants of Pathologic Treatment Response in Neoadjuvant Treated Rectal Adenocarcinomas.” USCAP 2019 Annual Meeting March 16 – March 21, 2019