Superficial<unk> s can often be diagnosed by appearance and consistency alone. Sometimes, it is indicated to perform diagnostic imaging and/or needle biopsy. On a CT scan, a<unk>  is fairly homogenous, with an attenuation of about 10-18 Hounsfield units.
Mucocele
Otic polyp
Keratocyst
Pouchitis
Oral mucocele
Chalazion
Vaginitis emphysematosa
Punctal plug