Mucoepidermoid microcarcinoma in the context of parotid gland cyst.

Mucoepidermoid carcinoma is a type of salivary gland cancer that can develop in the context of a parotid gland cyst. This type of tumor is composed of mucous, epidermoid, and intercalated cells, and usually presents as a slow-growing and painless mass. A parotid gland cyst is a condition in which a fluid-filled sac forms in the parotid gland.

Pleomorphic adenoma in tonsil.

Salivary tumors that involve the tonsil are rare, representing 0.5% of salivary neoplasms. Most tumors arise from the parotid glands.

Morphological Evaluation of Thyroid Cartilage Invasion in Early Glottic Tumors Involving the Anterior Commissure.

Introduction: The anterior commissure is an area of glottic cancer infiltration, even in early stages.

Objective: To evaluate the invasion by tumors into the anterior commissure cartilage in surgical specimens of frontolateral laryngectomy.

Methods: Forty-eight patients who had undergone frontolateral laryngectomy for T1b/T2 squamous cell carcinoma were included.

Statistical evaluation of a new air dispersion model against AERMOD using the Prairie Grass data set.

In this work, the authors present a statistical assessment of two atmospheric dispersion models. One of them, AERMOD (American Meteorological Society/Environmental Protection Agency Regulatory Model), adopted by the US. Environmental Protection Agency, is widely used in many countries and here is taken as a baseline to assess the performance of a newly proposed model, MODELAR (Modelo Regulatório de Qualidade do Ar).