A known HIV infected patient presents with a non-tender parotid gland swelling. The most likely diagnosis is:
B-cell non-Hodgkin's lymphoma
Lymphoepithelial cysts
Sialectasia
Parotid abscess
Benign lymphoepithelial cysts may develop in the parotid glands on one or both sides. They arise from intraparotid lymph nodes. Diagnosis is confirmed on CT scan and fine-needle aspiration cytology.
Oral Cavity