A 63-year-old man presents to the clinic with progressive dysphagia and a 20-pound unintentional weight loss over the past 4 months. He initially had difficulty swallowing solid foods but now has difficulty swallowing liquids. His medical history is significant for obesity and chronic gastroesophageal reflux disease. He takes omeprazole daily. Vital signs are within normal limits, and physical examination is unremarkable. Upper endoscopy reveals a distal esophageal mass, and biopsy confirms adenocarcinoma.
Which of the following conditions most likely preceded the development of this malignancy?
The correct answer is:
A) Barrett esophagus
This patient has esophageal adenocarcinoma, which most commonly develops in the distal esophagus in patients with chronic gastroesophageal reflux disease. Persistent acid exposure can lead to Barrett esophagus, in which normal squamous epithelium is replaced by intestinal-type columnar epithelium. Barrett esophagus is the major precursor lesion for esophageal adenocarcinoma and significantly increases cancer risk.
Answer choice B: Caustic alkali injury, is incorrect. Caustic injury can cause chronic inflammation and increase the risk of esophageal malignancy. However, it is more strongly associated with esophageal squamous cell carcinoma rather than adenocarcinoma. This answer would be more appropriate in a patient with a history of caustic ingestion who later develops a proximal or mid-esophageal cancer.
Answer choice C: Esophageal webs, is incorrect. Esophageal webs are associated with Plummer-Vinson syndrome and can cause dysphagia. However, they are linked to squamous cell carcinoma of the upper esophagus rather than adenocarcinoma of the distal esophagus. This answer choice would be more appropriate in a patient with iron deficiency anemia and upper esophageal dysphagia.
Answer choice D: Longstanding achalasia, is incorrect. Achalasia is a recognized risk factor for esophageal cancer because of chronic food stasis and inflammation. However, the malignancy associated with achalasia is typically squamous cell carcinoma. This answer would be more likely in a patient with years of untreated achalasia who develops a mid-esophageal tumor.
Answer choice E: Plummer-Vinson syndrome, is incorrect. Plummer-Vinson syndrome consists of iron deficiency anemia, dysphagia, and esophageal webs. Like esophageal webs themselves, it is associated with squamous cell carcinoma rather than adenocarcinoma. It would be a more appropriate answer in a patient with microcytic anemia and upper esophageal pathology.
Key Learning Point
Barrett esophagus is the primary precursor lesion for esophageal adenocarcinoma and develops as a complication of chronic gastroesophageal reflux disease.
