A novel two-dimensional echocardiographic finding in cardiac amyloidosis.

Background: A number of echocardiographic findings characteristic of cardiac amyloidosis (CA) have been described, each with limitations.

Methods: A distinctive wall motion pattern of preserved myocardial thickening at left ventricular apex with hypokinesis in basal and midsegments was observed in two patients with biopsy proven CA. Following this observation, endomyocaradial biopsy files beginning in 2007 were reviewed.

Aortic valve commissural tear mimicking type A aortic dissection.

A 52-year-old man came to the local emergency department with symptoms of heart failure and transient chest pain. Transthoracic echocardiography showed severe aortic regurgitation and a dilated ascending aorta. Aortic dissection was suspected, and he was transferred to our institution.

The Organization of Projections from Subdivisions of the Auditory Cortex and Thalamus to the Auditory Sector of the Thalamic Reticular Nucleus in Galago.

Anterograde and retrograde transport techniques were used to study the connexions between different subdivisions of the auditory cortex and thalamus with the thalamic reticular nucleus in the prosimian, Galago. In particular, the goal was to determine whether the primary auditory nucleus, GMv, and its cortical target, area I of the auditory cortex (A I), project to a different region of the auditory sector of the reticular nucleus from the secondary auditory nuclei, GMmc and Po and their cortical targets outside A I. The results show that the projections to and from the auditory sector are indeed segregated: injections of wheatgerm agglutinin-conjugated horseradish peroxidase into either GMmc or Po labelled cells and terminals along the medial, lateral and ventral borders of the auditory sector, forming a U-shaped pattern.