Accessory parotid gland tumor: a case report

Area of Science:

• Head and Neck Surgery
• Surgical Oncology
• Otolaryngology

Background:

• Pleomorphic adenomas are the most common salivary gland tumors.
• Accessory parotid gland tumors are rare and can mimic other conditions.
• Accurate pre-operative diagnosis is essential for optimal surgical outcomes.

Observation:

• A case of pleomorphic adenoma originating from the accessory parotid gland is presented.
• Computed tomography (CT)-sialography and fine-needle aspiration biopsy were used for pre-operative assessment.
• The tumor's relationship to the facial nerve branches and parotid duct was identified.

Findings:

• Histological analysis confirmed pleomorphic adenoma of salivary origin.
• The accessory parotid gland tissue associated with the tumor showed distinct histological differences from normal parotid tissue.
• Differences in cell composition may influence tumor development.

Implications:

• Pre-operative assessment is vital to prevent facial nerve injury and salivary fistula.
• Understanding the unique histology of accessory parotid glands may offer insights into tumorigenesis.
• This case underscores the importance of detailed pre-operative evaluation for rare salivary gland neoplasms.