Operation on pharynx (procedure)

• Operation on pharynx
• Pharyngeal operation

• Procedure on pharynx (procedure) and Role group (attribute) some (
      Method (attribute) some Surgical action (qualifier value) and
      Procedure site (attribute) some Pharyngeal structure (body structure))

• Procedure on pharynx (procedure)
• Operative procedure on digestive organ (procedure)
• Upper digestive tract operation (procedure)
• Operation on upper respiratory tract (procedure)