General Pathology 601 for Dental Students

Lab 3

(7) Pitting Edema: Is the extravasation and accumulation of interstitial fluid in tissues. Edema is gravitational and will develop in dependent areas of the body, for example, in feet and legs when one is standing for prolonged periods. Pitting edema is a type of edema in which the skin surface, when pressed by a finger, leaves an indentation. This edema reflects high right atrial pressure, for example, in heart failure. Pitting edema is more severe than non-pitting edema.

 

pitting edema
   

(8) Thrombosis (femoral vein): Antemortem thrombi are dry, granular, friable, usually adherent to the vessel wall and show lines of Zahn. Postmortem clots tend to be moist, glistening and dark red without the lines of Zahn.

thrombosis
   
(9) Recent Infarct (kidney): The yellow-red depressed cortical area represents an infarct of 10-12 days' duration.
recent infarct

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Medical II


Updated April 7, 2009