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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In carcinoma of lower lip secondaries are seen in -
assistant
The correct answer is  Submental and submandibular nodes are involved first in carcinoma of lips.
Submental and submandibular are included in upper cervical LN or level 1 lymph nodes.