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16 Cards in this Set
- Front
- Back
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What is the most common malignancy of the lip?
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Squamous cell carcinoma
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What percentage of lip cancers are basal cell carcinoma?
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~1%
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T/F: Women are at higher risk for lip cancer because of the amount of exposure they get from tanning
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FALSE. Men are at much higher risk
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Embryologically, how is the upper lip formed?
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The 2 maxillary processes fuse with a central median nasal process.
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What structure of the lip helps to define and clarify the borders of a lip cancer?
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The vermillion border
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If a lip cancer is going to metastasize, which lip does it more commonly originate from?
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The upper lip
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Where does the lymph of the upper lip drain into?
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Into the submandibular node
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What size ranges do you generally keep in mind when grading tumors by size?
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Remember 2 and 4cm as benchmarks:
T0: No evidence of tumor T1: <2cm T2: Between 2 and 4 cm T3: >4cm T4: >4cm and invasion |
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How wide should your margins be when excising lip cancer?
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Depends on the size
Small? 5mm of normal tissue Medium: 8-10mm Large: 15-20mm |
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What are the most commonly selected configurations of lip excisions?
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V, W, or shield
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How many layer do you need to suture to close a lip excision?
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At least 3: Skin, mucosa, muscle
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How much of the lower lip can be excised and yet still achieve primary closure?
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Up to 1/3rd
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What is a popular technique used for defects of the lower lip >1/3rd?
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The Karapandzic flap
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What are Abbe-Estlander type flaps?
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A type of cross-lip flap technique transferring tissue from one lip to another
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What type of flap may be used to repair a defect caused by excising the entire lower lip?
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The Bernard flap
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Which area of the lip generally presents with a far worse prognosis?
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Cancer in the commissures of the lips
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