Dr. R. Patrick Dorion

R. PATRICK DORION, M.D.
Anatomic Pathology, Clinical Pathology, Hematology


100 North Academy Avenue
Danville, PA 17822-1920
800-695-6491

Dr. Dorion is an Associate of Geisinger Medical Laboratories at Geisinger Medical Center.

Education:

He received his M.D. from the Universidad de San Carlos de Guatemala, and received his pathology residency training at the Geisinger Medical Center in Danville, Pennsylvania. He completed a fellowship in hematology at the Medical College of Virginia in Richmond.

Certifications:

Dr. Dorion is board certified in anatomic and clinical pathology as well as hematology. His areas of specialization include hematopathology and coagulation studies, head and neck pathology, soft tissue and bone pathology, thyroid, and gastrointestinal pathology.

Recent Academic Activity

Publications in Peer-Reviewed Journals:

Dorion A, Crabtree G, Dorion RP. Use of Polarized Light in the Diagnosis of “Fuzz” Granuloma in the Conjunctiva of a Child. Case Rep Ophthalmol.2020; In:Press,

Rohr B, Dorion RP. What's eating you? Clothes moth. Cutis.2018; 101(6):413-414,

Cooper JD, Dorion RP, Smith JL. A rare case of Waterhouse-Friderichsen syndrome caused by Capnocytophaga canimorsus in an immunocompetent patient. Infection.2015; Feb:13,

Beer T, Dorion RP. Angioimmunoblastic T-Cell Lymphoma Presenting with an Acute Serologic Epstein-Barr Virus Profile. Hematol Rep.2015; 7(2):5893,

Beer T, Dorion RP. A case of angiosarcoma metastatic to bone marrow. J Case Rep Onc Ther.2015; 1(1):010117,

Cooper JD, Dorion RP, Smith JL. A rare case of Waterhouse-Friderichsen syndrome caused by Capnocytophaga canimorsus in an immunocompetent patient. Infecation.2015; 43(5):599-602,

Brown R, Dorion RP, Trowbridge C, Stammers A, Fit, W, Davis J. Algorithmic and consultative integration of transfusion medicine and coagulation: a personalized medicine approach with reduced blood component utilization. Ann Clin Lab Sci.2011; 41(3):211-216,

Boctor FN, Dorion RP. Malaria and hereditary elliptocytosis. Am J Hematol.2008; 83:753,

Forman SB, Tyler WB, Dorion RP, Elston DM. Breast carcinoma in a male: Importance of hormonal receptor expression and possibility of a familial cancer syndrome. J Am Acad Dermatol.2007; 57:731-732,

Sewell DL, Elston DM, Dorion RP . "Anisotrichosis": a novel term to describe pattern alopecia. J Am Acad Dermatol.2007; 56:856,

Stammers A, Dorion RP, Trowbridge C, Yen B, Klayman M, Murdock JD, Woods E, Gilbert C. Coagulation management of a patient with factor V Leiden mutation, lupus anticoagulant, and activated protein C resistance: a case report. Perfusion.2005; 20:115-120,

Dorion RP, Shaw JH. Intracytoplasmic Filamentous Inclusions in the Peripheral Blood of a Patient With Chronic Lymphocytic Leukemia, a Bright Field, Electron Microscopic, Immunofluorescent, and Flow Cytometric Study. Arch Pathol Lab Med.2003; 127:618-620,

Other Publications:

Egnatios GL, Ferringer T, Dorion RP. Multiple skeletal fractures and asymptomatic foot nodule.. ASDP Online Interactive Case Study, April, 2014.

Cooper JD, Dometita D, Hasan A, Dorion RP, Wolk DM, Martinez RM. "Orange" you glad you checked the buffy coat. Clinical Microbiology Newsletter 37(2), 9-13, 2015.

Dorion RP. Case Studies in Hematology and Coagulation. 2nd edition. Gene Gulatil, Joanne Flicko-O’Hara and John Kraus Eds ASCP, Case Set, 2019.

