In 1989 Csendes presented a new classification of the syndrome into four types: Type I is characterized by extrinsic compression of the bile duct without fistula; Type II is characterized by extrinsic compression and fistula with 33% of the gallbladder wall compromised; Type III is characterized by extrinsic compression and fistula with 33% to 66% of the gallbladder wall compromised; and Type IV is characterized by extrinsic compression and fistula with more than 66% of the gallbladder wall compromised 11. Few studies have been done about this syndrome in our country.
En 1989, Csendes presenta una nueva clasificación, la cual divide en 4 tipos: tipo I, compresión extrínseca sin fístula; tipo II, compresión más fístula con compromiso del 33 % de la pared; tipo III, compresión más fístula que compromete 33-66% de la pared y IV, compresión más fístula que compromete mas 66% de la pared 11.