Adenoid Cystic Carcinoma of the Trachea: A Case Report.

BACKGROUND Adenoid cystic carcinoma of trachea (ACCT) is an unusual low-grade tumor from the tracheal and bronchial wall glands. The histological structure and biological behavior of ACCT are similar to that of tumors found in the salivary glands. ACCT occurs most commonly in the upper trachea, being found in the articular cartilage in the posterior aspect of the trachea.

Pulmonary amyloidosis: radiographic finding of nodular opacities in a heavy smoker.

Pulmonary amyloidosis is a rare disease, characterized by extracellular deposition of fibrillary protein in the lungs. Amyloidosis is a generic term for a heterogeneous group of diseases, including Alzheimer's disease and type 2 diabetes mellitus. In the respiratory system, it appears in various forms: tracheobronchial; nodular pulmonary; and alveolar septal (diffuse parenchymal).

Video-assisted thoracic sympathectomy in the treatment of primary hyperhidrosis: a retrospective study of 521 cases comparing different levels of ablation.

Objective: To compare different levels of ablation in terms of the degree of patient satisfaction and extent of postoperative reflex sweating in sympathectomized patients.

Methods: A retrospective study involving 521 patients with primary hyperhidrosis, submitted to thoracic sympathectomy at the Monte Sinai Hospital and University Hospital of the Federal University of Juiz de Fora, from January of 2001 to December 2005. All patients were submitted to thermal ablation of the sympathetic stem and were divided into three groups: up to T2 (group I, n = 162); up to T3 (group II, n = 65); and up to T4 (group III, n = 294).