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Abstract  Acute nontraumatic scrotum represents one of the most important emergencies in the male population. Etiology of the acute scrotum greatly varies, but the most common causes include testicular torsion and inflammatory disease. Currently, the most successful diagnostic imaging is ultrasound integrated by the application of color power Doppler. A very important finding is the detection of presence/absence of intratesticular blood flow for the early identification of testicular torsion. This pictorial essay aims to illustrate the various causes of acute nontraumatic scrotum by using color power Doppler ultrasound imaging, based on a retrospective analysis of 768 cases performed at our Level I trauma center between January 2005 and June 2006. [ABSTRACT FROM AUTHOR]

Abstract  Descending necrotizing mediastinitis (DNM) is a relatively rare condition caused by downward spread of neck infections into the mediastinum. This infection previously had a much worse prognosis. In recent years, prompt computer topography (CT) diagnosis has been recommended. CT scan provides the earliest means of detecting DNM for optimal management and early surgical intervention. This paper provides an illustrated summary of our extensive clinical experience with DNM, involving 36 documented cases with CT over a 5-year period. [ABSTRACT FROM AUTHOR]