Esophageal Lesion: Causes, Symptoms, and Treatments

An esophageal lesion is any area of abnormal tissue in the esophagus, the muscular tube that carries food from your throat to your stomach. These lesions range from harmless growths and shallow erosions to deep ulcers, precancerous patches, and outright tumors. Because the esophagus sits behind the breastbone and out of sight, many lesions develop silently for months or even years before causing symptoms. The causes are surprisingly varied, spanning acid damage, infections, swallowed chemicals, medications that stick to the lining, immune reactions, and cancer.

What Counts as an Esophageal Lesion

The term covers a broad catalog. Benign epithelial lesions include glycogenic acanthosis (a whitish, plaque-like thickening that is the most common incidental finding on endoscopy), heterotopic gastric mucosa (small islands of stomach-type tissue), squamous papillomas, and hyperplastic polyps. Beneath the surface lining, subepithelial lesions such as leiomyomas (smooth-muscle tumors) and hemangiomas (tangles of blood vessels) can form in the esophageal wall. Most of these are diagnosed by their appearance during endoscopy or by biopsy, while deeper submucosal lesions sometimes require endoscopic resection for a definitive answer.¹ At the opposite end of the spectrum sit malignant lesions, including squamous cell carcinoma and adenocarcinoma, which can start as flat, barely visible changes in the lining before becoming bulky tumors.

Acid Reflux and GERD

Gastroesophageal reflux disease is probably the single most common driver of esophageal injury in adults. When the lower esophageal sphincter relaxes too often or too completely, stomach acid washes up into the esophagus and damages its lining. Over time this produces erosions, ulcers, and inflammation visible on endoscopy. Damage is graded from mild (small, isolated mucosal breaks) to severe (circumferential erosions and deep ulcers). Patients at the more severe end tend to have measurably weaker esophageal contractions and lower sphincter pressures, meaning the muscular function of the esophagus itself deteriorates alongside the visible damage.²

Not every reflux patient has obvious erosions, though. A significant proportion have what clinicians call nonerosive reflux disease, where the esophagus looks normal on standard white-light endoscopy even though the person has classic heartburn symptoms. Newer imaging techniques and tissue biopsies can pick up microscopic inflammation that white light misses, so the absence of visible erosions does not necessarily mean the esophagus is healthy.³

Caustic and Chemical Injury

Swallowing a strongly acidic or alkaline substance, whether accidentally or intentionally, causes some of the most devastating esophageal lesions. The severity depends on the substance’s pH, the amount swallowed, how long it stays in contact with tissue, and whether it is a solid or a liquid. Solid caustic agents tend to stick to the mouth and throat, doing the worst damage there, while liquids pass through quickly and concentrate their injury in the esophagus and stomach.⁴ Alkaline substances like lye typically cause deeper, liquefactive burns that penetrate the full thickness of the esophageal wall, whereas strong acids tend to produce more superficial coagulative injury. Either type can lead to scarring, stricture formation, and a heightened long-term risk of esophageal cancer.

Pill Esophagitis

You might not think of a pill as something that can burn a hole in your esophagus, but certain medications can do exactly that if they lodge against the lining. The classic offenders are tetracycline-class antibiotics and nonsteroidal anti-inflammatory drugs, though case reports have documented the same injury from a surprisingly wide range of medications, including antihistamines and even oral contraceptives.⁵⁶ The pattern is the same: a pill taken with too little water, often right before lying down, gets stuck partway down. The drug dissolves in place and creates a localized chemical burn, typically a clean-based ulcer visible on endoscopy.

Prevention is straightforward. Take pills with a full glass of water and stay upright for at least 30 minutes afterward. If you already have a known narrowing of the esophagus, ask your doctor whether a liquid formulation is available.

Infections That Target the Esophagus

Esophageal infections are uncommon in people with healthy immune systems but show up regularly in those who are immunocompromised, whether from HIV, organ transplant medications, chemotherapy, or other causes. The main culprits are Candida (a fungus that produces white plaques), herpes simplex virus (HSV), and cytomegalovirus (CMV). HSV tends to produce small, punched-out ulcers with yellowish rims, while CMV ulcers are usually larger, deeper, and oriented lengthwise, concentrated in the lower esophagus.⁷ Co-infection with both viruses at the same time is possible and complicates treatment. Biopsy is usually necessary to tell the infections apart, because their endoscopic appearances can overlap.

