Illustration showing achalasia of the oesophagus. Achalasia is a failure of smooth muscle fibres to relax, which can cause the lower oesophageal sphincter to remain closed (lower centre). This can happen at various points along the gastrointestinal tract. Oesophageal achalasia can cause difficulty in swallowing, regurgitation and sometimes chest pain. It often has no underlying cause. Treatment with drugs often causes relief. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / MICHAEL HOFFMANN / MEDICAL GRAPHICS |
Taille de l’image : | 2745 px × 3883 px |
Model Release : | Non requis |
Property Release : | Non requis |
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