Errors and difficulties in the x-ray diagnosis of osteogenic sarcoma of the long tubular bones

In some cases radiodiagnosis of osteogenic sarcoma is associated with some difficulties resulting from a variety of its x-ray picture. The main factor that influences the x-ray manifestations of osteogenic sarcoma, is a neoplastic bone formation which reflects the morphological essence of this tumor. Other signs depend on a tumor site in one or another anatomical part of the tubular bone, on rates and type ot tumor growth. In some cases the combination of these signs ensures reliable diagnosis. However, along side with typical forms of osteogenic sarcoma there are also other ones which do not fit into the classical concept of this tumor type resulting in diagnostic difficulties and errors.     

X-ray diagnosis of echinococcosis of the bones

The paper is devoted to the authors' experience in echinococcosis of the bones in 18 patients. The most important method for the recognition of this disease is x-ray investigation.     

Computed tomography in the x-ray diagnosis of pneumonia

Experience in the use of CT in combined radiodiagnosis of pneumonia was analysed. It has been concluded that CT objectively reflects morphological inflammatory pulmonary changes and permits their all-round assessment over time. The diagnosis of pneumonia in CT is based on classical x-ray symptoms. As compared to survey radiography CT reveals symptoms of pneumonia to the full at earlier stages. CT is an important additional method of investigation of inflammatory pulmonary diseases, but it should not be used separately without survey radiography. In a majority of cases when CT is performed there is no need in x-ray tomography.