S2640 Unveiling Pseudocirrhosis: A Review of Clinical and Diagnostic Characteristics

Introduction: Pseudocirrhosis (PC) is a morphological liver finding described in the setting of metastatic cancer that lacks diagnostic criteria. In this review, we aim to identify characteristics of patients with PC, criteria used to diagnose PC and features of those who developed evidence of portal hypertension. Methods: We queried 3 databases, PubMed, CINAHL and Embase for relevant articles using the phrases “pseudocirrhosis” OR “pseudo-cirrhosis”. We included abstracts written in English that identified cases of malignancy-associated PC. Demographics, malignancy, therapeutic agents used, liver imaging findings and defining criteria for PC were extracted. Descriptive statistics for categorical variables were reported as counts and proportions. Median and interquartile range [IQR] were calculated for continuous variables that were not normally distributed. Results: Thirty-four case reports and 7 case series met inclusion criteria which totaled 57 cases with a median age of 52.5 years [IQR 45-64]. Women comprise 80.7% of cases. Twelve primary malignancies were identified with breast cancer as the most common (n = 41, 71.8%); 87.8% of cases had evidence of portal hypertension. Forty-nine unique therapeutic agents were reported across 252 agent exposures. Radiographic and histologic evidence of PC were reported in 92.7% and 56.1% of cases respectively. Conclusion: PC is described in metastatic cancer as the radiologic appearance of cirrhosis without associated histopathologic findings. Consistent with some patterns in existing literature, we found most patients with PC had a primary breast cancer and were treated with multiple lines of chemotherapeutic agents. Notably, 87.8% of total cases showed evidence of portal hypertension or its sequelae. Of those cases of patients with PC with no evidence of portal hypertension, 42.9% of patients had a primary breast cancer and received an average of 3.28 therapeutic agents (compared to 71.8% and 4.4 agents respectively in patients who did have evidence of portal hypertension). No patients had a history of alcohol use or viral hepatitis, risk factors for cirrhosis. PC was described radiologically in 92.7% of total cases and histologically in 56.1% of total cases. Establishing diagnostic criteria and risk factors for PC and portal hypertension could lead to early diagnosis of PC, allowing for interventions to prevent or slow progression of the liver disease and improve QoL for those with a life-limiting cancer.