Tumor folicular cístico, ístmico-catagênico proliferante em couro cabeludo ou tumor triquilemal proliferante: relato de caso / Proliferating isthmic-catagenic cystic follicular tumor in the scalp or proliferating trichilemmal tumor: a case report

Tumor triquilemal proliferante (TTP) é uma rara neoplasia que se desenvolve a partir de lesões císticas foliculares, cuja característica histológica é a presença de queratinização triquilemal. Manifestação mais comum é um nódulo solitário no couro cabeludo de mulheres idosas. Descreve-se caso de tumor triquilemal proliferante, que se apresenta como lesão tumoral cística em couro cabeludo de mulher idosa, com recidiva após remoção sem investigação diagnóstica.

Proliferating trichilemmal tumor (PTT) is a rare neoplasm that develops from cystic follicular lesions, whose histological characteristic is the presence of trichilemmal keratinization. The most common manifestation is a solitary lump on the scalp of older women. It describes a case of proliferating trichilemmal tumor, which presents as a cystic tumor lesion on the scalp of an older woman, with recurrence after removal without diagnostic investigation.

Management of occupational bloodborne exposure in a dental teaching environment.

The aims of this cross-sectional study were to investigate the prevalence of reporting occupational accidents regarding exposure to biological material among undergraduate students of dentistry at an institution of higher education and to estimate risk factors associated with underreporting. Data were collected by means of a questionnaire, which had an 86.4 percent rate of return. The sample was made up of 286 undergraduate dental students enrolled in the clinical component of the curriculum, corresponding to the final six semesters of study. The average age of the subjects was 22.4 years. Descriptive, bivariate, simple logistic regression and multiple logistic regression (Stepwise Forward Procedure) analyses were performed, with the significance level set at p< or =0.05. Of the total 167 individuals who had been exposed to biological material, 120 (71.9 percent) failed to report the accidents. The variables that were statistically associated with the nonreporting of occupational accidents were nonexposure to blood (OR=4.0; CI 95%: 1.7-10.0) and the fact that the students considered the exposure to be minor or of low risk (OR=8.8; CI 95%: 3.5-23.0) or considered the protocol adopted by the institution to be inadequate (OR=5.2; CI 95%: 1.2-17.1). The development of a procedure review policy is recommended with the aim of establishing continuous vigilance and encouraging the reporting of bloodborne exposure.