Cervical node metastases presenting with features of branchial cysts

Area of Science:

• Oncology
• Head and Neck Surgery
• Pathology

Background:

• Neck masses, including seemingly benign cysts, can conceal malignancy.
• The exact incidence of carcinoma within neck cysts remains unclear.
• Branchial cleft cysts are a common type of neck cyst, typically benign.

Purpose of the Study:

• To determine the incidence of squamous cell carcinoma within neck cysts.
• To analyze the clinical presentation, primary tumor site, and outcomes of patients with cystic squamous cell carcinoma.
• To evaluate the diagnostic yield of investigating neck cysts for malignancy.

Main Methods:

• Retrospective review of 3400+ head and neck squamous cell carcinoma cases over 30 years.
• Histological examination of cystic lesions presenting as neck masses.
• Analysis of clinical data, including patient age, primary tumor site, treatment, and patient outcomes.

Main Results:

• Nine out of 270 patients with neck masses had squamous cell carcinoma within a cystic lesion.
• Six of these cystic lesions were initially diagnosed as branchial cysts, with the youngest patient aged 39.
• 16% of investigated branchial cysts contained squamous cell carcinoma metastases; primary sites included tonsil, base of tongue, or were occult.
• One-third of patients with cystic squamous cell carcinoma died from their disease within the follow-up period.

Conclusions:

• Seemingly benign neck cysts, particularly branchial cysts in patients over 40, may represent metastatic squamous cell carcinoma.
• Mandatory panendoscopy and ipsilateral tonsillectomy are recommended prior to excision of branchial cysts in patients over 40.
• Early detection and appropriate management are crucial for improving outcomes in patients with cystic squamous cell carcinoma.