It is often the case that, although there are no obvious symptoms, there are still signs that something is not quite right with your digestive system. Such signs may include iron-deficiency anaemia, fatigue or a positive result from a routine stool test. These signs often indicate occult bleeding, which refers to bleeding originating from some part of the digestive system that is not visible to the naked eye. Although this condition can be frightening, it is important to know that modern medicine has effective tools for identifying and treating the underlying causes.
In this article, we explain in detail exactly what occult bleeding is, what the underlying causes might be, and what diagnostic steps lead to an accurate diagnosis. We will discuss treatment options and also when it is essential to consult a gastroenterologist. Our aim is to provide clear and reassuring information to help you face the examination and any necessary treatment with greater confidence.
What is occult (hidden) bleeding?
Occult bleeding (often referred to simply as „hidden blood” in medical jargon) refers to gastrointestinal bleeding that is so minimal that it does not alter the colour of the stools and is therefore not visible to the naked eye. Patients are often asymptomatic, or experience only the general symptoms of iron-deficiency anaemia resulting from chronic blood loss, such as pallor, weakness or fatigue.
According to the medical definition, occult bleeding is present when a patient has persistent or recurrent bleeding, the source of which remains unknown even after a thorough endoscopic examination (gastroscopy and colonoscopy). This may take the form of visible (overt) bleeding, such as melena or bloody stools, but in most cases it is only indicated by iron-deficiency anaemia or a positive faecal occult blood test.
Possible causes of hidden bleeding
As the digestive system is a long and complex network of tubes, the source of the bleeding could be anywhere.
1. Causes relating to the upper alimentary tract
- Peptic ulcer disease: Stomach or duodenal ulcers are one of the most common sources of occult bleeding.
- Inflammation: Severe gastritis or oesophagitis can also cause oozing bleeding.
- Tumours: Benign or malignant lesions in the oesophagus or stomach.
2. Causes relating to the lower alimentary tract
- Colon polyps: These mucosal growths often bleed almost imperceptibly. Removing them can prevent the development of cancer.
- Colorectal cancer: The surface of the tumours is fragile, so they often bleed.
- Inflammatory bowel diseases (IBD): Bleeding is a common feature of the active phase of Crohn’s disease or ulcerative colitis.
- Diverticulosis: Even small bulges in the intestinal wall can be sources of bleeding.
3. Bleeding from the small intestine
If gastroscopy and colonoscopy are negative, the source of the bleeding is often to be found in the small intestine, for example in the form of angiodysplasias (abnormal dilation of blood vessels) or tumours of the small intestine.
How can it be diagnosed?
From At the Endomedix Gastroenterology Centre The investigation is structured in stages:
- Fecal blood test: We use modern, immunological tests to detect human blood in stool samples.
- Laboratory tests: A blood test to check for iron deficiency and anaemia.
- Endoscopy: Gastroscopy and colonoscopy to identify the source and, if necessary, provide immediate treatment (e.g. polyp removal).
- Capsule endoscopy: If the imaging tests do not provide an answer, the entire small intestine can be examined using a swallowable camera capsule.
Why should we not neglect it?
Hidden bleeding is often the body’s „cry for help”. Early-stage bowel cancer or precancerous polyps often cause no other symptoms apart from this slight bleeding. If detected in time, these conditions can be cured!.
When to consult a specialist: Maintaining liver health is a complex task, in which prevention plays a key role. However, if you experience any symptoms or are in a high-risk group, do not hesitate to consult a specialist. The Endomedix Gastroenterology Centre is equipped with modern diagnostic tools and staffed by highly qualified specialists to provide an accurate diagnosis and develop a personalised treatment plan. Early detection and appropriate treatment can prevent serious, irreversible liver damage and significantly improve your quality of life. Don’t let misconceptions influence your healthcare decisions! Get your information from reliable sources and take the first step towards a healthy liver today!
