Medically Reviewed by Dr. Bharat Pothuri, MD, FACG | Updated 06-01-2026GastroDoxs can help determine whether flexible sigmoidoscopy is appropriate for rectal bleeding, lower-colon symptoms, inflammation, bowel habit changes, or abnormal test findings.
Call or book online. The GastroDoxs team can help confirm the right appointment type, preparation needs, insurance information, and follow-up plan for flexible sigmoidoscopy care.
Schedule a consultation if you have rectal bleeding, persistent diarrhea, mucus in stool, lower abdominal pain, rectal pain, abnormal imaging, or suspected lower-colon inflammation.
Flexible sigmoidoscopy allows direct visualization of the rectum and sigmoid colon. Suspicious growths, masses, bleeding areas, or polyps can be biopsied or removed when appropriate.
It may help diagnose hemorrhoids, proctitis, colitis, rectal bleeding sources, lower-colon polyps, inflammation, ulcers, strictures, and some cancers involving the rectum or sigmoid colon.
Flexible sigmoidoscopy examines the lower colon and rectum. Colonoscopy examines the full colon, so it is often preferred when symptoms or risk factors require a complete colon evaluation.
It can help identify inflammation and obtain biopsies from the rectum and lower colon. IBD diagnosis may also require colonoscopy, imaging, stool tests, blood tests, and pathology review.
It can be accurate for problems in the rectum and sigmoid colon, but it does not evaluate the entire colon. Colonoscopy is more complete when full-colon disease must be ruled out.
Sometimes initial findings can be discussed the same day, especially if the source is visible. Final diagnosis may take longer if biopsies or pathology are needed.
Flexible sigmoidoscopy directly views the lower colon and can take biopsies. CT colonography creates imaging of the colon but cannot remove polyps or biopsy tissue during the test.
It can diagnose visible lower-colon and rectal conditions such as inflammation, bleeding sources, polyps, ulcers, strictures, proctitis, colitis, and suspicious growths.
Possible symptoms include lower abdominal pain, rectal bleeding, mucus in stool, diarrhea, constipation, urgency, narrow stools, bloating, or changes in bowel habits.
A doctor may choose sigmoidoscopy when symptoms appear limited to the lower colon or rectum, when targeted follow-up is needed, or when a shorter exam is clinically appropriate.
Book online or call GastroDoxs to review symptoms, procedure timing, preparation, insurance details, and follow-up options for flexible sigmoidoscopy.