[Sclerosing cholangitis in the evolution of a surgical hepatic hydatid cyst].
The retrospective analysis of 3 clinical observations points out the etiopathogenetic, clinical and therapeutical aspects of the diffuse stenotic cholangitis, which can occur after the surgical treatment of the hepatic hydatid cyst. Although rare (2.9% of hydatid cysts, 13% of those which communicate with the bile ducts), the diffuse stenotic posthydatid cholangitis represents a severe postoperative complication in cases of median cysts, exerting a compression upon the convergence of hepatic ducts and communicating with the biliary tract. Its presence should be clinically suspected if a mechanical icterus with septic angiocholitis, sometimes associated with an external biliary fistula (from the residual cavity), occurs in the postoperative course of these patients, especially if the primary operation has excluded the remanance of an obstacle at the level of the main bile duct. The lesional substrate is comparable with that of the primitive sclerosing cholangitis, from which it differs through its clear relation with the primary treatment of the hepatic hydatid cyst, through the rapid course of stenotic lesions which, although diffuse, may become more marked in certain segments, as well as through the constant suprastenotic dilatation of the bile ducts. In the pathogenesis are involved the caustic action of some scolicide solutions (2 per cent formaldehyde solution, hypertonic salt solution) on the wall of the bile duct and the cystobiliary communication which predisposes to the peroperative occurrence o-a migration syndrome and of angiocholitis. It requires an early surgical reintervention in order to solve the cholestasis and angiocholitis: according to the morphological situation, we have the choice between disobstruction and trans-stenotic calibration drainage, on the one hand, and biliodigestive derivations in the hilum, which are more efficient, on the other. The prognosis is burdened with the vital risk of septic angiocholitis and with the early occurrence of a secondary biliary cirrhosis or of stenotic recurrences. Prophylaxis consists in the performance of a primary surgical treatment, adequate in median and communicating hydatid cysts, avoiding the "blind" intracystic administration of scolicide solutions, which exert a caustic action on the bile ducts.