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Background: Liver transplantation is the main treatment for hepatocellular carcinoma (HCC). However, because of the limited supply of transplant organs, it is necessary to adopt a criterion that selects patients who will achieve adequate survival after transplantation. The aim of this review is to compare the two main staging criteria of HCC for the indication of liver transplantation (Milan and UCSF) and to analyze the posttransplantation survival rate at 1, 3 and 5 years.Methods: This is a systematic review and meta-analysis in which scientific articles from 5 databases (PubMed, Lilacs, Embase, Central, and Cinahl) were analyzed. The studies included in the review consisted of liver transplantation in patients with HCC in different subgroups according to donor type (deceased × living), population (eastern × western) and tumor evaluation (radiological × pathological) and adopted the Milan or UCSF criteria for the indication of the procedure.

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Background: Achalasia and other esophageal dysmotility disorders mimicking achalasia can be associated with cancer. This study aimed to review the main mechanisms for which cancer may develop in esophageal dysmotility disorder patients. Methods: A narrative review was performed. Results: The mechanism for developing squamous cell carcinoma and adenocarcinoma are discussed. Besides, achalasia-like syndromes related to familial KIT-gene mutation and pseudoachalasia are discussed. Conclusions: Knowing the main mechanism for which achalasia can be related to cancer is essential for clinicians to conduct the proper investigation, surveillance, and treatment.