Is thymoma type B1 malignant?

Is thymoma type B1 malignant? We consider type A and AB thymomas (medullary and mixed thymomas) clinically benign, whereas type B1-3 thymomas (predominantly cortical and cortical thymomas and well-differentiated thymic carcinomas) are of low-grade malignant potential and most type C thymomas (category II malignant thymomas) are highly malignant. Is type Read more…

How can we protect forest from fire?

How can we protect forest from fire? Technical measures to prevent forest fires Fire fighting reservoirs. Infrastructure. Machinery and equipment. Forest Fire Monitoring. Aerial Surveillance. Mapping. Communication equipment. Emergency and deployment plans, Control of operations. What is fire structure protection? Structure Protection: Protecting a structure from the threat of damage Read more…