Warthin Tumour Diagnosis and Management

Clinical Presentation and Diagnosis

The British Journal of Cancer recommends high-resolution ultrasound as the standard imaging modality for Warthin tumour diagnosis, which must be performed by trained personnel 1
The Journal of Clinical Oncology suggests that core needle biopsy (CNB) has higher sensitivity (94%) and specificity (98%) with lower inadequacy rates (1.2% vs 8% for FNAB) for tissue diagnosis 3
The American College of Surgeons recommends risk stratification using the Milan System, which should be applied to cytology specimens, and Warthin tumour typically falls into Category IV (Benign Neoplasm) with very low malignancy risk 4

The British Journal of Cancer states that enucleation or limited resection is the treatment of choice for Warthin tumour, and no adjuvant radiotherapy is indicated for completely excised Warthin tumour 1, 5
The Journal of Clinical Oncology recommends intraoperative frozen section to confirm benign diagnosis and guide extent of resection 3, 6
The National Comprehensive Cancer Network suggests that complete gland excision is required for major gland tumours, and routine postoperative radiotherapy is necessary for stage II-IV high-grade or incomplete resection 7, 1, 5

The British Journal of Cancer notes that facial nerve paralysis, trismus, and cutaneous infiltration are clinical red flags for malignancy that are absent in Warthin tumour 1, 2
The Journal of Clinical Oncology warns that false-negative FNAB rates can be up to 20%, and correlation with clinical and imaging findings is necessary 6, 4