Constipation, diarrhea, fatigue, weight loss, black stools, and low hemoglobin can be signs that colorectal cancer has progressed. An oncologist from the Molecular Diagnostic Center CMD Ramenskoye, part of the Central Epidemiological Research Institute under Rospotrebnadzor, notes that these symptoms may appear in various cancers and benign conditions alike, which means they deserve careful evaluation. According to the expert, vigilance is essential because subtle symptoms often prompt a broader examination that should be offered to healthy individuals as well as those with complaints.
Common indicators of colorectal cancer can include weight loss, fatigue, intermittent constipation or diarrhea, cramping abdominal pain, and a drop in hemoglobin or an elevated erythrocyte sedimentation rate. While these signs may overlap with other illnesses, they still warrant prompt medical review to differentiate malignant conditions from benign processes.
The doctor emphasizes that many of these symptoms emerge as the disease advances and tumors enlarge, potentially obstructing the intestinal lumen. Routine screening tests can detect cancer early, sometimes before symptoms arise. Screening is a proactive measure that may be recommended for individuals without noticeable symptoms to catch disease in its initial stages.
One particularly notable symptom of colorectal cancer is gastrointestinal bleeding. This bleeding can originate in the upper gastrointestinal tract and may present as tarry, dark stools. Such a presentation can be associated with gastric ulcers, stomach cancer, or cancers of the small intestine or ascending colon. When present, this symptom requires urgent medical assessment, including procedures such as fibrogastroscopy and colonoscopy, to identify the bleeding source and determine appropriate treatment, which may include surgical intervention. The emphasis is on timely evaluation and management to prevent serious outcomes.
Historical research has sought ways to improve survival from colorectal cancer, underscoring the importance of early detection and effective treatment strategies. Ongoing advances in screening, diagnostics, and multidisciplinary care continue to influence outcomes for patients across North America and beyond. All healthcare providers agree that awareness and timely action can significantly impact prognosis and quality of life. (attribution: CMD Ramenskoye Central Epidemiological Research Institute, Rospotrebnadzor)