Intrahepatic fasciolosis that simulated a cholangiocarcinoma. Report an infrequentcase

: Fasciolosis is a parasitic infection caused by 2 types of fasciola, being the most common of hepatic type, the infective form is the metacercariae. Its prevalence lies in low socio-economic zones and livestock areas. The objective is to present a case of atypical presentation in which the patient was avoided to undergo an unnecessary surgical treatment. We present a case of a 69-year-old male patient who presented Cholangitis, his sonography and tomography evidenced dilatation of the bile duct, and one was performed with endoscopic retrograde cholangiopancreatography (ERCP), showing a choledochal stenosis near the bile bifurcation And a liver fasciola larva, confocal endomicroscopy (MS) was inconclusive, biopsy of the stenosis that reported cholangiocarcinoma was reported, but since the patient had no pathological weight loss and negative tumor markers, he was given antiparasitic treatment and was performed A new ERCP that showed in the inflammatory mucosa of chronic non-tumor aspect that was confirmed with the new biopsy, the patient had a favorable evolution, thus avoiding an unnecessary treatment.