Uncommon cause of dysphagia: paraneoplastic achalasia.

Achalasia secondary to underlying neoplasm is a rare entity. Early recognition of secondary achalasia is important as its treatment involves management of underlying malignancy, while treatment of primary achalasia mainly involves lowering the lower oesophageal sphincter pressure with pneumatic dilatation or Heller's myotomy. We discuss an interesting case of achalasia secondary to non-Hodgkin's lymphoma. © BMJ Publishing Group Ltd (unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.