Pleomorphic Adenoma of the Right Parotid Gland

Case Presentation:
A 51-year-old female presented with a right parotid swelling of 1-year duration. The swelling was asymptomatic with no associated pain, discharge, or functional impairment.

Past Medical History (PMH): Negative
Past Surgical History (PSH): Negative
Medication History: Negative

Investigations:
None

Ultrasound (US):

• No significant cervical lymphadenopathy.

• Normal parotid and submandibular glands, with no focal lesions.

• A small, complex nodule measuring 16 x 14 x 11 mm was identified in the superficial lobe of the right parotid gland. The nodule had increased in size compared to a previous ultrasound, raising suspicion for a neoplasm.

Fine Needle Aspiration Cytology (FNAC):

• Diagnosis: Neoplasm, benign (Milan System Category IVA).

• Cytological Suggestion: Pleomorphic adenoma (benign mixed salivary gland tumor).

Surgery:
The patient underwent a superficial parotidectomy of the right parotid gland.

Histopathological Examination (HPE):

• Final Diagnosis: Pleomorphic Adenoma

  • Composed of a mixture of epithelial and stromal elements.

  • The tumor was well-encapsulated with no evidence of malignant transformation.

  • Margins were clear of the lesion.

Postoperative Course:

• The patient recovered well with no complications, such as facial nerve injury or hematoma.

• Follow-up ultrasound and clinical examination showed no recurrence or residual disease.

Discussion:
Pleomorphic adenoma, also known as benign mixed tumor, is the most common benign salivary gland neoplasm, with a predilection for the parotid gland. Although generally benign, pleomorphic adenomas have the potential for malignant transformation into carcinoma ex pleomorphic adenoma, especially if left untreated for long periods.

Address

Majid Bag Main Street, Beside University of Sulaymaniyah Old Campus, Madam Mitterrand, Sulaymaniyah, Iraq

Contacts

info@ssthyroid.com