Abstracts, Posters, and Other Presentations:

Tsang P, Harrison HH, Perry D, Olson J, Dorion P, Schuerch C. Heparin-Induced Thrombocytopenia: Optimizing Laboratory Utilization and Anticoagulation Stewardship. Abstract (submitted) American Society for Clinical Pathology Annual Meeting, National Harbor, Maryland, October 2017.

Harrison HH, Tutaeva V, Dorion RP, Haynes AE, Schuerch C, Tsang P, Zhang K, Zhang X, Hematopathology Utilization Team, Kip NS. Utilization of Fluorescent In Situ Hybridization (FISH) Probe Panels in Routine Clinical Hematopathology Practice: Lymphoid and Plasma Cell Disorders. Abstract (submitted) American Society for Clinical Pathology Annual Meeting, Chicago, Illinois, September 2017.

Harrison HH, Dorion RP, Kip NS, Tsang P, Wehler A, Zhang K, Zhang M. Statistical benchmarks for HemeFISH utilization in a multi-hospital integrated delivery system. Abstract CAP Annual Meeting, Las Vegas, NV, September 25-28, 2016.

Harrison HH, Adler M, Kimmich, D, Knowles-Tuchman M, Costello D, Nowack, R, Mika A, Rockwell S, Shaeffer L, Dorion P, Grifone T, Olson J, Tsang P, Wilkerson M, Yu E, and the Analytical QC Team. Use of Sigma-based QC to monitor hematology and coagulation testing in an expending, multi-instrument, multi-site, integrated healthcare system. Abstract AACC Annual Meeting, Philadelphia PA, July 31-August 4, 2016.

Harrison HH, Young D, Sargent D, Labarbera J, Fereck C, Fitt W, Kimmich D, Kremitske D, Lopatka M, Sharretts S, Smeal K, Dorion P, Rolston R, Wilkerson M, Yu E, Jones JB. Expansion of a Multisite, Advanced Analytical QC Program to include Prothrombin Time Testing using Sigma Statistics Based on Auto-Generated Peer Values. Poster American Association for Clinical Chemistry Annual Meeting, Houston, TX, July 2013.

Lin F, Liu H, Dorion RP, Zhang K, Pellitteri PK, Schuerch C, Wilkerson M, Meschter S. Comparison of clinicopathologic features, preoperative fine needle aspiration, and expression of immunohistochemical markers in thyroid papillary microcarcinoma and thyroid papillary carcinoma. Poster Presentation USCAP Meeting, Boston, March 7-13, 2009.

Dorion RP, Jianhui Shi, Zhang K, Schuerch C, Lin F. Utility of S100P in differentiating adenocarcinoma of the lung from papillary carcinoma and follicular carcinoma of the thyroid. Abstract USCAP Meeting, Denver, CO, March 1-7,2008.

PL Zhang, Zhang K, Dorion RP, Liu H, Lin F. Calretinin is a valid marker to assist diagnosis of Hirschsprung disease in rectal suction biopsies without use of acetylcholinesterase staining. Abstract USCAP Meeting, Denver, CO, March 1-7, 2008.

Textbook Chapters

Dorion RP, Zhang X. Bone Marrow. In Handbook of Practical Immunohistochemistry: Frequently Asked Questions. Lin F, Prichard JW, eds. New York: Springer; 2011, 493-500.

Dorion RP, Zhang X. Bone Marrow. In Handbook of Practical Immunohistochemistry: Frequently Asked Questions, 2nd ed. Lin F, Prichard JW, Liu H, Wilkerson M, Chen ZM, eds. New York: Springer; 2015, 629-640.

Dorion RP et al. Acute Leukemias, Acute Myeloid Leukemia with t(8;21) and Acute Ph-Lymphoblastic Leukemia. In Case Studies in Hematology and Coagulation 2nd edition. Gene Gulati G. Filicko-O'Hara J, Krause, JR, eds. Alexandria, Virginia: American Society of Clinical Oncology; 2019, 700.