Eosinophilic Esophagitis

Eosinophilic esophagitis is an immune-driven condition in which white blood cells called eosinophils accumulate in the esophageal lining in response to food or environmental allergens. It has become a much more frequently recognized diagnosis over the past two decades, particularly in younger adults and children with recurrent food impaction or chronic difficulty swallowing. On endoscopy, the esophagus shows a characteristic set of features: concentric rings (sometimes called a “trachealized” esophagus), vertical furrows, white spots or plaques, and a fragile, crepe-paper-like mucosa that can tear during the examination itself.⁸ Because these features can be subtle, the condition is easy to miss if the endoscopist is not specifically looking for it. Diagnosis requires tissue samples showing a high density of eosinophils.

Mechanical and Traumatic Injuries

The esophagus can be injured by physical force. Forceful or prolonged vomiting, violent retching, or straining can tear the mucosa at the junction where the esophagus meets the stomach, a scenario known as a Mallory-Weiss tear. These tears account for a notable share of upper gastrointestinal bleeding episodes. The classic story involves vomiting followed by bloody vomit, but the preceding vomiting episode is not always remembered or reported.⁹ A small hiatal hernia and thinning of the mucosa with age both seem to increase vulnerability. In rare and more dramatic cases, the esophageal wall can rupture completely, a life-threatening emergency.

Thermal Injury From Hot Food and Drinks

Habitually consuming very hot beverages or foods can injure the esophageal lining. The damage is not dramatic on any single occasion, but chronic thermal irritation sets off an inflammatory cycle. The repeated injury and repair stimulates cell turnover and may promote the formation of cancer-promoting compounds within the tissue itself.¹⁰ Animal studies reinforce this concern: repeated exposure to very hot water, especially when combined with known carcinogens, interfered with normal tissue healing and encouraged the development of precancerous changes.¹¹ This is one of those risk factors that rarely makes headlines but is well-established in the epidemiology of esophageal squamous cell carcinoma, particularly in regions where extremely hot tea or soup is customary.

How Symptoms Show Up

Esophageal lesions can produce a range of symptoms depending on their type, size, and location. The most common include:

Dysphagia: difficulty swallowing, which can range from a vague sensation that food is sticking to a complete inability to get solids down.
Odynophagia: pain during swallowing, often described as a sharp or burning sensation behind the breastbone.
Heartburn: a burning feeling in the chest, especially after eating or when lying down, most closely associated with acid reflux.
Chest pain: can mimic heart-related chest pain closely enough that cardiac causes need to be ruled out first.
Bleeding: may present as vomiting blood, dark or tarry stools, or iron-deficiency anemia discovered incidentally.
Food impaction: a piece of food becomes wedged and will not pass, requiring emergency removal. This is a hallmark presentation of eosinophilic esophagitis and tight strictures.

Acute esophageal symptoms such as sudden-onset dysphagia or food bolus impaction are most commonly caused by strictures, Schatzki rings, or eosinophilic esophagitis, while acute chest pain with painful swallowing points toward infections, motility disorders, or perforation.¹² Many benign lesions, particularly small leiomyomas and patches of glycogenic acanthosis, produce no symptoms at all and are discovered only when an endoscopy is performed for another reason.

From Barrett’s Esophagus to Cancer

One of the most clinically important esophageal lesions is Barrett’s esophagus, a condition in which chronic acid reflux causes the normal squamous lining of the lower esophagus to be replaced by a type of tissue that resembles the stomach or intestinal lining. Barrett’s matters because it is a recognized precursor to esophageal adenocarcinoma. The transformation does not happen overnight; it follows a stepwise progression from intestinal-type changes through increasing grades of dysplasia before cancer develops. Molecular studies show that certain gene mutations accumulate progressively along this sequence, becoming more frequent as the tissue moves closer to cancer.¹³

The overall risk of any individual Barrett’s patient developing cancer is modest on a year-to-year basis, but because the consequences are severe, surveillance endoscopy at regular intervals is standard practice. If dysplasia is detected, treatment can be offered before invasive cancer takes hold.

