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Lisa Susan Poritz, M.D.

Office Location

Penn State Hershey Surgical Specialties
500 University Drive, UPC II, Suite 3100
Hershey, PA 17033
Tel: 800-243-1455 / 717-531-8887 Fax: 717-531-0646


Colon & Rectal Surgery

Patient Services Provided

Colon & Rectal Cancer Crohn's Disease Ulcerative Colitis Fecal Incontinence Laparoscopic Colon & Rectal Surgery

Professional Education

Fellowship, Surgery, Colon/Rectal, University of Toronto - Post Graduate Training (2000) Residency, Surgery, General, Penn State Milton S. Hershey Medical Center (1999) M.D., Northwestern University Medical School (1992)

Research Interests

Inflammatory Bowel Disease
Intestinal Inflammation
Intestinal Permeability
Tight Junction Proteins
Signal Transduction
Graft versus Host Disease
Colorectal Cancer
Leukocyte Adhesion Molecules


Messaris E, Sehgal R, Deiling S, Koltun WA, Stewart D, McKenna K, Poritz LS.
Dehydration is the most common indication for readmission after diverting ileostomy creation.
Dis Colon Rectum. 2012 Feb;55(2):175-80.
Poritz LS, Sehgal R, Hartnett K, Berg A, Koltun WA.
Tumor volume and percent positive lymph nodes as a predictor of 5-year survival in colorectal cancer.
Surgery. 2011 Oct;150(4):649-55.
Pastor DM, Irby RB, Poritz LS.
Tumor necrosis factor alpha induces p53 up-regulated modulator of apoptosis expression in colorectal cancer cell lines.
Dis Colon Rectum. 2010 Mar;53(3):257-63.
Pastor DM, Pauli EM, Koltun WA, Haluck RS, Shope TR, Poritz LS.
Parastomal hernia repair: a single center experience.
JSLS. 2009 Apr-Jun;13(2):170-5.
Poritz LS, Lebo MA, Bobb AD, Ardell CM, Koltun WA.
Management of peristomal pyoderma gangrenosum.
J Am Coll Surg. 2008 Feb;206(2):311-5.