[Lymphoplasmacytic inflammatory pseudotumor of the liver].

We present the case of a middle-aged woman with antecedents of cholecystectomy and several episodes of resi-dual coledocolitiasis resolved endoscopically. She attended Emergency Services due to a new clinical picture of abdo-minal pain and alteration of hepatic enzymes. Image tests showed lesions that suggested hepatic abscesses without ruling out a malign origin. Given this doubt it was decided to carry out a thick needle biopsy obtaining a diagnosis of an inflammatory pseudotumour of the liver related to IgG4-related disease. This is an infrequent entity but must be taken into consideration because - unlike malign pathology, which is the main differential diagnosis - its behaviour is benign, with a good evolution with medical treatment. That is why a suitable diagnosis is vital to avoid aggressive, diagnostic-therapeutic procedures.