Squamous cell carcinoma, the other major type of esophageal cancer, follows a different pathway. It arises from the normal squamous lining rather than from Barrett’s-type changes and is more strongly linked to smoking, alcohol, and thermal injury. In rare cases, squamous carcinoma can develop in tissue overlying a pre-existing benign lesion like a leiomyoma, which can create confusing imaging appearances.¹⁴

How Esophageal Lesions Are Diagnosed

Upper endoscopy, where a flexible camera is passed through the mouth into the esophagus, is the primary diagnostic tool. Standard white-light endoscopy can identify most visible lesions, and biopsies taken during the procedure provide tissue for microscopic analysis. For subtler lesions, advanced imaging techniques improve detection. Narrow band imaging (NBI), which uses specific wavelengths of light to enhance the contrast of surface blood vessels and mucosal patterns, is increasingly used for screening and surveillance. Compared to older techniques like iodine staining (Lugol chromoendoscopy), NBI causes fewer adverse symptoms and is better tolerated for repeat examinations, making it a practical option for periodic cancer screening in high-risk individuals.¹⁵

Artificial intelligence is beginning to change how endoscopists evaluate what they see. AI systems trained on thousands of endoscopic images can flag areas of early neoplasia in Barrett’s esophagus that a human eye might overlook, and can guide biopsy targeting to the most suspicious spots.¹⁶ These tools are not replacing endoscopists, but they function as a second pair of eyes, particularly valuable in Barrett’s surveillance where subtle morphologic changes can signal early adenocarcinoma that is otherwise easy to miss.¹⁷

Treatment of Benign and Precancerous Lesions

Treatment depends entirely on what the lesion is and what risk it carries. Most incidental benign findings, like glycogenic acanthosis or a small leiomyoma causing no symptoms, need no treatment at all. The main options for lesions that do require intervention include:

Acid suppression: proton pump inhibitors remain the backbone of treatment for reflux-related erosions, ulcers, and Barrett’s esophagus. They reduce acid exposure, allow healing, and in some Barrett’s patients can slow or prevent further tissue changes.
Dilation: strictures (narrowings) from scarring are stretched open using balloons or tapered dilators passed through the endoscope. Simple strictures from peptic injury or Schatzki rings usually respond well, while complex strictures caused by caustic ingestion, radiation, or surgical anastomoses tend to recur and may need repeated sessions.¹⁸ For refractory cases, techniques such as steroid injection into the scar tissue, temporary stent placement, and endoscopic incision therapy expand the options.
Endoscopic resection: for early neoplastic lesions (early-stage cancer or high-grade dysplasia confined to the superficial layers), removing the lesion through the endoscope is often curative. The large tissue specimen obtained also allows pathologists to confirm the depth of invasion and determine whether further treatment is needed.¹⁹
Radiofrequency ablation: after a visible neoplastic lesion in Barrett’s esophagus has been removed, the remaining Barrett’s tissue still carries a risk of new lesions appearing elsewhere. Radiofrequency ablation uses heat delivered by a catheter to destroy the remaining abnormal lining, prompting it to regrow as normal squamous tissue. This combination of focal resection followed by ablation of the remaining Barrett’s segment has become the standard approach for Barrett’s with dysplasia.¹⁹

Managing Esophageal Perforation

A full-thickness tear or perforation of the esophagus is one of the most dangerous gastrointestinal emergencies. It can result from severe vomiting (Boerhaave syndrome), endoscopic procedures, caustic ingestion, or tumor erosion through the wall. Historically, surgical repair was the only option. Over the past two decades, endoscopic stenting has emerged as a less invasive alternative, particularly for patients who are poor surgical candidates.

A meta-analysis of esophageal stenting for perforation found a mortality rate of roughly 7%, which compares favorably with older surgical series.²⁰ Head-to-head data from a large comparative trial showed that stent placement had a technical success rate similar to surgery, with lower procedural complication rates, shorter hospital stays, and lower in-hospital mortality. However, stented patients had a higher rate of long-term complications compared to those who had surgery, so the choice between the two approaches involves weighing short-term safety against longer-term durability.²¹

When to Worry and When to Wait

A common practical question is whether a lesion found on endoscopy needs to be acted on immediately. The answer depends on the diagnosis. Small, obviously benign incidental findings are typically documented and left alone. Lesions that cause symptoms, have atypical features, or carry premalignant potential need a clear follow-up plan. Barrett’s esophagus without dysplasia, for instance, enters a surveillance program with periodic endoscopies rather than immediate treatment. If low-grade dysplasia appears, the interval tightens, and if high-grade dysplasia or early cancer develops, the shift to active treatment with resection and ablation happens promptly.

