Esophageal Mass
An esophageal mass is an abnormal growth or lesion in the esophagus, the muscular tube that carries food and liquid from the throat to the stomach. Esophageal masses can be benign or malignant and may arise from the lining of the esophagus, the muscular wall, or surrounding tissues. Some are discovered because of symptoms such as difficulty swallowing or chest discomfort, while others are detected incidentally on imaging done for other reasons. Endoscopy is the primary tool for direct visualization and biopsy, while CT, MRI, and PET/CT help characterize the lesion and assess its relationship to nearby structures.
What is it?
The esophagus is a muscular tube about 25 centimeters (10 inches) long that connects the throat (pharynx) to the stomach. It carries food and liquid from the mouth to the stomach through coordinated muscular contractions. The esophagus passes through the chest, behind the heart and great vessels, and through an opening in the diaphragm into the upper abdomen. An esophageal mass is any abnormal growth or lesion involving this tube, and because of its central location in the chest, masses here often show up on imaging of the chest, mediastinum, or upper abdomen.
Esophageal masses can be either benign or malignant and can arise from different layers of the esophageal wall or from surrounding tissues. Benign causes include leiomyomas (smooth muscle tumors, the most common benign esophageal tumor), gastrointestinal stromal tumors (GISTs), fibrovascular polyps, lipomas, cysts (such as duplication cysts), and small papillomas. Inflammatory and infectious conditions—such as severe esophagitis, abscesses, or rare granulomatous diseases—can sometimes produce focal thickening that mimics a mass. Vascular structures, hiatal hernias, and external compression from adjacent enlarged lymph nodes or a mediastinal mass can occasionally appear similar on imaging.
Malignant esophageal masses are most commonly esophageal cancers, including adenocarcinoma (often arising in the lower esophagus from Barrett’s esophagus and chronic acid reflux) and squamous cell carcinoma (associated with smoking, heavy alcohol use, and certain dietary and environmental factors). Less common malignant lesions include small cell carcinoma, lymphoma, melanoma, and metastatic disease from cancers elsewhere in the body. Risk factors for esophageal cancer vary by cancer type and may include chronic reflux disease, Barrett’s esophagus, smoking, heavy alcohol use, obesity, certain dietary patterns, and a family history of upper gastrointestinal cancers.
Symptoms depend on the size, location, and type of the mass. Many small or early lesions cause no symptoms at all. As a mass grows, the most common symptom is progressive difficulty swallowing (dysphagia), typically beginning with solid foods and later affecting softer foods and liquids. Other possible symptoms include painful swallowing (odynophagia), a sensation of food sticking in the chest, chest or upper abdominal discomfort, persistent reflux or heartburn, regurgitation, hoarseness, chronic cough, unintended weight loss, fatigue, or vomiting blood. Bleeding from an esophageal mass may also cause black, tarry stools or anemia detected on blood tests.
Upper endoscopy is the primary tool for evaluating an esophageal mass because it allows direct visualization of the lesion and biopsy for tissue diagnosis. Barium swallow studies can show the location, length, and shape of a mass and identify functional issues such as obstruction. CT of the chest and upper abdomen provides important information about the size of the mass, its relationship to nearby structures, and the presence of enlarged lymph nodes or distant disease. Endoscopic ultrasound (EUS) is particularly valuable for assessing how deeply a tumor invades the wall of the esophagus and for evaluating nearby lymph nodes; it can also be used to guide fine-needle biopsy of suspicious nodes. PET/CT helps assess metabolic activity and look for spread when malignancy is confirmed or strongly suspected. MRI may be used in selected cases.
Important to Know
Evaluation and treatment of an esophageal mass are highly individualized and depend on the specific diagnosis, the size and location of the lesion, the stage of any cancer, and the patient’s overall health. Care is typically coordinated by a multidisciplinary team that may include gastroenterologists, thoracic surgeons, oncologists, radiation oncologists, radiologists, pathologists, and dietitians.
Benign lesions such as small leiomyomas or stable polyps may be observed when they are not causing symptoms, or removed endoscopically or surgically when symptomatic, growing, or causing concern. Inflammatory or infectious causes are treated based on the specific underlying condition.
Esophageal cancer is treated based on the cancer type, stage, location, and patient health. Treatment may include endoscopic resection for very early-stage tumors, surgery for localized disease, and combinations of chemotherapy, radiation, immunotherapy, and targeted therapy for more advanced disease. Supportive treatments—such as nutritional support, swallowing therapy, stent placement to relieve obstruction, and pain management—are often important parts of care.
Because symptoms such as difficulty swallowing, persistent reflux, and unintended weight loss can be early signs of an esophageal mass—including esophageal cancer—prompt evaluation is important, particularly in patients with risk factors. Early diagnosis significantly improves outcomes for many esophageal conditions.
Red flag symptoms include rapidly progressive difficulty swallowing, severe chest pain, vomiting blood, black or tarry stools, significant unintended weight loss, persistent vomiting, severe shortness of breath, or new hoarseness or cough. These warrant prompt or urgent medical evaluation.