Microanatomia do ângulo ponto-cerebelar com análise morfométrica do meato acústico interno / Microanatomy of the cerebellopontine angle with morphometric analysis of the internal acoustic meatus

Twelve cerebello-pontine angles of the corpses of six adults were dissected with the aid of a surgical microscope. The following parameters were analyzed: the superior-inferior (vertical) and the anterior-posterior (horizontal) dimensions of the internal acoustic meatus (IAM); and the distances from the IAM to the Meckel's cave, the superior jugular foramen (SJF) and the inferior jugular foramen (IJF). We used a mathematical formula to calculate the area of the IAM. Important variations in the IAM's measurements were found, mainly concerning its area. This study contributes to a better understanding of cerebello-pontine angle (CPA) structures and their relationships with osseous parameters in Brazilian individuals.

Segmentacao arterial esplenica em natimortos de termo. / Splenic arterial segmentation in stillbon

Os autores estudam a angioarquitetura do baco de natimortos em 50 moldes de vinilite obtidos por corrosao. Sao analisados os ramos primarios e secundarios da arteria esplenica, os ramos retos e os ramos colaterais centrais intersegmentares e perifericos. Observou-se 40% de bacos com dois segmentos, 44% com tres segmentos e 16% sem padrao segmentar definido sendo 12% por "empilhamento" e 4% por anastomoses intersegmentares. Estes achados sao discutidos quanto a possibilidade da esplenectomia parcial sob o aspecto vascular