This article discusses a case of pityriasis rotunda (PR) associated with hepatocellular carcinoma (HCC) in a 67-year-old man with primary biliary cirrhosis. PR is a rare dermatosis characterized by circular, scaly patches with no inflammatory changes. It can be idiopathic or associated with underlying diseases such as malignancy or chronic infection. The article provides clinical information, including dermoscopic features and histology correlates, and mentions other comorbidities associated with PR. The diagnosis of PR is based on clinical manifestations, as histologic findings are not specific. [Extracted from the article]