Experience has pointed to a rather low potential of traditional procedures of roentgenography and tomography in detecting small foci (ca. 4-5 cm in dia.). Metastases are often not seen in the shadow of the ribs, diaphragm and cardio-vascular complex. X-ray computed tomography (CT) is a method of choice for early diagnosis and further tracking tumor process in the lung. Superior spatial resolution offers complete summation-free visualization of the lung parenchyma. Provision of more data, including information on "occult" pathology in the lung, is instrumental in confirming or rejecting diagnosis of solitary tumor.
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