University Colon & Rectal Surgery

Welcome to the region’s best colorectal facility.

University Colon & Rectal Surgery

At University Colon & Rectal Surgery, our surgeons are experts in laparoscopic or minimally invasive surgery of the colon and rectum, transanal endoscopic microsurgery and the latest treatments for rectal cancers.

As specialists in colorectal surgery, we are very aware that people find it difficult to discuss or attend to colon and rectal problems. That is why our office is very focused on making you feel comfortable and relaxed about your treatment.

Training general surgery residents allows the University Colon & Rectal surgeons to teach future surgeons the latest techniques. By leading the advances in colon and rectal surgery, our surgeons stay at the forefront of colorectal surgery.

Our Services

We offer the latest treatment and techniques for colorectal disorders.

Signs & Symptoms of Colorectal Conditions

A sign is something you see, such as blood in your stool. It is a clue that something is wrong and you may have a disease. A symptom is usually something you feel like a pain in your abdomen (stomach area) that may also indicate something is wrong.

Cancer that starts in different areas of the colon or in the rectum may cause different signs and symptoms. Research shows that when colorectal cancer is detected early, a patient has a much greater chance of complete recovery.

Learn more about the signs and symptoms of colorectal conditions.

Patient Information Forms

Download and print these forms for more information about your visit or procedure.

New Patients

Visiting us for the first time? Let us help you prepare. Download the New Patient Packet

Colonoscopy Patients

Here, you’ll find patient resources for more information about colonoscopy:

ASC Colonoscopy Patient Education

Colonoscopy Prep Instructions-Miralax

Colonoscopy Prep Instructions-Suprep

Colonoscopy Prep Instructions-Golytely

Post-Colonoscopy Instructions

Surgical Patients

Download the information you need regarding your surgery.

Postoperative Instructions for Abdominal Surgery

Postoperative Instructions for Anorectal Surgery

Our Physicians

Mark A. Casillas, Jr., MD, MS, FACS, FASCRS

Associate Professor of Colorectal Surgery

Andrew J. Russ, MD, FACS, FASCRS

Associate Professor of Surgery and Colorectal Surgery

Contact Info
University Colon & Rectal Surgery
1934 Alcoa Highway
Medical Building D, Suite 370
Knoxville, TN, 37920
Fax: 865-305-8840
865-305-5335 Find a Doctor Make an Appointment
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