Bilateral tonsillar adenoid cystic carcinoma

Area of Science:

• Oncology
• Pathology
• Head and Neck Surgery

Background:

• Adenoid cystic carcinoma (ACC) is a malignant epithelial neoplasm originating from salivary glands.
• It represents a small fraction of head and neck cancers (<1%) and salivary gland tumors (<10%).
• ACC is characterized by indolent growth, perineural invasion, and a propensity for late recurrence and distant metastasis.

Observation:

• This report presents a case of ACC occurring in the oral cavity.
• The tumor was specifically located in the left palatine tonsil and right peritonsillar tissues.
• This site is among the most common locations for ACC, following the oropharynx.

Findings:

• The case illustrates the typical clinical behavior of ACC, including its slow growth pattern.
• The high incidence of distant metastases and potential for delayed recurrences are key features of this malignancy.
• Perineural invasion is a hallmark of ACC, contributing to its challenging clinical management.

Implications:

• Accurate diagnosis and understanding of ACC's behavior are crucial for effective patient management.
• The propensity for recurrence and metastasis necessitates long-term surveillance in affected individuals.
• Further research into the molecular mechanisms of ACC may lead to improved therapeutic strategies.