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The failure of a ring of muscle fibers, such as a sphincter of the esophagus, to relax.

[New Latin : a- + Greek khalasis, relaxation (from khalān, to loosen).]


(Medicine) pathol failure of the cardiac sphincter of the oesophagus to relax, resulting in difficulty in swallowing
[New Latin, from a-1 + Greek chalasis relaxation]


(ˌæk əˈleɪ ʒə, -ʒi ə, -zi ə)

inability of a circular muscle, esp. of the esophagus or rectum, to relax, resulting in widening of the structure above the muscular constriction.
[1910–15; a-6 + Greek chálas(is) (chala-, s. of chalân to loosen + -sis -sis) + -ia]


n. acalasia, falta de capacidad de relajación esp. de una abertura o esfínter.


n acalasia
References in periodicals archive ?
Objective: Achalasia Cardia is treated by Pneumatic balloon dilatation, Heller's Myotomy and recently, by Peroral Esophagaeal Myotomy.
Our study attempts to understand the various aetiopathogenesis and epidemiological features of this problem and their clinical presentation; so that, early detection maybe planned and various treatment modalities for achalasia cardia, peptic stricture, corrosive stricture and their results are evaluated.
Objective: The study was carried out to ascertain the outcome of laparoscopic modified Heller's myotomy for achalasia cardia and to determine the morbidity associated with it.
We present the case of a patient with achalasia cardia who developed retrograde gastroesophageal intussusception (GEI) after Heller myotomy.
Endoscopic Assessment of effacement of balloon waist during pneumatic dilatation of primary achalasia cardia under topical anesthesia.
Achalasia cardia pneumatic dilatation balloon with 10 cm long balloon, dilatation diameter 25mm, with radio opaque markers (One per pack)
Randomized controlled trial of intrasphincteric botulinum toxin A injection versus balloon dilatation in treatment of achalasia cardia.
Achalasia cardia is a neuromuscular disorder of unknown aetiology, rarely described in children and adolescents: The symptoms include dysphagia, vomiting/ regurgitation of food, retrosternal pain, poor growth and respiratory symptoms due to chronic aspiration.
Achalasia cardia and gastric outlet stenosis in a postmenopausal woman: case report.
The etiology for dysphagia included carcinoma esophagus (11), carcinoma larynx (10), carcinoma hypopharynx (08), cerebrovascular accident (05), esophageal candidiasis (03), stricture (02), oral malignancy (02); TB of upper aerodigestive tract (02), esophageal web (02), drug induced esophageal ulcer (01), extrinsic compression (01), scleroderma (01), achalasia cardia (01) and myasthenia gravis (01).
Objectives: To evaluate relief of dysphagia and appearance of reflux symptoms in patients of achalasia cardia treated with Tran's abdominal cardiomyotomy and anterior Dor patch.