Achalasia differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Due to the similarity of symptoms, achalasia can be misdiagnosed as other disorders, such as gastroesophageal reflux disease (GERD), hiatus hernia, and even psychosomatic disorders.

Differentiating Achlasia from other Disease

Achalasia must be differentiated from other causes of dysphagia, odynophagia and food regurgitation such as GERD, esophageal adenocarcinoma and esophageal stricture.

	Manifestations	Diagnostic tools
Achalasia	Dyspnea Dysphagia for solids and liquids is the most common feature, being seen in 91 % and 85% of patients respectively Regurgitation of undigested food occurs in 76-91% of patients Cough mainly when lying down in 30%	Esophagogastroduodenoscopy findings include a dilated esophagus with residual food fragments, normal mucosa and occasionally candidiasis (due to the prolonged stasis). Barium swallow shows the characteristic bird's beak appearance. Barium swallow showing bird's beak appearance - By Farnoosh Farrokhi, Michael F. Vaezi. - Idiopathic (primary) achalasia. Orphanet Journal of Rare Diseases 2007, 2:38(http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2040141), CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=2950922
GERD	Retrosternal burning chest pain. Cough and hoarseness of voice. May present with complications such as strictures and dysphagia.	Upper GI endoscopy shows the complications such as esophagitis and barret esophagus. Esophageal manometry may show decreased tone of the lower esophageal sphincter. 24-hour esophageal pH monitoring may be done to confirm the diagnosis. Barret's esophagus - By Samir धर्म - taken from patient with permission to place in public domain, Copyrighted free use, https://commons.wikimedia.org/w/index.php?curid=1595945
Esophageal carcinoma	Dysphagia Odynophagia- fluids and soft foods are usually tolerated, while hard or bulky substances (such as bread or meat) cause much more difficulty Weight loss Pain, often of a burning nature, may be severe and worsened by swallowing, and can be spasmodic in character Nausea and vomiting	Upper GI endoscopy and esophageal biopsy the gold standard for the diagnosis of esophageal CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2587715
Corckscrew esophagus	Retrosternal chest pain that presents with or without food intake. The condition is not progressive and not causing complications.	Barium swallow shows the characteristic corckscrew appearance of the esophagus. Corckscrew esophagus - Case courtesy of Radswiki, Radiopaedia.org, rID: 11680
Esophageal stricture	Patient may present with the symptoms of the underlying GERD. Dysphagia and odynophagia.	Barium esophagography provides information about the site and the diameter of the stricture before the endoscopic intervention. Peptic stricture - By Samir धर्म - From en.wikipedia.org, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1931423