Radiation proctitis

What it is

From: Orphanet

Radiation proctitis is a rare rectal disease directly induced by pelvic radiotherapy and characterized by rectal bleeding, change in bowel habits, tenesmus and sepsis.

Reported clinical features and what the terms mean

The following findings are associated with this condition in Orphanet. They are not a checklist for diagnosing yourself, and they do not all occur in every affected person. Some are examination, imaging or laboratory findings that cannot be recognised at home.

The frequency labels describe how often a finding was reported among people with the condition in the source. They do not give the chance that a person with that symptom has the condition. Definitions below reproduce HPO terminology; they explain the term, not the likely severity in an individual.

Abnormality of connective tissue · Very frequent (99-80%)

Any abnormality of the soft tissues, including both connective tissue (tendons, ligaments, fascia, fibrous tissues, and fat).

Abnormality of the rectum · Very frequent (99-80%)

An abnormaltiy of the rectum, the final segment of the large intestine that stores solid waste until it passes through the anus.

Abnormality of the vasculature · Very frequent (99-80%)

An abnormality of the vasculature.

Colitis · Very frequent (99-80%)

Colitis refers to an inflammation of the colon and is often used to describe an inflammation of the large intestine (colon, cecum and rectum). Colitides may be acute and self-limited or chronic, and broadly fit into the category of digestive diseases.

Rectal abscess · Very frequent (99-80%)

A collection of pus in the area of the rectum.

Rectal fistula · Very frequent (99-80%)

The presence of a fistula affecting the rectum.

Abnormal vascular morphology · Very frequent (99-80%)

Abnormality of gastrointestinal vasculature · Very frequent (99-80%)

Abdominal pain · Frequent (79-30%)

An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) and perceived to originate in the abdomen.

Anal pain · Frequent (79-30%)

Pain in and around the anus or rectum (perianal region).

Constipation · Frequent (79-30%)

Infrequent or difficult evacuation of feces.

Ulcerative colitis · Frequent (79-30%)

A chronic inflammatory bowel disease that includes characteristic ulcers, or open sores, in the colon. The main symptom of active disease is usually constant diarrhea mixed with blood, of gradual onset and intermittent periods of exacerbated symptoms contrasting with periods that are relatively symptom-free. In contrast to Crohn's disease this special form of colitis begins in the distal parts of the rectum, spreads continually upwards and affects only mucose and submucose tissue of the colon.

Arteritis · Occasional (29-5%)

Arterial inflammation.

Intestinal obstruction · Occasional (29-5%)

Blockage or impairment of the normal flow of the contents of the intestine towards the anal canal.

Other findings in the same source

From: Orphanet

Additional reported features include Sepsis (Occasional (29-5%)); Tenesmus (Occasional (29-5%)); Bowel incontinence (Very rare (<4-1%)); Diarrhea (Very rare (<4-1%)); Hematochezia (Very rare (<4-1%)). This is a selected summary, not a complete description of the condition.

When it may begin

From: Orphanet

Adult

Inheritance in the source

From: Orphanet

Not applicable

Frequency and the population described

From: Orphanet

Point prevalence: 1-5 / 10 000; Europe; Value and class.

Which doctor should you see?

The suggested department for discussing Radiation proctitis is Gastroenterology, with a gastroenterologist as the relevant type of clinician. General physician / Family Medicine; paediatrician for children. Referral depends on symptoms.

This is an editorial referral starting point. The appropriate clinic depends on the person’s age, symptoms, previous diagnosis and local services. The first clinician can decide whether another specialty or a team is needed; a department label does not confirm the diagnosis.

How to prepare for an assessment

Bring a short timeline of the main symptoms: when they first appeared, whether they are constant or episodic, what seems to change them, and how they affect daily activities. Include previous reports, discharge summaries, current medicines and supplements, allergies, and any relevant family history. A dated record is more useful than trying to match every feature in an online article.

Ask the clinician what is already established and what remains uncertain. If a test is suggested, ask what question it answers, what its limitations are and how the result would change the next step. The information here is not an instruction to arrange every possible test. In children, bring growth, developmental and school information if it is relevant to the concern.

• Which digestive symptoms or nutritional changes matter most?
• What question would an endoscopy, scan or laboratory test answer if one is proposed?
• How should persistent pain, bleeding or difficulty eating be followed up?

Treatment discussions and follow-up

Where the source describes treatments, these are an overview of possible care, not a prescription for an individual. Ask which option applies to the confirmed diagnosis, what benefit is expected, what adverse effects to watch for and how progress will be assessed. Availability, approvals and local practice can differ from the country described in the source.

Before leaving the appointment, clarify the next review date, who will communicate results, and whom to contact if the situation changes. Discuss difficulties with sleep, work, school, mobility, eating or emotional wellbeing when these are relevant. Practical support may require coordination between the treating clinician and other services.

The collected references do not establish a complete prevention or long-term outlook section for this entry. Missing information should not be interpreted as proof that prevention is impossible or that a particular outcome is inevitable. Ask what is known for the exact subtype, stage and personal circumstances, and which uncertainties remain.

When to seek emergency help

Severe breathing difficulty, collapse, new stroke-like symptoms, a seizure that is prolonged or repeated without recovery, uncontrolled major bleeding, or an immediate risk of self-harm require emergency help. In India, call 112 or reach the nearest emergency department. This is a general, non-exhaustive warning list; it is not a condition-specific triage tool.