Oral cancer in men and women: are there differences?
In summary, compared to earlier studies, there was a higher proportion of females in (1) the group without the risk factors of tobacco and alcohol, (2) those with SCC of the hard plate and maxillary alveolus, and (3) in patients older than 70 years. There are fewer differences between metastases and recurrence rates. Further studies should be performed in female patients without risk factors and in maxillary cancer with emphasis on the human papilloma virus and infiltration rates.
The question addressed here is whether the PPTg and NbM both have a role in sustained attention. Rats bearing lesions of either structure showed deficits in the test used. However, we conclude that the most parsimonious explanation for the deficit observed in PPTg rats is inadequate response organization, rather than impairment in sustained attention. Furthermore the impairment observed in NbM lesioned rats included lever pressing difficulties in addition to impaired sustained attention. Unfortunately we could not link these deficits directly to cholinergic neuronal loss.