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Surgery

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Salivary Gland

Question
40 out of 80
 

All of the following statements about lymphoepithelioma of the parotid gland are true, except:



A Parotid gland is the most common site of lymphoepithelioma in the head and neck region

B It is associated with EBV infection

C It is highly radiosensitive

D It is a type of squamous cell carcinoma

Ans. A Parotid gland is the most common site of Lymphoepethelioma in the Head and Neck region (Ref: Devita 9/e p729, 752, 774)

• The most common site of lymphoepithelioma is the nasopharynx. Lymphoepithelioma occurs rarely in the parotid and submandibular glands.

Lvmphoepethelioma

• Lymphoepithelioma: Undifferentiated carcinoma of the nasopharyngeal type

• Lymphoepithelioma is a variant of squamous cell carcinoma that arises in lymphoid bearing areas

• Found most commonly in the nasopharynx

• Rarely occur in parotid and submandibular glands

Common sites of Lymphoepithelioma in Head and Neck

• Nasopharynx (MC site)

• Faucial tonsils

• Lingual tonsils (base of tongue)

• Histologically the squamous component is highly undifferentiated while the lymphoid component is essentially benign (non- neoplastic lymphocytes)

• EBV is commonly linked when this tumor is located in the nasopharynx

• High tendency to metastasize and is exquisitely radiosensitive

Important characteristic features

• High tendency to metastasize

• Extreme radiosensitivity

Salivary Gland Flashcard List

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