eRadiograph Volume 7: Imaging of Oral Cavity | Page 223

Parotid space pathologies:
Non neoplastic:
Development anomalies – Aplasia, atresia, agenesis
Sialadenitis –

Bacterial, viral, TB, Sarcoid and Radiotherapy

Sialolithiasis

Cystic –

Developmental
(LEC) Lymphoepithelial cyst
(BCC) Branchial cleft cyst
Polycystic
Acquired

Sialosis –

Hyperlipedemia

Neoplastic –

Epithelial (90 %)

Benign –

Pleomorphic adenoma
Warthins tumor
Benign oncocytic tumors

Malignant –

Pleomorphic adenocarcinoma
Mucoepidermoid CA
Adenoid cystic CA
Acinic Cell CA
Malignant oncocytic tumors

Non epithelial- Benign
Haemangioma
Lipoma
Neurogenic tumors
Malignant
Lyphoma
Metastases
Cystic lesions of the parotid gland
Primary cystic lesions account for 2 – 5% of all parotid lesions. These can be classified
into lymphoepithelial cyst, branchial cleft cyst, epidermoid inclusion cyst, polycystic
dysgenetic disease, cystic hygroma, congenital sialectasis or acquired cysts such as
ductal sialocyst, acquired HIV related parotid cysts.
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Parotid Space

Autoimmune – Sjogren`s syndrome