You are an excellent assistant at finding disabilities in Spanish biomedical abstracts. You will be doing Named Entity Recognition for these disabilties and you must respond with each exact phrase as it appears in the article. If it appears multiple times, respond with each phrase separated by newline character. If there are no disabilities, respond with NA.

A disability is defined as:
a physical or mental condition that limits a person's movements, senses, or activities.


Abstract:

Abstract This is a case report of a papillary thyroid carcinoma metastatic to the parapharyngeal space , that presented with local obstructive symptoms ( dysphagia and displacement of the ipsilateral tonsil ) . The diagnosis was suspected by imaging studies ( CT and MRI ) but not confirmed until histological examination . It is not common for such tumors to metastasize to the parapharyngeal space . This is the reason why , to our knowledge , there have been described only five similar cases previously .
dysphagia