[Use of 18F-FDG PET scan in the diagnosis of large liver neoplasms and in the evaluation of therapeutic effectiveness].

The study involved 207 patients with large-size tumors. Results of 18FDG PET pointed to the basic factor of malignant transformation--foci of enhanced accumulation of radiological medicinal substances. Absence of ultrasound and CT-based evidence of such pathological accumulations contributed to interpretation of changes as benign ones.

[Current possibilities of radiodiagnosis in liver tumors].

The report deals with potential of present-day techniques for radiological imaging, differential diagnosis and working out of modalities of treatment for primary and metastatic hepatic tumors. Results of complex examination (ultrasound, CT, MRI, PET using fluorine -18 FDG) of patients with benign and malignant tumors are discussed. Sensitivity and specificity of each procedure have been identified to be used in diagnosis of large-size tumors.