Which of these pathologies is the most common benign tumour of the parotid gland?
Mumps
TB
Heerfordt syndrome
Pleomorphic adenoma
Mumps causes the classic bilateral parotitis, but it can present as a unilateral enlargement in rare cases. Heerfordt syndrome includes sarcoidosis.
Tuberculosis historically was associated with ‘cold abscess’. It is caused by Mycobacterium tuberculosis, an acid-fast bacterium that does not stain with Gram stain. It requires Ziehl–Neelsen staining.