Morphological substantiation of ultrasonographic criteria of an acute cholecystitis and its paravesical complications

Abstract

Objective. To improve quality of diagnosis of paravesical complications in patients, suffering an acute cholecystitis, using demonstration of interrelationship of changes in the gallbladder wall histostructure and its echogram data. Materials and methods. Comparative analysis of the gallbladder wall echogram and results of the gallbladder wall morphological investigation was conducted in 520 patients with an acute cholecystitis to determine the kind of paravesical complications. Results. Morphological investigation of the gallbladder wall have shown that the gallbladder dimensions and the wall thickness enhancement are not universal characteristic features for an acute cholecystitis. To determine the kind of its inflammation (phlegmonous, gangrenous or catarral) is also impossible. In accordance to ultrasonographic criteria an acute cholecystitis diagnosis is established, аnd patho-morphologist determines the inflammation form. Sclerotic processes with overgrowth of dense connective tissue were revealed in the gallbladder wall while presence of a long-term inflammatory process. That's why in the patients, suffering an acute cholecystitis, the gallbladder wall echograms may show excessively white signal with delineated contours, but at the same time the gallbladder volume may be not changed or even reduced. This data may impact the choice of operative procedure. Ultrasonographic signs of presence of paravesical infiltrate and abscess were established as well. Conclusion. Echographic changes of the gallbladder wall indicates its inflammation, but do not give possibility to find which form it has. The gallbladder volume may be reduced in an acute cholecystitis, if inflammation occurs on background of recurrent process. The gallbladder wall demonstrates excessively white positive echographic signal, if in its structure connective tissue and collagen fibers prevail.

Keywords

• acute cholecystitis
• paravesical complications
• ultrasound diagnosis