No abstract

No abstract

The origin of cystadenolymphoma (Warthin's tumour) of the parotid gland is unknown. According to the most favoured hypothesis, Warthin's tumour results from the proliferation of salivary gland ductal cells that were entrapped in parotid lymph nodes during embryonal life. If this is correct, and the almost total lack of recurrence and malignant transformation of this lesion lends credence to this view, Warthin's tumour is correctly classified in the group of tumour-like lesions and should not be considered to be a monomorphic adenoma.

SND of different dimensions and neck levels shows low incidence of surgical complications and acceptable functional and aesthetic results.

Regional metastasis is a prominent feature of head and neck squamous cell carcinoma (HNSCC) and is an important prognostic factor. The currently available imaging techniques for assessment of the neck have limitations in accuracy; thus, elective neck dissection has remained the usual choice of management of the clinically N0 neck (cN0) for tumors with significant (≥20%) incidence of occult regional metastasis. As a consequence, the majority of patients without regional metastasis will undergo unnecessary treatment. The purpose of this review was to discuss new developments in techniques that potentially improve the accuracy of the assessment of the neck in patients with HNSCC. Although imaging has improved in the last decades, a limitation common to all imaging techniques is a lack of sensitivity for small tumor deposits. Therefore, complementary to improvements in imaging techniques, developments in more invasive diagnostic procedures, such as sentinel node biopsy (SNB) will add to the accuracy of diagnostic algorithms for the staging of the neck.