Violation
Squamous cell carcinomas of the lip occur most frequently on the
lower lip near the midline.
commissures.
inner surface of upper lip.
inner surface of lower lip.
upper lip near the midline.
Squamous cell carcinomas of the lip occur most frequently on the
lower lip near the midline.
commissures.
inner surface of upper lip.
inner surface of lower lip.
upper lip near the midline.