Attitudes of Medical Students Towards Psychiatry in Venezuela: a 6-Year Longitudinal Study.

Objective: The authors evaluated changes in attitude towards psychiatry of medical students in one medical school in Venezuela.

Methods: Balon's modified questionnaire was administered to first and sixth-year medical students to analyze their attitude towards psychiatry. The answers were compared with McNemar's test.

[Prognostic value of ERBB2 amplification and protein expression in small cell lung cancer].

Objective: Our objective was to evaluate ERBB2 oncogene amplification using fluorescence in situ hybridization (FISH) and protein overexpression using immunohistochemical techniques, and to explore their possible prognostic value in a series of patients with small cell carcinoma.

Patients And Methods: Included in the study were 99 patients with small cell tumors, classified in 2 broad groups: patients with limited locally advanced disease and patients with disseminated disease. Material for study was obtained in 97% of the cases (96/99) by means of endoscopic biopsy and by tomography-guided needle biopsy in the remaining 3% (3/99).

Micropapillary lung adenocarcinoma: a distinctive histologic subtype with prognostic significance. Case series.

The aims of the present work were to evaluate the prognostic significance of the micropapillary pattern of lung adenocarcinoma and determine whether there are differences in the behavior of this type of tumor according to its immunohistochemical profile. A series of 191 consecutively resected pulmonary adenocarcinomas were divided into those with (n = 62) and those without (n = 129) micropapillary components. The disease was stage I in 38 and 54 patients, respectively.

Large cell and small cell neuroendocrine bladder carcinoma: immunohistochemical and outcome study in a single institution.

We studied 44 cases of small cell bladder carcinoma (SCBC) and 2 cases of large cell neuroendocrine bladder carcinoma (LCNBC) to determine the immunohistochemical profile and biologic behavior. Thyroid transcription factor (TTF)-1, cytokeratin (CK)20, chromogranin A (CgA), synaptophysin, neuron-specific enolase (NSE), and Leu-7 studies were performed. TTF-1+ cases were stained for surfactant protein A (SP-A).