Symptoms that should prompt evaluation without delay include progressive difficulty swallowing (especially to solids), unintentional weight loss, vomiting blood, and persistent chest pain not explained by a cardiac workup. Food impaction that does not resolve on its own is an emergency. On the other hand, occasional mild heartburn in an otherwise healthy person usually does not signal a dangerous lesion, though persistent reflux symptoms lasting more than a few weeks warrant a conversation with a doctor about whether endoscopy is appropriate.

Living With Esophageal Strictures

Strictures deserve their own mention because they are a common long-term consequence of many different esophageal injuries. Whether the original cause was acid reflux, caustic ingestion, radiation therapy, or a surgical connection, the scar tissue behaves in similar ways: it contracts, narrows the channel, and makes swallowing progressively harder. Simple strictures from peptic injury or sclerotherapy usually respond to one or two dilation sessions with low recurrence rates. Complex strictures from caustic burns, radiation, or surgical sites behave differently, often requiring repeated dilations and sometimes additional interventions like steroid injections or temporary stent placement to maintain an adequate opening.¹⁸

A stricture is considered refractory if it cannot be dilated to a functional diameter after multiple attempts, and recurrent if a satisfactory diameter cannot be maintained once achieved. For people dealing with refractory strictures, the management becomes a long-term relationship with their gastroenterologist, involving scheduled dilations, dietary adjustments to avoid impactions, and sometimes learning to perform self-dilation at home. The psychological burden of chronic swallowing difficulty is real, and it is worth raising with your care team if it starts affecting your eating habits or quality of life.

1
PubMed Central. Benign esophageal lesions: endoscopic and pathologic features
2
PubMed Central. Relationship between esophageal motility and severity of gastroesophageal reflux disease according to the Los Angeles classification
3
PubMed Central. Correlation of Narrow Band Imaging Endoscopy and Histopathology in the Diagnosis of Nonerosive Reflux Disease
4
PubMed Central. Management of esophageal caustic injury
5
PubMed Central. Desloratadine Induced Pill Esophagitis
6
PubMed Central. Oral contraceptive pill-induced esophagitis: a rare cause of pill esophagitis in a Rwandan woman
7
PubMed Central. Esophageal Cytomegalovirus and Herpes Simplex virus co-infection in an immunocompromised patient: Case report and review of literature
8
Clinical Endoscopy. Esophageal Lesions: A High Index of Suspicion is Important for Diagnosis
9
PubMed Central. Mucosal tears at the oesophagogastric junction (the Mallory-Weiss syndrome)
10
PubMed Central. High-temperature beverages and Foods and Esophageal Cancer Risk — A Systematic Review
11
PubMed. Recurrent acute thermal lesion induces esophageal hyperproliferative premalignant lesions in mice esophagus
12
PubMed Central. Acute oesophageal symptoms
13
PubMed. p16 gene mutations in Barrett’s esophagus in gastric metaplasia – intestinal metaplasia – dysplasia – adenocarcinoma sequence
14
Journal of Pathology and Translational Medicine. Esophageal Squamous Cell Carcinoma In Situ Overlying Leiomyoma Mimicking Invasive Cancer: A Brief Case Report
15
PubMed Central. Tolerability of magnifying narrow band imaging endoscopy for esophageal cancer screening
16
PubMed Central. The role of artificial intelligence in the endoscopic diagnosis of esophageal cancer: a systematic review and meta-analysis
17
Gastroenterology. Artificial Intelligence in Esophageal and Gastric Neoplasia: A Comprehensive Review
18
PubMed Central. Intralesional steroid injection therapy in the management of resistant gastrointestinal strictures
19
PubMed Central. Endoscopic Resection and Radiofrequency Ablation for Early Esophageal Neoplasia
20
PubMed Central. Efficacy and safety of esophageal stenting for esophageal perforation: a systematic review and meta-analysis
21
American Journal of Gastroenterology. Endoscopic Therapy Compared to Surgical Repair for the Treatment of Acute Esophageal Perforations: The ISSUE Trial