Mucoepidermoid carcinoma

General:

Gross:

Microscopic: Four cell types: mucin producing, squamous, intermediate, and clear.

• Grading:
  • AFIP: 0-4 Low Grade; 5-6 Intermediate Grade; 7 or more High Grade.
    • Intracystic component > 20%: 2 points
    • Neural invasion: 2 points
    • Necrosis: 3 points
    • Four or more mitoses per 10 HPF: 3 points
    • Anaplasia: 4 points

Differential Diagnosis:

Stains:

• Positive:
• Negative:
• Suggested, focused panel:

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Images:


Cases:

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