All are true regarding mesothelioma except ?: (A) Bilaterally symmetrical, (B) Associated with asbestos exposure, (C) Histopathalogy shows biphasic pattern, (D) Occurs in late middle age
Answer is A. Mesothelioma arises from mesothelial lining of serous cavities like pleural cavity & rarely in peritoneal cavity & pericardial sac.Pleural mesothelioma is either solitary(benign) or diffuse (malignant).Malignant mesothelioma is associated with asbestos exposure and occurs in late middle age.Histologically , it has got a biphasic pattern with whorls of collagen & reticulin with interspersed fibroblasts. Reference:Textbook of pathology-Harsh Mohan-6th edition,page no:505