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Cancer Explained
Symptom Category

Bowel & Abdomen

Symptom Evaluation Guides in Bowel & Abdomen

Bright Red Blood in Stool or on Toilet Paper

How doctors evaluate bright red blood in stool or on toilet paper — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Dark Black Tarry Stools (Melena)

How doctors evaluate dark black tarry stools (melena) — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Persistent Change in Bowel Habits (Diarrhea or Constipation)

How doctors evaluate persistent change in bowel habits (diarrhea or constipation) — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Consistently Pencil-Thin or Narrow Stools

How doctors evaluate consistently pencil-thin or narrow stools — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Persistent Lower Abdominal Pain or Cramping

How doctors evaluate persistent lower abdominal pain or cramping — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Feeling of Incomplete Bowel Evacuation (Tenesmus)

How doctors evaluate feeling of incomplete bowel evacuation (tenesmus) — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Persistent Daily Abdominal Bloating or Increased Abdominal Size

How doctors evaluate persistent daily abdominal bloating or increased abdominal size — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Rapid Fluid Accumulation in Abdomen (Ascites)

How doctors evaluate rapid fluid accumulation in abdomen (ascites) — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Iron-Deficiency Anemia Found on Routine Blood Work

How doctors evaluate iron-deficiency anemia found on routine blood work — persistence, progression, common non-cancerous causes, and when to consult a doctor.

Noticing a Firm Mass or Lump in the Abdomen

How doctors evaluate noticing a firm mass or lump in the abdomen — persistence, progression, common non-cancerous causes, and when to consult a doctor.

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CancerExplained.org provides evidence-based health education to help you prepare for discussions with licensed clinicians. This content does not constitute medical advice, diagnosis, or treatment recommendations. Non-cancerous conditions are far more common for most symptoms. Never disregard or delay professional medical advice because of something you read online.