Oral Pathology: Malignant Salivary Gland Diseases

Introduction

• Presenter: Ryan
• Topic: Malignant diseases of salivary gland origin
• Focus: Classification by microscopic appearance
• Common Location: Most common on the palate

Comparison with Benign Tumors

• Previously discussed benign tumors:
  • Pleomorphic adenoma: Most common on the palate and parotid gland
  • Warthin's tumor: Most common on the parotid gland
• Malignant tumors differ as they are most common on the palate

Malignant Salivary Gland Diseases

Mucous Epidermoid Carcinoma

• Most Common salivary gland malignancy
• Composition: Mucous and epithelial cells
• Location: Commonly found on the palate
• Key Point: Remember as the most common salivary malignancy

Polymorphous Low-Grade Adenocarcinoma (PLGA)

• Second Most Common salivary gland malignancy for minor glands
• Meaning: "Adeno" refers to gland
• Location: Also commonly found on the palate
• Key Point: Known as the second most common salivary gland malignancy

Adenoid Cystic Carcinoma

• Characteristic Feature: Cribriform or "Swiss cheese" microscopic pattern
  • Appearance: Empty spaces or holes observed under a microscope
• Effect on Other Tissues: Can also affect breast tissue with a similar microscopic appearance
• Survival Rates:
  • 5-year survival rate: 70%
  • 15-year survival rate: 10%
• Key Point: Important for board exams due to its distinctive pattern and prognosis

Conclusion

• Summary: Overview of malignant salivary gland diseases focusing on the most common types and their characteristics
• Call to Action: Like and subscribe for more oral pathology content
• Thank You: Gratitude for viewers' participation