Carcinoma of lip is characterized by the following except that -

Ans. is 'd' i.e., Since lymph noded metastases are common after a radical dissection of neck is mandatory Lymph node metastases in lip cancer is not common. Seen in less than 10% cases. Most common site of lip cancer is lower lip (88 to 98%) > upper lip (2 to 7%) > oral commissure (1%). Most common cancer is squamous cell carcinoma. Most common cancer for upper lip is Basal cell carcinoma (Ref: Sabiston I8/e p819)