Warning! This common digestive issue could signal a hidden cancer risk; doctors explain when to act

Time of India

2 days ago

Oesophageal cancer, often stealthy and lethal, ranks among the top ten cancers globally. Early symptoms are easily mistaken for common digestive issues, leading to late diagnoses and reduced survival rates. Chronic acid reflux, or GERD, is a significant risk factor, potentially causing Barrett's oesophagus, a precursor to cancer.
Oesophageal cancer ranks as the tenth most common cancer worldwide and remains one of the most lethal due to its stealthy progression and low survival rates. Often undetected until it reaches advanced stages, this cancer affects the oesophagus, the muscular tube that connects the throat to the stomach.
One of the core challenges lies in its early presentation: symptoms are either minimal or mistaken for common digestive issues, allowing the disease to progress unnoticed. According to the Cleveland Clinic, early-stage oesophageal cancer typically does not cause significant symptoms, resulting in delayed diagnosis and reduced treatment options. A study published in 2017 highlighted that nearly 90 per cent of patients diagnosed with this cancer do not survive beyond a decade, emphasising the need for better awareness and early detection.
The link between chronic acid reflux, or gastroesophageal reflux disease (GERD), and oesophageal cancer is becoming more evident. As ongoing research sheds light on subtle warning signs, medical experts stress the importance of not ignoring recurring digestive symptoms.
What is oesophageal cancer?
Oesophageal cancer originates in the inner lining of the oesophagus. There are two main types: adenocarcinoma, more common in Western countries and typically associated with chronic acid reflux and obesity, and squamous cell carcinoma, which is more prevalent globally and often linked to smoking and alcohol use.
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Both types interfere with the oesophagus's ability to carry food and liquids from the throat to the stomach.
The cancer tends to develop slowly but progresses aggressively once symptoms become apparent. Unfortunately, by the time a diagnosis is made, the disease often has spread to nearby tissues or organs.
The role of chronic acid reflux in cancer development
Gastroesophageal reflux disease, or GERD, occurs when stomach acid flows back into the oesophagus, irritating its lining.
While many individuals experience occasional acid reflux, persistent symptoms may indicate chronic GERD. The Cleveland Clinic notes that long-term exposure to stomach acid can lead to inflammation, cellular damage, and eventually a condition called Barrett's oesophagus. Barrett's oesophagus is characterised by abnormal changes in the oesophageal lining and is considered a precursor to oesophageal adenocarcinoma.
Dr. Wendi LeBrett, a gastroenterology expert, has drawn attention to the subtle and often overlooked symptoms of acid reflux that may signal a deeper issue. She states that although heartburn is a common sign, not all individuals with GERD experience this symptom. In fact, as many as one in three people with acid reflux may have no noticeable heartburn at all.
Unusual warning signs: What to watch for
According to recent findings shared by Dr. LeBrett, several lesser-known symptoms could point to chronic acid reflux and potentially early oesophageal cancer. These include:
Persistent nighttime coughing caused by acid entering the respiratory tract
Breathing difficulties linked to airway irritation
Worsening asthma symptoms
Difficulty swallowing, especially with dry or solid foods
Unexpected dental issues, including yellowing teeth, cracks, and enamel erosion
These symptoms are frequently dismissed as isolated issues.
However, recurring patterns—especially when accompanied by typical digestive discomfort—warrant medical evaluation.
The risk of ignoring acid reflux
Chronic acid reflux is not just an inconvenience. The Cleveland Clinic emphasises that repeated acid exposure can create lasting damage in the oesophagus, particularly if untreated. Long-term inflammation can lead to cellular changes that increase cancer risk. Barrett's oesophagus, for instance, is often silent but significantly heightens the chance of developing oesophageal cancer over time.
Healthcare providers recommend not only treating GERD symptoms but also monitoring for potential complications. This includes routine screenings for patients with longstanding reflux, especially those over 50, those with obesity, or a history of smoking.
Importance of early detection
Due to the asymptomatic nature of early-stage oesophageal cancer, many patients are only diagnosed when the cancer is already advanced. At this point, treatment options are limited, and outcomes tend to be poor.
Data published in the World Journal of Gastroenterology reinforces that five-year survival rates drop drastically as the disease progresses beyond the oesophagus.
The importance of early detection is further underscored by the benefits of timely intervention. If identified early, oesophageal cancer can be managed with less invasive procedures, increasing survival chances. Endoscopic therapies and surgical resection, when performed before metastasis, can significantly improve outcomes.
Why dental visits matter in oesophageal cancer
Dentists may play a surprising role in early detection. Acid reflux can damage the teeth through enamel erosion, a condition often spotted during routine dental check-ups. Yellowing, increased sensitivity, and cracking may not seem connected to cancer risk, but could be early clues pointing to chronic acid reflux. When such signs are combined with other symptoms, they can prompt timely medical referrals and further testing.
What experts recommend
According to The Economic Times report, medical professionals emphasise vigilance when it comes to persistent digestive symptoms. Individuals experiencing chronic heartburn, cough, or swallowing difficulties should consult a physician for proper assessment. In some cases, an upper endoscopy may be recommended to visualise the oesophagus and detect abnormal changes.
The American Gastroenterological Association also advises patients with known risk factors—such as obesity, male gender, smoking, and a family history of oesophageal cancer—to undergo regular screenings, especially if GERD symptoms persist beyond a few weeks despite treatment.
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