Patients with isolated polycystic liver disease referred to liver centres: clinical characterization of 137 cases

Background and aim: Isolated polycystic liver disease (PCLD) is characterized by the presence of multiple cysts in the liver in the absence of polycystic kidneys. The clinical profile of PCLD is poorly defined and we set up a study for the clinical characteristics of PCLD. Methods: We collected clinical data on 188 PCLD patients (defined as 410 liver cysts) from five tertiary referral centres, and 137 patients were selected for the purpose of this study. We performed molecular analysis of the PCLD associated genes PRKCSH and SEC63 in 91 patients. Results: A total of 118 (86%) patients were female. The majority of patients (88%) had 420 cysts. The median age at diagnosis was 47 years (range 23-84). 37 (41%) patients carried a mutation. Clinical symptoms at presentation were present in 111 (84%) patients. gamma-glutamyl transferase was elevated to 1.4 times upper limit of normal (interquartile range 1.0-2.7). The presence of a mutation and female gender predicted a more severe course: female patients were 9 years younger at the time of diagnosis (47 years; range 23-84) and 91% had symptoms (P