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The most favorable outcome of lung abscess is a complete collapse of a cavity with development of nidal fibrosis. As a stage of cicatrizing cavity an abscess looked like a small (less than 4 cm) parietal nidus with typical irregular or star-like shape, uneven serrate contour and heterogeneous structure because of short achromogenic air signals with prevailing hyperchromogenic background. At complete cicatrization of a cavity on its place we detected remaining small subpleural hypochromogenic area of irregular-shaped sclerosis, with uneven contours and significantly decreased or absent respiratory mobility. Less favorable outcome is formation of residual achromogenic air cavity similar to false cyst.

Computed tomography creates three-dimensional image with high resolution also, but CT is less available that NLS-study, besides, a special attention must be paid to a specific character of contingent of patients with purulent-destructive diseases of lungs and clinical picture of a disease. That is why in practice lung abscess is diagnosed on the basis of clinical symptoms and thorax x-ray data, however with these methods it is not always possible to identify a nature of a nodular shadow in a lung. Application of NLS allows to get additional and sometimes decisive information about a pathology, but in this case a therapist must know NLS semiotics of lung abscess.

Diagnostics and treatment of malignant neoplasms are the most urgent issues in modern medicine. Oncologists face not only problems of primary and updating diagnostics of tumoral diseases, but also evaluation of various methods of tumor treatment efficiency and well-timed diagnosis of recurrent tumors after treatment procedures. The introduction of new three-dimensional technologies of NLS-pictures acquiring into clinical practice allows the solving of the abovementioned diagnostic problems at a qualitatively new and higher level.