"The WHO classification divides it into 3 distinct histological subtypes1-4:"
"They can rarely occur outside the nasal cavity and paranasal sinuses, including in the oral cavity, nasopharynx, oropharynx, hypopharynx, middle ears, mastoid and lacrimal sac7."
"They can rarely occur outside the nasal cavity and paranasal sinuses, including in the oral cavity, nasopharynx, oropharynx, hypopharynx, middle ears, mastoid and lacrimal sac7."
"They can rarely occur outside the nasal cavity and paranasal sinuses, including in the oral cavity, nasopharynx, oropharynx, hypopharynx, middle ears, mastoid and lacrimal sac7."