Rectal Bleeding Seoul — evaluation & diagnosis by a specialist, in English.
Rectal bleeding evaluation and colonoscopy at Apgujeong Hana Clinic, Apgujeong, Gangnam. Board-certified gastroenterologist Dr. Yang Jae-hoon — accurate diagnosis of rectal bleeding causes in English, with same-day colonoscopy when indicated.
Rectal bleeding — never ignore it, always investigate it.
Rectal bleeding — blood passed from the rectum or noticed in the toilet or on toilet paper — is one of the most important symptoms that should always be evaluated by a gastroenterologist. While the majority of cases have benign causes such as haemorrhoids or anal fissures, rectal bleeding is also a key warning sign of more serious conditions including colorectal polyps, inflammatory bowel disease and colorectal cancer.
For expats and international patients in Seoul, rectal bleeding can be particularly anxiety-inducing when you are unsure where to seek care or how to explain symptoms in Korean. At Apgujeong Hana Clinic, Dr. Yang Jae-hoon — a board-certified gastroenterologist with endoscopy sub-specialist certification — evaluates and investigates rectal bleeding entirely in English, with colonoscopy available within the same week when clinically indicated.
The only definitive way to determine the cause of rectal bleeding is colonoscopy — a direct visual examination of the entire colon and rectum. A physical examination or blood test alone is not sufficient to exclude serious causes. Colonoscopy is the gold standard investigation for rectal bleeding and can be performed at our Apgujeong clinic under IV sedation for a completely painless experience.
What causes rectal bleeding — from common to serious.
Rectal bleeding has many possible causes — ranging from completely benign and easily treated conditions to serious diseases that require prompt diagnosis and treatment. The colour, volume, timing and associated symptoms of rectal bleeding provide important clues, but only colonoscopy provides a definitive diagnosis.
What the colour and appearance of blood can tell you.
The colour and appearance of rectal bleeding — while not diagnostic on its own — provides important information about the likely location of bleeding in the gastrointestinal tract. This helps guide the urgency and type of investigation needed.
| Blood Appearance | Likely Location | Common Causes | Urgency |
|---|---|---|---|
| Bright red on toilet paper only | Anus or lower rectum | Haemorrhoids, anal fissure | Book this week |
| Bright red dripping into toilet | Lower rectum | Internal haemorrhoids, rectal polyp | Book soon — colonoscopy needed |
| Bright red blood mixed in stool | Left colon or rectum | Polyps, colorectal cancer, IBD, diverticular | Book immediately — urgent colonoscopy |
| Dark red or maroon blood in stool | Right colon or small intestine | Diverticular bleeding, IBD, right-sided cancer | Urgent — may need emergency evaluation |
| Black, tarry, foul-smelling stool | Upper GI — stomach or duodenum | Peptic ulcer, gastric cancer, varices | EMERGENCY — go to ER immediately |
| Large amounts of blood — any colour | Any location | Diverticular bleed, angiodysplasia, varices | EMERGENCY — go to ER immediately |
How rectal bleeding is investigated — and why colonoscopy is essential.
Many patients with rectal bleeding assume — or are told — that haemorrhoids are the cause and that no further investigation is needed. This assumption is potentially dangerous. Haemorrhoids and colorectal cancer can coexist, and the presence of haemorrhoids does not exclude a more serious underlying cause. The only way to definitively investigate rectal bleeding is colonoscopy.
Rectal bleeding should never be assumed benign without investigation.
The most common mistake patients and even some doctors make with rectal bleeding is assuming it is haemorrhoids without performing a colonoscopy. These are the facts that make this assumption potentially dangerous.
Rectal bleeding evaluation at Apgujeong Hana Clinic — step by step.
Your questions answered.
Concerned about rectal bleeding? WhatsApp our English-friendly team at Apgujeong Hana Clinic — we respond promptly.
You may also be interested in these.
Rectal bleeding? Get a definitive answer in Seoul.
Colonoscopy for rectal bleeding at Apgujeong Hana Clinic, Gangnam. Board-certified gastroenterologist. Same-week appointments. English results.