Sentinel Lymph Node Biopsy in Oral and Oropharyngeal Squamous Cell Carcinoma: Statistical Validation and Impact of Micrometastasis Involvement on the Neck Dissection Decision.

Purpose: To evaluate the effectiveness of sentinel lymph node biopsy (SLNB) as an optimal staging method in oral and oropharyngeal squamous cell carcinoma (OOSCC) and the impact of the extent of SLN involvement on the decision for neck dissection (ND).

Materials And Methods: A prospective cohort study was performed in 96 consecutive patients with stage T1 to T4N0M0 OOSCC (mean follow-up, 62.9 months).

Synchronous unilateral parotid neoplasms. A case report.

The parotid gland is the most usual location of benign neoplasms affecting major salivary glands and quite often the recurrence of these tumours is noticed, specially in the case of pleomorphic adenoma. The occurrence of multiple tumours in the parotid glands is rare and the majority of these are multifocal Warthin's tumors (papillary cystadenoma lymphomatosum). The simultaneous development of tumours with different histological types is unusual and when it occurs, the most common combination is a pleomorphic adenoma and a Warthin's tumor.

Calcifying odontogenic cyst associated with complex odontoma: case report and review of the literature.

We report a calcifying odontogenic cyst associated with odontoma (COCaO) and an included permanent canine in the superior maxilla, in a 19 year-old-man. The calcifying odontogenic cyst (COC) was first described as a distinct entity by Gorlin et al in 1962. The lesion is a mixed odontogenic benign tumor, and although most of the cases present cystic characteristics, a few are of the solid type (15%), and its rare malignant transformation is well documented.