Primary And Secondary Tumors Of The Parotid Gland

Primary And Secondary Tumors Of The Parotid Gland

Classify tumors of parotid gland. Discuss clinical features and management of malignant parotid tumors.

Answer.Classification of tumors of parotid gland

International Classification of Parotid Tumors

Parotid Gland Epithelial

Adenomas

Pleomorphic adenoma

Monomorphic adenoma

• Adenolymphoma
• Oxiphilic
• Other type

• Mucoepidermoid—low grade malignancy
• Acinic cell tumor
• Carcinoma

“Symptoms Of Parotid Gland Tumors”

• Adenoid cystic carcinoma
• Adenocarcinoma
• Epidermoid carcinoma
• Undifferentiated carcinoma
• Carcinoma Ex pleomorphic adenoma

“The Role Of Imaging In Detecting Parotid Gland Tumors”

Parotid Gland Non-Epithelial

• Hemangioma
• Lymphangioma
• Neurofiroma

Parotid Gland Metastatic

• Epidermoid carcinoma
• Malignant melanoma

Parotid Gland Malignant Parotid tumor

It is also known as carcinoma ex pleomorphic adenoma

Clinical Features of Malignant Parotid tumor

• It occurs from 2nd to 9th decade of life.But is common between 5th to 6th decades.
• Pain is very commonly present.
• Size of the tumor is very large and tumor can be associated with ulceration.
• These tumors can also lead to facial nerve palsy.
• Tumor gets fied to underlying structures as well as to overlying mucosa or skin.

“Comprehensive Overview Of Parotid Gland Tumor Symptoms”

Management of Malignant Parotid tumor

Radical Parotidectomy

• It is the removal of both the lobes of parotid, facial nerve,parotid duct, fier of masseter, buccinators, pterygoids and radical block dissection of the neck.
• If there is no involvement of the facial nerve, it should be preserved. But, if facial nerve is removed it should be reconstructed by the greater auricular nerve or sural nerve
• Advanced tumor with the fied nodes in neck may require radiotherapy but the response rate is poor.

Postoperative Radiotherapy

• This is useful to reduce the chances of relapse.
• Mainly external radiotherapy should be given.

“Causes Of Secondary Tumors In The Parotid Gland”

Chemotherapy

• It is also given.
• Drugs given here depend on the tumor type.
• Intra arterial chemotherapy is benefiial
• Overall efficy of chemotherapy is less as compared to radiotherapy.
• 5FU, Cisplatin, Doxorubicin, epirubicin, cetuximab are used.