in an attempt to substantiate the claim that pityriasis rotunda may be a useful cutaneous marker of hepatocellular carcinoma in south african blacks , the prevalence of the rash in 63 unselected south african blacks with this tumour was compared to that in 63 matched patients with active tuberculosis , 63 with other malignant tumours , and 63 with various forms of chronic benign hepatic disease .
C0027651
tumour
C0006826
malignant tumours