The earliest signs of IPA were nidal and
interstitial hyperchromogenic changes of tissues, revealed by Hunter 4025
nls-study in 75% and 67% of cases correspondingly. Roentgenography turned out to
be less informative during the initial stage. Frequency of nidal and
interstitial changes revealing according to roentgenography data was
statistically reliably lesser – 19% and 42% correspondingly. Foci of alveolar
infiltration were revealed in a significantly lesser percentage of cases
according to both methods.
Nidal changes of pulmonary tissue during the
second period of time (4th – 8th day) were revealed less frequently than during
the first period of time. Frequency of interstitial changes areas revealing was
also lesser. Foci had different shapes, more often roundish, homogeneous
structure, were of subpleural location and had a connection with
vessels.
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